Accelerator Physics in an Energy Recovery and Recirculating Linac

Although the emittances of an electron beam can be smaller in a linear accelerator than in a ring-based synchrotron radiation source, the beam power in a ring accelerator can be much larger since the high energy electrons create a large current when they are used over and over again for multiple revolutions. In order to create comparable beam powers in a linear accelerator, exorbitant electrical energy would be required, which would be consumed and dumped at the end of the accelerator.

Energy Recovery Linacs (ERLs) might resolve this dilemma between emittance and beam power. They recover energy of the spent electron beam in superconducting cavities and use it to accelerate subsequent electron bunches. Cornell plans to build a prototype facility that tests several critical accelerator physics issues before a large scale x-ray facility based on an ERL can be proposed. After successful tests, an ERL addition to the CESR accelerator at Cornell University should create an exceptional X-ray facility.

Publications

• Resonant matching section for CEBAF energy upgrade
  B. Gamage, A. Bogacz, A. Seryi, D. Turner, D. Khan, E. Nissen, G. Krafft, K. Price, K. Deitrick, R. Kazimi, R. Bodenstein, T. Satogata, Y. Roblin, A. Coxe (TJNAF), D. Trbojevic, F. Meot, J. Berg, S. Brooks (BNL), G. Hoffstaetter (CLASSE), V. Morozov (ORNL), IPAC 2024
• Current status of the FFA@CEBAF energy upgrade
  D. Khan, A. Bogacz, A. Seryi, B. Gamage, D. Turner, K. Price, K. Deitrick, R. Kazimi, R. Bodenstein, T. Satogata, Y. Roblin, A. Coxe (TJNAF), D. Trbojevic, F. Meot, J. Berg, S. Brooks (BNL), G. Hoffstaetter (CLASSE), V. Morozov (ORNL), IPAC 2024
• Permanent magnet electron energy synchrotron 2.5–18 GeV with fixed betatron tunes
  D. Trbojevic, F. Meot, J. Berg, S. Brooks (BNL), G. Hoffstaetter (CLASSE), IPAC 2024
• Single line ERL permanent magnet FFA accelerator for LHeC
  D. Trbojevic, S. Brooks, J. Berg (BNL), G. Hoffstaetter (CLASSE), A. Bogacz (TJNAF), IPAC 2024
• EUV FEL light source based on energy recovery linac with on-orbit laser plasma injection
  G. Tiwari (BNL), B. Belcher (NSU), D. Garcia (UCLA), E. Milshtein (SLAC), J. De Chant, W. Fung (MSU), P. Landon (BU), S. Tripathy (UC Davis), M. Turner (CERN), C. Rohde, J. Maslow (LANL), E. Hamwi (CLASSE), H. Lee (GIST), M. Meengs (INL), S. Kelham (NIU), A. Seryi (TJNAF), IPAC 2024
• Test of a DC-photogun Injector for the Lighthouse facility
  G. Blokesch, M. Grewe, B. Keune, J. M. Krämer, V. Kümper, C. Piel, C. Quitmann, T. Trinh (RI Research Instruments GmbH), G.H. Hoffstaetter (CLASSE), IPAC 2023
• Proton and Electron RLA FFA Optics Design
  V.S. Morozov (ORNL), J.F. Benesch, R.M. Bodenstein, S.A. Bogacz, A.M. Coxe, K.E. Deitrick, B.R. Gamage, D. Khan, G.A. Krafft, K.E. Price, Y.R. Roblin, A. Seryi (TJNAF), J.S. Berg, S.J. Brooks, F. Meot, D. Trbojevic (BNL), G.H. Hoffstaetter (CLASSE), IPAC 2023
• CEBAF 22 GeV FFA energy upgrade
  K.E. Deitrick, J.F. Benesch, R.M. Bodenstein, S.A. Bogacz, A.M. Coxe, B.R. Gamage, R. Kazimi, D.Z. Khan, G.A. Krafft, K.E. Price, Y. Roblin, A. Seryi, T. Satogata (TJNAF), J.S. Berg, S.J. Brooks, D. Trbojevic (BNL), V.S. Morozov (ORNL), G.H. Hoffstaetter (CLASSE), IPAC 2023
• Ultimate bunch length and emittance performance of an MeV ultrafast electron diffraction apparatus with a dc gun and a multicavity superconducting rf linac
  A. Bartnik, G.H. Hoffstaetter, J. Maxson (CLASSE), C.Gulliford (Xelera), PRAB 25, 093401, Sep 2022.
• Accelerator Physics Lessons from CBETA, the First Multi-Turn SRF ERL
  K.E. Deitrick (JLab), G.H. Hoffstaetter (CLASSE), NAPAC 2022
• Current Status of the FFA@CEBAF Energy Upgrade Study
  R.M. Bodenstein, J.F. Benesch, S.A. Bogacz, A. Coxe, K.E. Deitrick, B.R. Gamage, G.A. Krafft, K.E.Price. Price, Y. Roblin, A. Seryi (JLab), J.S. Berg, S.J. Brooks, D. Trbojevic (BNL), D. Douglas (Douglas Consulting), G.H. Hoffstaetter (CLASSE), V.S. Morozov (ORNL RAD), IPAC 2022
• RLAs with FFA Arcs for Protons and Electrons
  V.S. Morozov (ORNL RAD), J.F. Benesch, R.M. Bodenstein, S.A. Bogacz, A. Coxe, K.E. Deitrick, D. Douglas, B.R. Gamage, G.A. Krafft, K.E.Price. Price, Y. Roblin, A. Seryi (JLab), J.S. Berg, S.J. Brooks, F. Méot, D. Trbojevic (BNL), D. Douglas (Douglas Consulting), G.H. Hoffstaetter (CLASSE), IPAC 2022
• The Development of Energy-Recovery Linacs
  C. Adolphsen, K. Andre, D. Angla-Kalinin, M. Arnold, K. Aulenbacher, S. Benson, J. Bernauer, A. Bogacz, M. Boonekamp, R. Brinkmann, M. Bruker, O. Brüning, C. Curatolo, P. Duthill, O. Fischer, G. Hoffstaetter, B. Holzer, B. Hounsell, A. Hutton, E. Jensen, W. Kaabi, D. Kayran, M. Klein, J. Knoblock, G. Krafft, J. Kühn, B. Kuske, V. Litvinenko, F. Marhauser, B. Militsyn, S. Nagaitsev, G. Neil, A. Neumann, N. Pietralla, B. Rimmer, L. Serafini, O. A. Shevchenlo, N. Shipman, H. Spiesberger, O. Tanaka, V. Telnov, C. Tennant, C. Vaccarezza, D. Verney, N. Vinokurov, P. Williams, A. Yamamoto, K. Yokoya, F. Zimmermann, arXiv:2207.02095 [physics.acc-ph], Jul 2022.
