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
