source: MML/trunk/chromMML.txt @ 35

Last change on this file since 35 was 5, checked in by zhangj, 11 years ago

ThomX MML version on the LAL server @ 17/12/2013
File size: 1.1 KB
Line 
1(1) Twissring.m or atsummary.m; fitchrom2.m; tunechrom.m
2
3call linopt.m, then
4Use the 4D one turn map.
5findm44()
6
7
8
9For ThomX ring:  CDR_017_072_r56_02_sx_Dff_corrSX_BPMIP.m
10
11tune_DDP =
12
13   3.174924939207250   1.719870195003575
14
15DDP =1e-8
16
17tune =
18
19   3.174924939041714   1.719870195095099
20
21
22(tune_DDP-tune)/DDP
23
24ans =
25
26   0.016553558523924  -0.009152345548102
27
28
29(2) modelchro.m & modeltune.m & gettune.m & steptune.m
30
31   Use the 6D order transfer matrix findm66.m
32
33For ThomX ring:  CDR_017_072_r56_02_sx_Dff_corrSX_BPMIP.m
34
35FracTune1 =
36
37   0.174925870391515
38   0.719871470894530
39
40FracTune0 =
41
42   0.174925868824909
43   0.719871468757788
44
45DeltaRF =
46
47     1.000000000000000e-07
48
49Chro = (FracTune1 - FracTune0) / DeltaRF
50     =  0.015666058728048
51        0.021367424496432
52Chro = (-MCF * RF0) * Chro
53     = -0.107062428651483
54       -0.146025774595083
55
56
57(3) Measchro.m
58 
59    call gettune.m, then modeltune.m, then use findm66.m
60
61
62 use the polynominal fit, dp = 1e-5
63
64
65
66The fitted chromaticity are also -0.10616 -0.148526
67
68The chromaticity from measchro.m & modelchrom.m are slightly different.
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