• Transient Beam Loading in the CBETA Multi-turn ERL
  N. Banerjee (Enrico Fermi Institute, University of Chicago), G.H. Hoffstaetter (Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education), IPAC 2021
• A Hard X-Ray Compton Source at CBETA
  K.E. Deitrick, C. Franck, G.H. Hoffstaetter (Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education), J. Crone, H.L. Owen (UMAN) G.A. Krafft (JLab), G.A. Krafft, B. Terzic (ODU), B.D. Muratori, P.H. Williams (STFC/ DL/ASTeC), B.D. Muratori, P.H. Williams (Cockcroft Institute), IPAC 2021
• Technology Spinoff and Lessons Learned From the 4-Turn ERL CBETA
  K.E. Deitrick, N. Banerjee, A.C. Bartnik, D.C. Burke, J.A. Crittenden, J. Dobbins, C.M. Gulliford, G.H. Hoffstaetter, Y. Li, W. Lou, P. Quigley, D. Sagan, K.W. Smolenski (Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education), J.S. Berg, S.J. Brooks, R.L. Hulsart, G.J. Mahler, F. Méot, R.J. Michnoff, S. Peggs, T. Roser, D. Trbojevic, N. Tsoupas (BNL), T. Miyajima (KEK), IPAC 2021
• Simulation Study of the Cornell Photoinjector for Use in MeV Energy Ultra Fast Electron Diffraction
  A.C. Bartnik, C.M. Gulliford, G.H. Hoffstaetter, J.M. Maxson (Cornell University (CLASSE), Cornell Laboratory for AcceleratorBased Sciences and Education), IPAC 2021
• 20-24 GeV FFA CEBAF Energy Upgrade
  S.A. Bogacz, J.F. Benesch, R.M. Bodenstein, B.R. Gamage, G.A. Krafft, V.S. Morozov, Y. Roblin (JLab), J.S. Berg, S.J. Brooks, D. Trbojevic (BNL), D. Douglas (Douglas Consulting), G.H. Hoffstaetter (Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education), IPAC 2021
• Intense monochromatic photons above 100 keV from an inverse Compton source
  K. Deitrick, G.H. Hoffstaetter, C. Franck, B.D. Muratori, P.H. Williams. G.A. Krafft, B. Terzić, J. Crone, H. Owen, PRAB 24, 050701, May 2021
• Measurement of the per cavity energy recovery efficiency in the single turn Cornell-Brookhaven ERL Test Accelerator configuration
  C. Gulliford, N. Banerjee, A. Bartnik, J. Crittenden, K. Deitrick, J. Dobbins, G. H. Hoffstaetter, P. Quigley, K. Smolenski, J. S. Berg, R. Michnoff, S. Peggs, D. Trbojevic, PRAB 24, 010101, Jan 2021
• CBETA: First Multipass Superconducting Linear Accelerator with Energy Recovery
  A. Bartnik, N. Banerjee, D. Burke, J. Crittenden, K. Deitrick, J. Dobbins, C. Gulliford, G.H. Hoffstaetter, Y. Li, W. Lou, P. Quigley, D. Sagan, K. Smolenski, J.S. Berg, S. Brooks, R. Hulsart, G. Mahler, F. Meot, R. Michnoff, S. Peggs, T. Roser, D. Trbojevic, N. Tsoupas, T. Miyajima, Phys. Rev. Lett. 125, 044803, July 2020
• CBETA Project Report: Review of the Project and Milestones
  D. Trbojevic, G. Hoffstaetter, R. Michnoff, N. Banerjee, J. Barley, A. Bartnik, I. Bazarov, J.S. Berg, L. Borak, S. Brooks, D. Burke, J. Crittenden, J. Crone, L. Cultrera, K. Deitrick, J. Dobbins, C. Franck, R. Gallagher, C. Gulliford, B. Heltsley, R. Hulsart, J. Jones, D. Jusic, R. Kaplan, D. J. Kelliher, G. Mahler, F. Meot, V. Kostroun, B. Kuske, Y. Li, M. Liepe, W. Lou, M. McAteer, T. Miyajima, K. Ming, B. Muratori, S. Peggs, P. Quigley, J. Renta, T. Roser, D. Sabol, D. Sagan, J. Sears, C. Shore, E. Smith, K. Smolenski, C. Stoll, S. Thomas, S. Trabocchi, N. Tsoupas, J. Tuozzollo, V. Veshcherevich, J. Völker, D. Widger, H. Witte, March 2020
• Coherent synchrotron radiation wake expressions with two bending magnets and simulation results for a multiturn energy-recovery linac
  W. Lou, G. H. Hoffstaetter, PRAB 23, 054404, May 2020
• Beam breakup current limit in multiturn energy recovery linear accelerators
  W. Lou, G. H. Hoffstaetter, PRAB 22, 112801, Nov 2019
• Energy and rf cavity phase symmetry enforcement in multiturn energy recovery linac models
  R. Koscica, N. Banerjee, G. H. Hoffstaetter, W. Lou, and G. Premawardhana, PRAB 22, 091602, Sep 2019
• CBETA - Novel Superconducting ERL
  R.J. Michnoff, J.S. Berg, S.J. Brooks, J. Cintorino, Y. Hao, C. Liu, G.J. Mahler, F. Méot, S. Peggs, V. Ptitsyn, T. Roser, P. Thieberger, S. Trabocchi, D. Trbojevic, N. Tsoupas, J.E. Tuozzolo, F.J. Willeke, H. Witte, N. Banerjee, J. Barley, A.C. Bartnik, I.V. Bazarov, D.C. Burke, J.A. Crittenden, L. Cultrera, J. Dobbins, S.J. Full, F. Furuta, R.E. Gallagher, M. Ge, C.M. Gulliford, B.K. Heltsley, G.H. Hoffstaetter, D. Jusic, R.P.K. Kaplan, V.O. Kostroun, Y. Li, M. Liepe, W. Lou, J.R. Patterson, P. Quigley, D.M. Sabol, D. Sagan, J. Sears, C.H. Shore, E.N. Smith, K.W. Smolenski, V. Veshcherevich, D. Widger, D. Douglas, M. Dunham, C.E. Mayes, IPAC 2019
• Coherent Synchrotron Radiation Simulation for CBETA
  W. Lou, C.M. Gulliford, G.H. Hoffstaetter, D. Sagan, C.E. Mayes, N. Tsoupas, IPAC 2019
• CBETA Beam Commissioning Results
  C.M. Gulliford, N. Banerjee, A.C. Bartnik, I.V. Bazarov, J.A. Crittenden, K.E. Deitrick, A. Galdi, G.H. Hoffstaetter, P. Quigley, K.W. Smolenski, J.S. Berg, S.J. Brooks, R.J. Michnoff, D. Trbojevic, IPAC 2019
• RF Commissioning and Performance in the CBETA ERL
  N. Banerjee, K.E. Deitrick, J. Dobbins, G.H. Hoffstaetter, R.P.K. Kaplan, M. Liepe, C.W. Miller, P. Quigley, E.N. Smith, V. Veshcherevich, IPAC 2019
• Energy and RF Cavity Phase Symmetry Enforcement in Multi-Turn ERL Models
  R.M. Koscica, N. Banerjee, C.M. Gulliford, G.H. Hoffstaetter, W. Lou, IPAC 2019
• A Hard X-Ray Compact Compton Source at CBETA
  K.E. Deitrick, C. Franck, G.H. Hoffstaetter, V.O. Kostroun, K.W. Smolenski, J. Crone, H.L. Owen, B.D. Muratori, IPAC 2019
• Active Suppression of Microphonics Detuning in high QL Cavities
