Subject: Simultaneous phase/eta correction of the horizontal dispersion anomaly From: Jim Crittenden Date: Thu, 17 Apr 2008 14:26:35 -0400 To: David Rubin CC: Mike Billing , Sasha Temnykh , David Sagan Dave et al, I succeeded in using cesrv to do a simulaneous correction of phase and eta for the January 8 vertical-corrector-off eta measurement. I used equal weights for horiz and vertical phase as for horizontal eta. It seems to have worked very well. The result can be seen here: http://www.lepp.cornell.edu/~critten/cesrta/talks/17apr08/MODE00120099.GIF The optimizer result is appended below. I will report on this in today's meeting. -- Jim ======================================================== James Crittenden Tel. (607) 255-9424 Wilson Synchrotron Laboratory Fax (607) 255-8062 Cornell University Ithaca, New York 14853-8001 ======================================================== CESRV> run Optimizing using: ALL_VARS Data to Optimize: ORBIT & TWISS Dmerit: Read dMerit matrix from Digested Dmerit File. Initial merit: 10.02491 Loop Merit A_lambda 1 9.010 1.00E-04 2 8.493 1.00E-05 3 8.347 1.00E-06 4 8.308 1.00E-07 5 8.308 0.00E+00 Top10 merit | Top10 derivative | Top10 delta Name ix Value | Name ix Derivative | Name ix delta Eta_X 24 0.8 Quad_K1 34 -2.371E+02 Quad_K1 50 0.004188 Eta_X 26 0.7 Quad_K1 14 -2.179E+02 Quad_K1 49 0.003070 Eta_X 30 0.3 Quad_K1 89 2.161E+02 Quad_K1 13 0.002820 Eta_X 28 0.3 Quad_K1 18 -2.084E+02 Quad_K1 19 0.001566 Eta_X 22 0.3 Quad_K1 65 2.028E+02 Quad_K1 51 -0.001529 Eta_X 32 0.3 Quad_K1 75 1.977E+02 Quad_K1 62 -0.001504 Quad_K1 84 0.2 Quad_K1 81 1.817E+02 Quad_K1 26 0.001380 Quad_K1 96 0.2 Quad_K1 24 -1.696E+02 Quad_K1 48 0.001380 Quad_K1 9 0.2 Quad_K1 48 1.613E+02 Quad_K1 46 -0.001372 Quad_K1 15 0.2 Quad_K1 57 -1.475E+02 Quad_K1 11 0.001367 Merit: 8.307610 Merit sum for: Beta_X 2.0190E-01 Merit sum for: Beta_Y 5.1602E-01 Merit sum for: Orbit_X 0.0000E+00 Merit sum for: Orbit_Y 0.0000E+00 Merit sum for: Phase_X 8.7140E-02 Merit sum for: Phase_Y 6.2259E-02 Merit sum for: Eta_X 3.9680E+00 Merit sum for: Eta_Y 0.0000E+00 Merit sum for: Tune_X 0.0000E+00 Merit sum for: Tune_Y 0.0000E+00 Merit sum for: Cbar_12 3.0064E-03 Merit sum for: dE/E 7.1160E-06 Merit sum for: Quad K1 3.4693E+00 X | Y Model Design | Model Design Chrom 0.986 0.996 0.571 0.652 ! dQ/(dE/E) dChrom 0.000 0.000 [dChrom = (Model - Data) - (Design - Ref) if a reference is being used.] [dChrom = (Model - Data) otherwise.]