Subject: Simultaneous phase/coupling/eta correction for characterization 4/22/2008 From: Jim Crittenden Date: Thu, 01 May 2008 14:15:50 -0400 To: David Rubin CC: David Sagan , Mike Billing , Mark Palmer , Stu Peck At DLR's suggestion, I attempted a simultaneous phase/eta correction on the characterization data Stu took on April 22 (phase 7260, eta 688). I played with the weighting a little. The results are similar to those I showed in the followup to last week's meeting. I will show them in today's LET meeting for discussion. The phase, eta and coupling before correction are here: http://www.lepp.cornell.edu/~critten/cesrta/let/1may08/MODE00120286.GIF http://www.lepp.cornell.edu/~critten/cesrta/let/1may08/MODE00120287.GIF The phase, eta and coupling after correction are here: http://www.lepp.cornell.edu/~critten/cesrta/let/1may08/MODE00120288.GIF http://www.lepp.cornell.edu/~critten/cesrta/let/1may08/MODE00120289.GIF Below I append the output of "show top" before and after running the optimizer, as well as the script ETAPHASECORR.IN. --Jim ======================================================== James Crittenden Tel. (607) 255-9424 Wilson Synchrotron Laboratory Fax (607) 255-8062 Cornell University Ithaca, New York 14853-8001 ======================================================== Before correction: show top ------------------------------------ Top10 merit | Top10 derivative | Top10 delta Name ix Value | Name ix Derivative | Name ix delta Eta_X 26 3.2 Quad_K1 59 -4.096E+03 Quad_K1 48 0.000000 Eta_X 24 2.7 Quad_K1 34 -3.409E+03 Quad_K1 51 0.000000 Eta_X 30 2.2 Quad_K1 24 -3.065E+03 Quad_K1 23 0.000000 Eta_X 32 1.9 Quad_K1 45 -2.912E+03 Quad_K1 76 0.000000 Eta_X 28 1.4 Quad_K1 69 -2.699E+03 Quad_K1 21 0.000000 Eta_X 22 1.3 Quad_K1 46 2.129E+03 Quad_K1 78 0.000000 Eta_X 33 1.3 Quad_K1 89 -2.015E+03 Quad_K1 40 0.000000 Eta_Y 80 0.8 Quad_K1 14 -1.967E+03 Quad_K1 59 0.000000 Eta_X 20 0.8 Quad_K1 36 -1.863E+03 Quad_K1 94 0.000000 Phase_Y 8 0.7 Quad_K1 62 1.840E+03 Quad_K1 6 0.000000 Merit: 52.24145 Merit sum for: Orbit_X 0.0000E+00 Merit sum for: Orbit_Y 0.0000E+00 Merit sum for: Phase_X 7.3093E+00 Merit sum for: Phase_Y 1.2903E+01 Merit sum for: Eta_X 2.6080E+01 Merit sum for: Eta_Y 5.9483E+00 Merit sum for: Tune_X 0.0000E+00 Merit sum for: Tune_Y 0.0000E+00 Merit sum for: Cbar_12 0.0000E+00 Merit sum for: dE/E 2.8199E-20 Merit sum for: Quad K1 2.9872E-04 After correction: show top ------------------------------------ _CESRV> run Optimizing using: ALL_VARS Data to Optimize: ORBIT & TWISS Initial merit: 52.24145 Loop Merit A_lambda 1 22.562 1.00E-04 2 21.881 1.00E-05 3 21.722 1.00E-06 4 21.705 1.00E-07 5 21.703 0.00E+00 Top10 merit | Top10 derivative | Top10 delta Name ix Value | Name ix Derivative | Name ix delta Eta_X 24 2.0 Quad_K1 65 -1.945E+01 Quad_K1 50 -0.019592 Eta_X 30 1.3 Quad_K1 59 -1.887E+01 Quad_K1 92 -0.018054 Eta_X 26 1.1 Quad_K1 89 -1.725E+01 Quad_K1 49 0.017700 Eta_X 32 0.8 Quad_K1 30 -1.722E+01 Quad_K1 96 -0.012751 Eta_Y 80 0.8 Quad_K1 36 -1.589E+01 Quad_K1 94 0.011417 Eta_X 28 0.7 Quad_K1 4 1.550E+01 Quad_K1 33 -0.009439 Eta_X 22 0.5 Quad_K1 54 -1.545E+01 Quad_K1 3 0.009166 Eta_X 20 0.4 Quad_K1 8 1.521E+01 Quad_K1 35 0.008611 Eta_X 33 0.4 Quad_K1 83 1.489E+01 Quad_K1 93 0.008118 Eta_Y 7 0.4 Quad_K1 77 1.421E+01 Quad_K1 90 0.008013 Merit: 21.70291 Merit sum for: Orbit_X 0.0000E+00 Merit sum for: Orbit_Y 0.0000E+00 Merit sum for: Phase_X 3.0211E+00 Merit sum for: Phase_Y 7.3823E-01 Merit sum for: Eta_X 1.1968E+01 Merit sum for: Eta_Y 5.9726E+00 Merit sum for: Tune_X 0.0000E+00 Merit sum for: Tune_Y 0.0000E+00 Merit sum for: Cbar_12 0.0000E+00 Merit sum for: dE/E 2.0027E-19 Merit sum for: Quad K1 2.9942E-03 ETAPHASECORR.IN ------------------------------ ! This CESRV script is designed to correct ! the dispersion (688) and phase (7260) measurements ! of 22 April 2008 (688) ! using all non-superconducting quads ! 1 May 2008 JAC l:CHESS_20050617 read e:688 veto eta 38w veto eta 26e veto eta 20e veto eta 16e veto eta 9e read p:7260 veto phase 3w veto phase 4w veto phase 5w veto phase 6w veto phase 47w veto phase 47e veto phase 45e veto phase 4e veto cbar 3w veto cbar 4w veto cbar 5w veto cbar 6w veto cbar 47w veto cbar 47e veto cbar 45e veto cbar 4e merit_data all veto vert 0:99 veto hori hb01:hb06 opt_vars all n n veto skew all veto sex all veto bpm_tilt all veto vert all veto hori all veto quad all ! use skew 2w:2e use quad 3w:3e ! use quad 10w:34w opt locked plot phase plot eta bottom clip bottom 0.6 clip top 20.0 scale bottom 0.6 scale top 20.0 out gif yes no Prior to simultaneous phase/coupling/eta correction plot cbar bottom scale bottom 0.1 out gif yes yes set orbit_x_wgt(0:99)=0 set orbit_y_wgt(0:99)=0 set eta_x_wgt(0:99)=0. set eta_x_wgt(0:99)=20. set eta_y_wgt(0:99)=20. set phase_x_wgt(0:99)=20. set phase_y_wgt(0:99)=20. ! set cbar12_wgt(0:99)=1e2 set cbar12_wgt(0:99)=0 set quad_k1_wgt(0:99)=1e0 set skew_wgt=1e0 merit all sho data phase x 3 sho data eta x 3 limit off show top run ! plot model-design plot eta bottom scale bottom 0.6 scale top 20. out gif yes no After simultaneous phase/coupling/eta correction plot cbar bottom scale bottom 0.1 out gif yes yes