  N. Banerjee, G. Hoffstaetter, M. Liepe, P. Quigley, Z. Zhou, PRAB 22, 052002, May 2019
• Beam Commissioning Results from the CBETA Fractional Arc Test
  C. Gulliford, N. Banerjee, A. Bartnik, J. S. Berg, J. Crittenden, J. Dobbins, R. Hulsart, J. Jones, D. J. Kelliher, B. Kuske, W. Lou, M. McAteer, R. Michnoff, S. Peggs, P. Quigley, D. Sagan, K. Smolenski, V. Vesherevich, D. Widger, G. H. Hoffstaetter, D. Trbojevic, arXiv:1902.03370 Feb 2019
• Microphonics Suppression in the CBETA Linac Cryomodules
  N. Banerjee, J. Dobbins, F. Furuta, G.H. Hoffstaetter, R.P. Kaplan, M. Liepe, P. Quigley, E.N. Smith, V. Veshcherevich, IPAC 2018
• Beam-Breakup Studies for the 4-Pass Cornell-Brookhaven Energy-Recovery Linac Test Accelerator
  W. Lou, G.H. Hoffstaetter, IPAC 2018
• Start to End Simulation of the CBETA Energy Recovery Linac
  W. Lou, A.C. Bartnik, J.A. Crittenden, C.M. Gulliford, G.H. Hoffstaetter, D. Sagan, J.S. Berg, S.J. Brooks, F. Méot, D. Trbojevic, N. Tsoupas, C.E. Mayes, IPAC 2018
• The Beam Optics of the FFAG Cell of the CBETA ERL Accelerator
  W. Lou, A.C. Bartnik, J.A. Crittenden, C.M. Gulliford, G.H. Hoffstaetter, D. Sagan, J.S. Berg, S.J. Brooks, F. Méot, D. Trbojevic, N. Tsoupas, C.E. Mayes, IPAC 2018
• CBETA, the 4-turn ERL with SRF and Single Return Loop
  G.H. Hoffstaetter, N. Banerjee, J. Barley, A. Bartnik, I. . Bazarov, D.C. Burke, J.A. Crittenden, L. Cultrera, J. Dobbins, S. Full, F. Furuta, R. Gallagher, M. Ge, C. Gulliford, B. Heltsley, D. Jusic, R. Kaplan, V. Otakar Kostroun, Y. Li, M. Liepe, W. Lou, C. Mayes, J.R. Patterson, P. Quigley, D. Sabol, D. Sagan, J. Sears, C.H. Shore, E. Smith, K.W. Smolenski, V. Veshcherevich, D. Widger, J. Scott Berg, S. Brooks, C. Liu, G. Mahler, F. Meot, R. Michnoff, M. Minty, S. Peggs, V. Ptitsyn, T. Roser, P. Thieberger, D. Trbojevic, N. Tsoupas, J. Tuozzolo, F.J. Willeke, H. Witte, D. Douglas, B. Kuske, M. McAteer, J. Völker, J. Jones, D. Kelliher, IPAC 2018
• CBETA Design Report (2017) (high resolution) (low resolution)
  G.H. Hoffstaetter (PI), D. Trbojevic (PI), C. Mayes (ed.), N. Banerjee, J. Barley, I. Bazarov, A. Bartnik, J.S. Berg, S. Brooks, D. Burke, J. Crittenden, L. Cultrera, J. Dobbins, D. Douglas, B. Dunham, R. Eichhorn, S. Full, F. Furuta, C. Franck, R. Gallagher, M. Ge, C. Gulliford, B. Heltsley, D. Jusic, R. Kaplan, V. Kostroun, Y. Li, M. Liepe, C. Liu, W. Lou, G. Mahler, F. Méot, R. Michnoff, M. Minty, R. Patterson, S. Peggs, V. Ptitsyn, P. Quigley, T. Roser, D. Sabol, D. Sagan, J. Sears, C. Shore, E. Smith, K. Smolenski, P. Thieberger, S. Trabocchi, J. Tuozzolo, N. Tsoupas, V. Veshcherevich, D. Widger, G. Wang, F. Willeke, W. Xu
• CBETA - Cornell University Brookhaven National Laboratory Electron Energy Recovery Test Accelerator
  D. Trbojevic, S. Bellavia, M. Blaskiewicz, S. Brooks, K. Brown, Chuyu Liu, W. Fischer, C. Franck, Y. Hao, G. Mahler, F. Meot, R. Michnoff, M. Minty, S. Peggs, V. Ptitsyn, T. Roser, S. J. Berg, P. Thieberger, N. Tsoupas, J. Tuozzolo, F. Willeke, and H. Witte, N. Banerjee, J. Barley, A. Bartnik, I. Bazarov, D. Burke, J. Crittenden, L. Cultrera, J. Dobbins, B. Dunham, R. Eichhorn(3), S. Full, F. Furuta, R. Gallagher, M. Ge, C. Gulliford, B. Heltsley, G. Hoffstaetter, D. Jusic, R. Kaplan, V. Kostroun, Yulin Li, M. Liepe, W. Lou, C. Mayes, R. Patterson, P. Quigley, E. Smith, K. Smolenski, D. Sabol, D. Sagan, J. Sears, C. Shore, V. Veshcherevich, and D. Widger, D. Douglas, IPAC 2017
• Microphonics Studies of the CBETA Linac Cryomodules
  N. Banerjee, J. Dobbins, F. Furuta, D. Hall, G. H. Hoffstaetter, M. U. Liepe, P. Quigley, E. Smith, V. Veshcherevich, IPAC 2017
• ERL Cryomodule Testing and Beam Capabilities
  F. Furuta, N. Banerjee, J. Dobbins, R. Eichhorn, M. Ge, D. Hall, G. Hoffstaetter, M. Liepe, R. Porter, P. Quigley, D. Sabol, J. Sears, E. Smith, V. Veshcherevich, IPAC 2017
• The Beam Optics of the FFAG Cell of the CBETA ERL Accelerator
  N. Tsoupas, J. S. Berg, S. Brooks, George Mahler, F. Méot, V. Ptitsyn, D. Trbojevic, S. Tygier, IPAC 2017
• Beam-breakup Studies for the 4-pass Cornell-Brookhaven Energy-Recovery Linac Test Accelerator
  W. Lou, J.A. Crittenden and G.H. Hoffstaetter, IPAC 2017
• Thermocurrents and their role in high Q cavity performance
  R. Eichhorn, C. Daly, F. Furuta, A. Ganshyn, M. Ge, D. Gonnella, D. Hall, V. Ho, G. H. Hoffstaetter, M. Liepe, J. May-Mann, T. O’Connell, S. Posen, P. Quigley, J. Sears, and V. Veshcherevich, Phys. Rev. Accel. Beams 19, 012001
• Detection and clearing of trapped ions in the high current Cornell photoinjector
  S. Full, A. Bartnik, I. V. Bazarov, J. Dobbins, B. Dunham, and G. H. Hoffstaetter, Phys. Rev. Accel. Beams 19, 034201
• Time resolved cryogenic cooling analysis of the Cornell injector cryomodule
  R. Eichhorn, A. Bartnik, B. Dunham, M. Ge, G. Hoffstaetter, H. Lee, M. Liepe, S. Markham, T. O'Connell, P. Quigley, D. Sabol, J. Sears, E. Smith, V. Veshcherevich, IPAC 2016
• First cool-cown of the Cornell ERL Main Linac Cryo-Module
  R. Eichhorn, J. Conway, F. Furuta, M. Ge, D. Gonnella, T. Gruber, G. Hoffstaetter, J. Kaufman, T. O'Connell, P. Quigley, D. Sabol, J. Sears, E. Smith, M. Liepe, V. Veshcherevich, IPAC 2016
• HOM measurements for Cornell's high-current CW ERL cryomodule
  F. Furuta, R. G. Eichhorn, G.M. Ge, D. Gonnella, G. H. Hoffstaetter, M. Liepe, P. Quigley, V. Veshcherevich, IPAC 2016
• ERL Main Linac Cryomodule cavity performance and effect of thermal cycling
  F. Furuta, J. Dobbins, R. G. Eichhorn, Mingqi Ge, D. Gonnella, G. H. Hoffstaetter, M. Liepe, T. O'Connell, P. Quigley, D. Sabol, J. Sears, E. Smith, V. Veshcherevich, IPAC 2016
• Trapped ion effects and mitigation during high current operation in the Cornell DC photoinjector
  S. Full, A. Bartnik, I.V. Bazarov, J. Dobbins, B. Dunham, G.H. Hoffstaetter, IPAC 2016
• CBETA: The Cornell/BNL 4-turn ERL with FFAG return arcs for eRHIC prototyping
  G. H. Hoffstaetter, J. Barley, A. Bartnik, I. V. Bazarov, J. Dobbins, B. Dunham, R. G. Eichhorn, R. Gallagher, C. Gulliford, Y. Li, M. Liepe, W. Lou, C. E. Mayes, J. R. Patterson, D. Sabol, E. Smith, K. Smolenski, I. Ben-Zvi, J. S. Berg, S. Brooks, G. Mahler, F. Meot, M. Minty, S. Peggs, V. Ptitsyn, T. Roser, D. Trbojevic, N. Tsoupas, J. Tuozzolo, H. Witte, D. Douglas, LINAC 2016
• Ion effects in high brightness electron Linac beams
  S. Full, A. Bartnik, I.V. Bazarov, J. Dobbins, B. Dunham, G.H. Hoffstaetter, K. Smith, LINAC 2016
• Measurements and analysis of cavity microphonics and frequency control in the Cornell ERL Main Linac prototype cryomodule
  M. Ge, N. Banerjee, J. Dobbins, R. Eichhorn, F. Furuta, G. Hoffstaetter, M. Liepe, P. Quigley, J. Sears, V. Veshcherevich, LINAC 2016
• Performance of the novel Cornell ERL main Linac prototype cryomodule
  F. Furuta, J. Dobbins, R. Eichhorn, M. Ge, D. Gonnella, G. Hoffstaetter, M. Liepe, T. O'Connell, P. Quigley, D. Sabol, J. Sears, E. Smith, V. Veshcherevich, LINAC 2016
• HOM measurements for Cornell's ERL main Linac cryomodule
  F. Furuta, R. Eichhorn, M. Ge, D. Gonnella, G. Hoffstaetter, M. Liepe, P. Quigley, V. Veshcherevich, LINAC 2016
• Cool-down performance of the Cornell ERL cryomodules
  R. Eichhorn, M. Ge, F. Furuta, G.H. Hoffstaetter, M. Liepe, S. Markham, T. O'Connell, P. Quigley, D. Sabol, J. Sears, E. Smith, V. Veshcherevich, D. Widger, LINAC 2016
• Energy Recovery Linac Development
  G.H. Hoffstaetter, APS Division of Physics of Beams Newsletter 2015
• The Cornell-BNL FFAG-ERL Test Accelerator: White Paper
  I. Bazarov, J. Dobbins, B. Dunham, G. Hoffstaetter, C. Mayes, R. Patterson, D. Sagan, I. Ben-Zvi, S. Berg, M. Blaskiewicz, S. Brooks, K. Brown, W. Fischer, Y. Hao, W. Meng, F. Méot, M. Minty, S. Peggs, V. Ptitsin, T. Roser, P. Thieberger, D. Trbojevic, N. Tsoupas, arXiv:1504.00588 (2015)
• Nitrogen-Doped 9-Cell Cavity Performance in a Test Cryomodule for LCLS-II
  D. Gonnella, R. Eichhorn, F. Furuta, M. Ge, D. Hall, V. Ho, G. Hoffstaetter, M. Liepe, T. O'Connell, S. Posen, P. Quigley, J. Sears, V. Veshcherevich, A. Grassellino, A. Romanenko, D. Sergatskov, arXiv:1411.1659 (2014)
• Analytical relationships between elliptic cavity shape and fields
  V. Shemelin, G. Hoffstaetter, Phys. Rev. Special topics - Accelerators and Beams 17, 102001 (2014), p. 1-7
• Cornell's Main Linac Cryomodule for the Energy Recovery Linac Project
  R.G. Eichhorn, B. Bullock, J.V. Conway, B. Elmore, F. Furuta, Y. He, G.H. Hoffstaetter, J.J. Kaufman, M. Liepe, T.I. O'Connel, P. Quigley, D.M. Sabol, J. Sears, E.N. Smith, V. Veshcherevich, Proceedings of IPAC 2014, Dresden, Germany
• The Joint High Q0 R&D Program for LCLS-II
  M. Liepe, R.G. Eichhorn, F. Furuta, G.M. Ge, D. Gonnella, G.H. Hoffstaetter, Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA; A.C. Crawford, A. Grassellino, A. Hocker, O.S. Melnychuk, A. Romanenko, A.M. Rowe, D.A. Sergatskov, Fermilab, Batavia, Illinois, USA; R.L. Geng, A.D. Palczewski, C.E. Reece, JLAB, Newport News, Virginia, USA; M.C. Ross, SLAC, Menlo Park, California, USA, Proceedings of IPAC 2014, Dresden, Germany
• Beam-based HOM Measurements in Cornell's ERL Main Linac Cavity
  D.L. Hall, A.C. Bartnik, M.G. Billing, D. Gonnella, G.H. Hoffstaetter, M. Liepe, C.E. Mayes, Proceedings of IPAC 2014, Dresden, Germany
• Ion Effects in the Cornell ERL High Intensity Photoinjector
  S.J. Full, A.C. Bartnik, I.V. Bazarov, J. Dobbins, B.M. Dunham, G.H. Hoffstaetter, Proceedings of IPAC 2014, Dresden, Germany
• Science with an Energy Recovery Linac
  D.H Bilderback, J.D. Brock, E. Fontes, G.H. Hoffstaetter, June 2013
• Use of quartz tuning forks for sensitive, in-situ measurements of helium properties during SRF cavity tests
  A. N. Ganshin, X. Mi, E. N. Smith and G. H. Hoffstaetter, JINST 8 P04007 
• Multipactor in crossed rf fields on the cavity equator
  Valery Shemelin, Phys. Rev. Special topics Accelerators and Beams 16, 012002 (2013), p. 1-11
• Improving Emmitances in Existing Storage Rings by Defocusing Dipoles
  C.E. Mayes, L. Gupta, G.H. Hoffstaetter, V.O. Kostroun, A.A. Mikhailichenko, IPAC 2013, Shanghai, China, May 2013
• Cornell's HOM Beamline Absorbers
  R. Eichhorn, J.V. Conway, Y. He, G.H.Hoffstaetter, M.Liepe, T.I. O'Connell, P. Quigley, J. Sears, V.D. Shemelin, N.R.A. Valles, IPAC 2013, Shanghai, China, May 2013
• CW Linac Cryo-module for Cornell’s ERL
  R. Eichhorn, Y. He, G.H. Hoffstaetter, M. Liepe, T.I. O'Connell, P. Quigley, D.M. Sabol, J. Sears, E.N. Smith, V. Veshcherevich, CLASSE, Ithaca, New York, USA, IPAC 2013, Shanghai, China, May 2013
• Readiness for the Cornell ERL
  G.H. Hoffstaetter, A.C. Bartnik, I.V. Bazarov, D.H. Bilderback, M.G. Billing, J.D. Brock, J.A. Crittenden, L. Cultrera, D.S. Dale, J. Dobbins, B.M. Dunham, R.D. Ehrlich, M. P. Ehrlichman, R. Eichhorn, K. Finkelstein, E. Fontes, M.J. Forster, S.J. Full, F. Furuta, D. Gonnella, S.W. Gray, S.M. Gruner, C.M. Gulliford, D.L. Hartill, Y. He, R.G. Helmke, K.M.V. Ho, R.P.K. Kaplan, S.S. Karkare, V.O. Kostroun, H. Lee, Y. Li, M. Liepe, X. Liu, J.M. Maxson, C.E. Mayes, A.A. Mikhailichenko, H. Padamsee, J.R. Patterson, S.B. Peck, S. Posen, P. Quigley, P. Revesz, D.H. Rice, D. Sagan, J. Sears, V.D. Shemelin, D.M. Smilgies, E.N. Smith, K.W. Smolenski, A.B. Temnykh, M. Tigner, N.R.A. Valles, V. Veshcherevich, A.R. Woll, Y. Xie, Z. Zhao CLASSE, Ithaca, New York, USA, IPAC 2013, Shanghai, China, May 2013
• Cornell ERL Main Linac 7-cell Cavity Performance in Horizontal Test Cryomodule Qualifications
  N.R.A. Valles, R. Eichhorn, F. Furuta, G.M. Ge, D. Gonnella, Y. He, K.M.V. Ho, G.H. Hoffstaetter, M. Liepe, T.I. O'Connell, S. Posen, P. Quigley, J. Sears, V. Veshcherevich, CLASSE, Ithaca, New York, USA, IPAC 2013, Shanghai, China, May 2013
• HOM Studies of the Cornell ERL Main Linac Cavity: HTC-1 Through HTC-3
  N.R.A. Valles, R. Eichhorn, G.H. Hoffstaetter, M. Liepe, CLASSE, Ithaca, New York, USA, IPAC 2013, Shanghai, China, May 2013
• Quench and High Field Q-SLOP Studies using a Single Cell Cavity with Artificial Pits
  Y. Xie, G.H. Hoffstaetter, M. Liepe, CLASSE, Ithaca, New York, USA, IPAC 2013, Shanghai, China, May 2013
• Science with an Energy Recovery Linac (ERL)
  H. Abruna, N. Ashcroft, W. Bassett, I. Bazarov, D. Bilderback, J.D. Brock, B. Crane, D. Dale, K. Finkelstein, E. Fontes, R. E. Gillilan, S.M. Gruner, R. Hoffmann, G.H. Hoffstaetter, C.U. Kim, K. Lancaster, D. Muller, J.R. Patterson, M. Pfeifer, L. Pollack, J. Ruff, M. Tigner, D. Schuller, D.M. Smilgies, Z. Wang, A. Woll, et al. , eds. D.H. Bilderback, J.D. Brock, E. Fontes, G.H. Hoffstaetter (2013)
• Cornell Energy Recovery Linac: Science Case and Project Definition Design Report
  A. Bartnik, I. V. Bazarov, D. H. Bilderback, M. G. Billing, J. D. Brock, J. A. Crittenden, L. Cultrera, D. Dale, J. A. Dobbins, B. M. Dunham, R. D. Ehrlich, M. P. Ehrlichman, R. Eichhorn, K. D. Finkelstein, E. Fontes, M. J. Forster, S. Full, F. Furuta, D. Gonnella, S. W. Gray, S. M. Gruner, C. Gulliford, D. L. Hartill, Y. He, R. G. Helmke, V. Ho, R. P. Kaplan, S. S. Karkare, V. O. Kostroun, H. A. Lee, Y. Li, X. Liu, M. U. Liepe, C. E. Mayes, J. M. Maxson, A. A. Mikhailichenko, H. S. Padamsee, R. Patterson, S. B. Peck, S. E. Posen, P. G. Quigley, P. Revesz, D. H. Rice, D. C. Sagan, J. O. Sears, V. D. Shemelin, D. M. Smilgies, E. N. Smith, K. W. Smolenski, A. B. Temnykh, M. Tigner, N.R.A. Valles, V. G. Veshcherevich, A. R. Woll, Y. Xie, Z. Zhao, eds. G.H. Hoffstaetter, S.M. Gruner, M. Tigner (2013)
• First-Principle Approach for Optimization of Cavity Shape for High Gradient and Low Loss
  V.D. Shemelin, G.H. Hoffstaetter, IPAC 2012, New Orleans, Louisiana, USA, May 2012.
• Completed Assembly of the Daresbury International ERL Cryomodule and its Implementation on ALIC
  P.A. McIntosh, M.A. Cordwell, P.A. Corlett, P. Davies, E. Frangleton, P. Goudket, K.J. Middleman, S.M. Pattalwar, A.E. Wheelhouse, STFC/DL/ASTeC, Daresbury, Warrington, Cheshire, United Kingdom, S.A. Belomestnykh BNL, Upton, Long Island, New York, USA, Buchner, F.G. Gabriel, P. Michel, HZDR, Dresden, Germany, J.N. Corlett, D. Li, S.M. Lidia, LBNL, Berkeley, California, USA, G.H. Hoffstaetter, M. Liepe, H. Padamsee, P. Quigley, J. Sears, V.D. Shemelin, V. Veshcherevich, CLASSE, Ithaca, New York, USA, T.J. Jones, J. Strachan, STFC/DL, Daresbury, Warrington, Cheshire, United Kingdom, R.E. Laxdal, TRIUMF, Vancouver, Canada, D. Proch, J.K. Sekutowicz, DESY, Hamburg, Germany, T.I. Smith, Stanford University, Stanford, California, USA, IPAC 2012, New Orleans, Louisiana, USA, May 2012
• Performance of the Cornell High-Brightness, High-Power Electron Injector
  B.M. Dunham, A.C. Bartnik, I.V. Bazarov, L. Cultrera, J. Dobbins, C.M. Gulliford, G.H. Hoffstaetter, R.P.K. Kaplan, V.O. Kostroun, Y. Li, M. Liepe, X. Liu, F. Lohl, P. Quigley, D.H. Rice, E.N. Smith, K.W. Smolenski, M. Tigner, V. Veshcherevich, Z. Zhao, CLASSE, Ithaca, New York, USA, S.S. Karkare, H. Li, J.M. Maxson, Cornell University, Ithaca, New York, USA, IPAC 2012, New Orleans, Louisiana, USA, May 2012
• Cryogenic Distribution System for the Proposed Cornell ERL Main Linac
  E.N. Smith, Cornell University, Ithaca, New York, USA, Y. He, G.H. Hoffstaetter, M. Liepe, M. Tigner, CLASSE, Ithaca, New York, USA, IPAC 2012, New Orleans, Louisiana, USA, May 2012
• Multi-cell VEP Results: High Voltage, High Q, and Localized Temperature Analysis
  F. Furuta, B. Elmore, Cornell University, Ithaca, New York, USA, A.C. Crawford, Fermilab, Batavia, USA, G.M. Ge, G.H. Hoffstaetter, M. Liepe, CLASSE, Ithaca, New York, USA, IPAC 2012, New Orleans, Louisiana, USA, May 2012
• Accelerator R&D: Research for Science - Science for Society
  N.R. Holtkamp, SLAC, Menlo Park, California, USA, S. Biedron, S.V. Milton, CSU, Fort Collins, Colorado, USA, L. Boeh, J.E. Clayton, G. Zdasiuk, VMS GTC, Palo Alto, California, USA, S.A. Gourlay, M.S. Zisman, LBNL, Berkeley, California, USA, R.W. Hamm, R&M Technical Enterprises, Pleasanton, California, USA, S. Henderson, Fermilab, Batavia, USA, G.H. Hoffstaetter, CLASSE, Ithaca, New York, USA, L. Merminga, TRIUMF, Vancouver, Canada, S. Ozaki, BNL, Upton, Long Island, New York, USA, F.C. Pilat, JLAB, Newport News, Virginia, USA, M. White, ANL, Argonne, USA, IPAC 2012, New Orleans, Louisiana, USA, May 2012
• Construction, Evaluation, and Application of a Temperature Map for Multi-cell SRF Cavity
  G.M. Ge, F. Furuta, D.L. Hartill, K.M.V. Ho, G.H. Hoffstaetter, E.N. Smith, CLASSE, Ithaca, New York, USA, IPAC 2012, New Orleans, Louisiana, USA, May 2012
• High Current Operation of the Cornell ERL Superconducting RF Injector Cryomodule
  M. Liepe, G.H. Hoffstaetter, S. Posen, P. Quigley, V. Veshcherevich, CLASSE, Ithaca, New York, USA, IPAC 2012, New Orleans, Louisiana, USA, May 2012
• Progress on Superconducting RF Work for the Cornell ERL
  M. Liepe, F. Furuta, G.M. Ge, Y. He, G.H. Hoffstaetter, T.I. O'Connell, S. Posen, J. Sears, M. Tigner, N.R.A. Valles, V. Veshcherevich, CLASSE, Ithaca, New York, USA, IPAC 2012, New Orleans, Louisiana, USA, May 2012
• HOM Studies on the Cornell ERL Prototype Cavity in a Horizontal Test Cryomodule
  N.R.A. Valles, M.G. Billing, G.H. Hoffstaetter, M. Liepe, C.E. Mayes, CLASSE, Ithaca, New York, USA, IPAC 2012, New Orleans, Louisiana, USA, May 2012
• Testing of the Main-Linac Prototype Cavity in a Horizontal Test Cryomodule for the Cornell ERL
  N.R.A. Valles, F. Furuta, G.M. Ge, Y. He, K.M.V. Ho, G.H. Hoffstaetter, M. Liepe, T.I. O'Connell, S. Posen, P. Quigley, J. Sears, M. Tigner, V. Veshcherevich, CLASSE, Ithaca, New York, USA, IPAC 2012, New Orleans, Louisiana, USA, May 2012
• Recent Developments in the Cornell Nb3Sn Initiative
  S. Posen, G.H. Hoffstaetter, M. Liepe, Y. Xie, CLASSE, Ithaca, New York, USA, IPAC 2012, New Orleans, Louisiana, USA, May 2012
• Residual Resistance Studies at Cornell
  S. Posen, D. Gonnella, G.H. Hoffstaetter, M. Liepe, CLASSE, Ithaca, New York, USA, J. Oh, Cornell University, Ithaca, New York, USA, IPAC 2012, New Orleans, Louisiana, USA, May 2012
• Computed Wake Field Effects from Measured Surface Roughness in the Walls of the Cornell ERL
  M.G. Billing, G.H. Hoffstaetter, C.E. Mayes, K.W. Smolenski, H.A. Williams, CLASSE, Ithaca, New York, USA, IPAC 2012, New Orleans, Louisiana, USA, May 2012
• Self Excited Operation for a 1.3 GHz 5-cell Superconducting Cavity
  K. Fong, M.P. Laverty, Q. Zheng, TRIUMF, Vancouver, Canada; E.P. Chojnacki, G.H. Hoffstaetter, D. Meidlinger, S.P. Wang, CLASSE, Ithaca, New York, USA, Proceedings of 2011 Particle Accelerator Conference, New York, NY, USA
• Cornell ERL Research and Development
  C.E. Mayes, I.V. Bazarov, S.A. Belomestnykh, D.H. Bilderback, M.G. Billing, J.D. Brock, E.P. Chojnacki, J.A. Crittenden, L. Cultrera, J. Dobbins, B.M. Dunham, R.D. Ehrlich, M. P. Ehrlichman, E. Fontes, C.M. Gulliford, D.L. Hartill, G.H. Hoffstaetter, V.O. Kostroun, F.A. Laham, Y. Li, M. Liepe, X. Liu, F. Lohl, A. Meseck, A.A. Mikhailichenko, H. Padamsee, S. Posen, P. Quigley, P. Revesz, D.H. Rice, D. Sagan, V.D. Shemelin, E.N. Smith, K.W. Smolenski, A.B. Temnykh, M. Tigner, N.R.A. Valles, V. Veshcherevich, Y. Xie, CLASSE, Ithaca, New York, USA; S.S. Karkare, J.M. Maxson, Cornell University, Ithaca, New York, USA, Proceedings of 2011 Particle Accelerator Conference, New York, NY, USA
• Beam Pipe HOM Absorber for SRF Cavities
  R. Sah, A. Dudas, M.L. Neubauer, Muons, Inc, Batavia, USA; G.H. Hoffstaetter, M. Liepe, H. Padamsee, V.D. Shemelin, CLASSE, Ithaca, New York, USA; K. Ko, C. Ng, L. Xiao SLAC, Menlo Park, California, USA, Proceedings of 2011 Particle Accelerator Conference, New York, NY, USA
• FELs as X-ray Sources in ERL Facilities
  A. Meseck, HZB, Berlin, Germany; G.H. Hoffstaetter, F. Lohl, C.E. Mayes, CLASSE, Ithaca, New York, USA, Proceedings of 2011 Particle Accelerator Conference, New York, NY, USA
• Progress on Superconducting RF for the Cornell Energy-Recovery-Linac
  M. Liepe, G.H. Hoffstaetter, S. Posen, J. Sears, V.D. Shemelin, M. Tigner, N.R.A. Valles, V. Veshcherevich, Proceedings of 2011 Particle Accelerator Conference, New York, NY, USA
• Experience with the Cornell ERL Injector SRF Cryomodule during High Beam Current Operation
  M. Liepe, D.L. Hartill, G.H. Hoffstaetter, S. Posen, P. Quigley, V. Veshcherevich, Proceedings of IPAC 2011, San Sebastián, Spain
• Dark Current Simulations for the Cornell ERL
  C.E. Mayes, C.S. Chiu, G.H. Hoffstaetter, V.O. Kostroun, D. Sagan, CLASSE, Ithaca, New York, USA; L.M. Nash, North Carolina University, Chapel Hill, North Carolina, USA, Proceedings of IPAC 2011, San Sebastián, Spain
• Unified Accelerator Modeling Using the Bmad Software Library
  D. Sagan, I.V. Bazarov, J.Y. Chee, J.A. Crittenden, G. Dugan, K. Finkelstein, G.H. Hoffstaetter, C.E. Mayes, S. Milashuk, D. L. Rubin, J.P. Shanks, CLASSE, Ithaca, New York, USA; R. Cope, CSU, Fort Collins, Colorado, USA, Proceedings of IPAC 2011, San Sebastián, Spain
• Superconducting RF for the Cornell Energy-Recovery Linac Main Linac
  Matthias Liepe, Yun He, Georg H. Hoffstaetter, Sam Posen, James Sears, Valery D. Shemelin, Maury Tigner, Nicholas Ruben Alexander Valles, Vadim Veshcherevich, Proceedings of SRF 2011, Chicago, IL, USA
• Influence of Foreign Particles on the Quality Factor of a Superconducting Cavity
  Valery D. Shemelin, Georg H. Hoffstaetter, Proceedings of SRF 2011, Chicago, IL, USA
• Latest Results and Test Plans from the 100 mA Cornell ERL Injector SCRF Cryomodule
  M. Liepe, S.A. Belomestnykh, E.P. Chojnacki, Z.A. Conway, G.H. Hoffstaetter, R.P.K. Kaplan, S.E. Posen, P. Quigley, J. Sears, V.D. Shemelin, V. Veshcherevich, Proceedings of IPAC 2010, Kyoto, Japan
• Beam Pipe HOM Absorber for 750 MHz RF Cavities
  M.L. Neubauer, A. Dudas, R. Sah Muons, Inc, Batavia; G.H. Hoffstaetter, M. Liepe, H. Padamsee, V. Shemelin, CLASSE, Ithaca, New York, Proceedings of IPAC 2010, Kyoto, Japan
• Coherent Synchrotron Radiation Simulation for the Cornell Energy Recovery Linac
  C. E. Mayes, G. H. Hoffstaetter, Proceedings of IPAC 2010, Kyoto, Japan
• Cornell Energy Recovery Linac Lattice and Layout
  C. E. Mayes, G. H. Hoffstaetter, Proceedings of IPAC 2010, Kyoto, Japan
• An Extension of Cornell's Energy Recovery Linac for Compressed High-Charge Bunches
  F. A. Laham, Cornell University, Ithaca, New York; C. E. Mayes, G. H. Hoffstaetter, Classe, Ithaca, New York, Proceedings of IPAC 2010, Kyoto, Japan
• The Cornell Energy Recovery Linac: update on a future source of coherent hard x-rays
  Don Bilderback, Bruce Dunham, Georg Hoffstaetter, Alexander Temnykh, Sol Gruner, CHESS News Magazine (2009)
• ILC testing program at Cornell University
  Z.A. Conway, E.P. Chojnacki, D.L. Hartill, G.H. Hoffstaetter, M.U. Liepe, H.S. Padamsee, A.S. Romanenko, J.O. Sears, Proceedings of SRF09, Berlin/FRG (2009)
• Assembly preparations for the international ERL cryomodule at Daresbury laboratory
  P. A. McIntosh, R. Bate, C. D. Beard, M. A. Cordwell, D. M. Dykes, S. M. Pattalwar and J. Strachan, S. Belomestnykh, Z. Conway, G. Hoffstaetter, M. Liepe, H. Padamsee, P. Quigley, J. Sears, V. Shemelin and V. Veshcherevich, D. Proch and J. Sekutowicz, A. Baechner, F. Gabriel and P. Michel, J. N. Corlett, D. Li and S. Lidia, T. Kimura and T. I. Smith, Proceedings of SRF09, Berlin/FRG (2009)
• The Cornell Energy Recovery Linac: update on a future source of coherent hard x-rays
  D. Bilderback, B. Dunham, G.H. Hoffstaetter, A. Temnykh, S. Gruner, Synchrotron Radiation News (2009)
• Developments for Cornell's x-ray ERL
  J.A. Crittenden, I.V. Bazarov, S.A. Belomestnykh, D.H. Bilderback, M.G. Billing, J.D. Brock, E.P. Chojnacki, B.M. Dunham, M.P. Ehrlichman, M.J. Forster, S.M. Gruner, G.H. Hoffstaetter, C.J. Johnstone, Y.Li, M.U. Liepe, C.E. Mayes, A.A. Mikhailichenko, H.S. Padamsee, S.B. Peck, D.C. Sagan, V.D. Shemelin, A. Temnykh, M. Tigner, V. Veshcherevich, Proceedings of PAC09, Vancouver/CA (2009)
• Collimating Touschek particles in an Energy Recovery Linear accelerator
  M.P. Ehrlichman, G.H. Hoffstaetter, Proceedings of PAC09, Vancouver/CA (2009)
• Exact CSR Wakes for the 1-D Model
  C.E. Mayes, G.H. Hoffstaetter, Proceedings of PAC09, Vancouver/CA (2009)
• Initial beam results from the Cornell high-current ERL injector prototype
  I. Bazarov, S. Belomestnykh, E. Chojnacki, J. Dobbins, B. Dunham, R. Ehrlich, M. Forster, C.I. Gulliford, G. Hoffstaetter, H. Li, Y. Li, M. Liepe, X. Liu, F. Loehl, D. Ouzounov, H. Padamsee, D. Gulliford, D. Rice, V. Shemelin, E. Smith, K. Smolenski, M. Tigner, V. Veshcherevich, Proceedings of PAC09, Vancouver/CA (2009)
• Design of an ERL linac cryomodule
  E. Chojnacki, S. Belomestnykh, S. Chapman, R. Ehrlich, G. Hoffstaetter, M. Liepe, H. Padamsee, J. Sears, E. Smith, V. Veshcherevich, Proceedings of PAC09, Vancouver/CA (2009)
• Extended 1D method for Coherent Synchrotron Radiation including Shielding
  D.C. Sagan, G.H. Hoffstaetter, C.E. Mayes, U. Sae-Ueng, Physical Review ST-AB 12, 040703 (2009)
• Exact 1D model for coherent synchrotron radiation with shielding and bunch compression
  C.E. Mayes, G.H. Hoffstaetter Physical Review ST-AB 12, 024401 (2009)
• Wake-field compensation in Energy Recovery Linacs
  G.H. Hoffstaetter, M.G. Billing, Y.H. Lau, Proceedings of EPAC08, Genoa/IT (2008)
• Intra Beam Scattering in Linear Accelerators, especially ERLs
  G.H. Hoffstaetter, M.P. Ehrlichman, A.B. Temnykh Proceedings of EPAC08, Genoa/IT (2008)
• CSR including Shielding in the Beam Dynamics code Bmad
  David C. Sagan, G.H. Hoffstaetter, C.E. Mayes, U. Sae-Ueng, Proceedings of EPAC08, Genoa/IT (2008)
• Challenges for Beams in an ERL Extension to CESR
  G.H. Hoffstaetter, I.V. Bazarov, D.H. Bilderback, M.G. Billing, G.W. Codner, J.A. Crittenden, B.M. Dunham, M.P. Ehrlichman, K.D. Finkelstein, M.J. Forster, S. Greenwald, S.M. Gruner, V.O. Kostroun, Y. Li, M.U. Liepe, C.E. Mayes, S.B. Peck, D.C. Sagan, Ch. Spethmann, A.B. Temnykh, M. Tigner, Y. Xie, Proceedings of EPAC08, Genoa/IT (2008)
• Beam losses due to intra-beam and residual gas scattering for Corenll's Energy Recovery Linac
  A.B. Temnykh, M.P. Ehrlichman, G.H. Hoffstaetter, Proceedings of EPAC08, Genoa/IT (2008)
• Compensation of wakefield-driven energy spread in Energy Recovery Linacs
  G.H. Hoffstaetter, Y.H. Lau, Physical Review ST-AB 11, 070701 (2008)
• Equilibrium ion distribution in the presence of clearing electrodes and its influence on electron dynamics
  G.H. Hoffstaetter, C. Spethmann, Physical Review ST-AB 11, 014001 (2008)
• Particle Orbit Correction in an Energy Recovery Linac
  C. Song, G. Hoffstaetter, Cornell-Report-ERL-07-04 (2007)
• Beam breakup simulations for the Cornell x-ray ERL
  C. Song, G. Hoffstaetter, Proceedings of PAC07, Albuquerque/NM (2007)
• Controlling coupler-kick emittance growth in the Cornell ERL main linac
  G.H. Hoffstaetter, B. Buckley, Proceedings of PAC07, Albuquerque/NM (2007)
• Equilibrium ion distribution in the presence of clearing electrodes and its influence on electron dynamics
  G.H. Hoffstaetter, C. Spethmann, Proceedings of PAC07, Albuquerque/NM (2007)
• Progress toward an ERL Extension to CESR
  G.H. Hoffstaetter, I.V. Bazarov, D.H. Bilderback, J. Codner, B. Dunham, D. Dale, K. Finkelstein, M. Forster, S. Greenwald, S.M. Gruner, Y. Li, M. Liepe, C. Mayes, D. Sagan, C.K. Sinclair, C. Song, A. Temnykh, M. Tigner, Y. Xie, Proceedings of PAC07, Albuquerque/NM (2007)
• Method of perturbative-PIC simulation for interactions between a particle bunch and its coherent synchrotron radiation
  J. Shi, G.H. Hoffstaetter, Proceedings of PAC07, Albuquerque/NM (2007)
• Transverse Emittance Dilution due to Coupler Kicks in Linear Accelerators
  B. Buckley, G.H. Hoffstaetter, Physical Review ST-AB 10, 111002 (2007)
• Recirculating beam-breakup thresholds for polarized higher-order modes with optical coupling
  G.H. Hoffstaetter, I.V. Bazarov, C. Song, Physical Review ST-AB 10, 044401 (2007)
• Transverse Quadrupole BBU Threshold Current in the Cornell X-ray ERL
  C. Song, G.H. Hoffstaetter, Report Cornell-ERL-07-10 (2007)
• Magnetic Field Error Sensitivity in an Energy Recovery Linac
  C. Song, G.H. Hoffstaetter, Report Cornell-ERL-07-03 (2007)
• Energy Recovery Linac - The future gets brighter
  G.H. Hoffstaetter, Connecting with Cornell, Office of the Vice Provost for Research, Cornell University (Fall 2006)
• Longitudinal BBU Threshold Current in Recirculating Linacs
  C. Song, G.H. Hoffstaetter, Report Cornell-ERL-06-04 (2006)
• Experimental investigation of multibunch, multipass beam breakup in the Jefferson Laboratory Free Electron Laser Upgrade Driver
  D.R. Douglas, K.C. Jordan, L. Merminga, E.G. Pozdeyev, C.D. Tennant, H. Wang, T.I. Smith, S. Simrock, I.V. Bazarov, G.H. Hoffstaetter, Physical Review ST-AB 9, 064403 (2006)
• Emittance Dilution due to Transverse Coupler Kicks in the Cornell ERL
  B. Buckley, J. Choi, G.H. Hoffstaetter, Report Cornell-ERL-06-02 (2006)
• Transverse Recirculating-BBU Threshold Current in the Cornell x-ray ERL
  C. Song, G.H. Hoffstaetter, Report Cornell-ERL-06-01 (2006)
• Ion clearing in an ERL
  G.H. Hoffstaetter, M.U. Liepe, Nuclear Instruments and Methods in Physics Research A 557, 205-212 (2006)
• Optics and Beam Transport in Energy Recovery Linacs
  G.H. Hoffstaetter, V. Litvinenko, H. Owen, Nuclear Instruments and Methods in Physics Research A 557, 345-353 (2006)
• Optics issues in ongoing ERL projects
  S. Smith, B.D. Muratori, H.I. Owen, G.H. Hoffstaetter et al., Nuclear Instruments and Methods in Physics Research A 557, 145-164 (2006)
• Impact of a Future Energy Recovery Linac X-ray Source on Nanoscale Science
  D. Bilderback, I.V. Bazarov, J.D. Brock, E. Fontes, S.M. Gruner, G.H. Hoffstaetter, A. Kaimirov, Q. Shen, CHESS News Magazine (2005)
• Characterization of CESR BPMs Using a BPM Test Stand
  J. Urban, N. Iqbal, G.H. Hoffstaetter, M. Billing, Report Cornell-CBN-05-19 (2005)
• Status of a Plan for an ERL Extension to CESR
  G.H. Hoffstaetter, I.V. Bazarov, S. Belomestnykh, D.H. Bilderback, M.G. Billing, J.S-H. Choi, Z. Greenwald, S.M. Gruner, Y. Li, M. Liepe, H. Padamsee, D. Sagan, C.K. Sinclair, K.W. Smolenski, C. Song, R.M. Talman, M. Tigner, Proceedings of PAC05, Knoxville/TN (2005)
• Experimental Investigation of Beam Breakup in the Jefferson Laboratory 10kW FEL Upgrade Driver
  C. Tennant, D. Douglas, K. Jordan, L. Merminga, E. Pozdeyev, H. Wang, I.V. Bazarov, G.H. Hoffstaetter, C.K. Sinclair, S. Simrock, T.I. Smith, Proceedings of PAC05, Knoxville/TN (2005)
• Orbit and Optics Improvement by Evaluating the Nonlinear BPM Response in the Cornell Electron Storage Ring
  R.W. Helms, G.H. Hoffstaetter, Physical Review ST-AB 8, 062802 (2005)
• ERL upgrade of an existing X-ray facility: CHESS at CESR
  G.H. Hoffstaetter, I.V. Bazarov, D. Bilderback, M. Billing, S. Gruner, M. Liepe, D. Sagan, C. Sinclair, K. Smolenski, R. Talman, M. Tigner, Report Cornell-ERL-04-5 and Proceedings of EPAC04, Lucerne/CH (July 2004)
• Multi-pass beam-breakup: Theory and Calculation
  I.V. Bazarov, G.H. Hoffstaetter, Report Cornell-ERL-04-7 and Proceedings of EPAC04, Lucerne/CH (July 2004)
• Evaluation of Beam Position Monitors in the Nonlinear Regime
  R.W. Helms, G.H. Hoffstaetter, Proceedings of EPAC04, Lucerne/CH (July 2004)
• Results from Orbit and Optics Improvement by Evaluating the Nonlinear Beam Position Monitor Response in CESR
  R.W. Helms, G.H. Hoffstaetter, Proceedings of EPAC04, Lucerne/CH (July 2004)
• Reducing the Synchrotron Radiation on RF Cavity Surfaces in an Energy-Recovery Linac
  G. H. Hoffstaetter, M. Liepe, T. Tanabe, Report Cornell-ERL-04-6 and Proceedings of EPAC04, Lucerne/CH (July 2004)
• Beam-Breakup Instability Theory for Energy Recovery Linacs
  G. H. Hoffstaetter, I. Bazarov, Physical Review ST-AB, Volume 7, 54401 (May 2004)
• Reducing the Synchrotron Radiation on RF Cavity Surfaces in the proposed Cornell Energy-Recovery Linac
  G. H. Hoffstaetter, T. Tanabe, Report Cornell-ERL-04-2 (February 2004)
• Influence of undulators on nonlinear ERL optics
  C. Koupparis, G. H. Hoffstaetter, Report Cornell-ERL-03-14 (August 2003)
• A Lattice for a 5GeV ERL in the CESR Tunnel
  G. H. Hoffstaetter, I. Bazarov, D. Sagan, R. Talman, Report ERL03-13 and Proceedings of PAC'03, Portland/OR (May 2003)
• The Cornell ERL prototype project
  G. H. Hoffstaetter, B. Barstow, I. Bazarov, S. Belomestnykh, D. Bilderback, S. Gruner, G. Krafft, M. Liepe, L. Merminga, H. Padamsee, D. Sagan, V. Shemelin, C. Sinclair, R. Talman, M. Tigner, V. Veshcherevich, Report ERL03-12 and Proceedings of PAC'03, Portland/OR (May 2003)
• Lattice options for a 5GeV light source at Cornell
  I. Bazarov, G. H. Hoffstaetter, Report ERL03-10 and Proceedings of PAC'03, Portland/OR (May 2003)

Invited Talks

• An ERL-Driven Intense Compton Source Above 100 keV and Other ERL Application
  G. H. Hoffstaetter (CLASSE), IPAC 2022

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