CBPM Beam Position Monitor Electronic Logbook
14 Mar 2025 - 08:28
Description
This log book is for monitoring work done with the 1st generation bunch-by-bunch
CBPM system.
February 2006
February 28, 2006 (M. Palmer)
- 17:50 Time in the CBPM system in low energy conditions.
- Approx. 2.5 mA T1B1 e+
- Write configuration file cbpm_00255.cfg
- Install as temporary server constants file until remaining calibrations complete.
- 18:40 Take new pedestals
- No current
- Write configuration file cbpm_00256.cfg
- 18:57 Take electron timings
- Approx. 5 mA T1B1 e-
- Write configuration file cbpm_00257.cfg
- Install cbpm_00257.cfg as official cbpm_server constants file
- Possible problem at 8W for phase measurements
- Phase 06388 with T1B1 e- shows a problem with 8W detector
- This is near the "logic race" region in the west flare
- Note that we had added a timing pickoff module at 3W a short while back
- Orbit 110171 appears reasonable
- Strongly suspect that phase measurement for T1B1 e- is off by a turn here
- Phase xxxxxx with T1B1 e+
October 2007
Diagnostics on BPM 10W
- 1900 Attempted to time in BPM 10W with a single positron bunch in machine
CBPM_RAW_BUF CESR BPM 10W
buf no : button 0 button 1 button 2 button 3 phase word Horz Vert cmd/trig
0 : 64.0000 0.0000 0.0000 0.0000 0X00000000 0X0000 0X0000 0X0000
1 : 64.0000 0.0000 0.0000 0.0000 0X00000000 0X0000 0X0000 0X0000
2 : 64.0000 0.0000 0.0000 0.0000 0X00000000 0X0000 0X0000 0X0000
3 : 64.0000 0.0000 0.0000 0.0000 0X00000000 0X0000 0X0000 0X0000
4 : 64.0000 0.0000 0.0000 0.0000 0X00000000 0X0000 0X0000 0X0000
5 : 64.0000 0.0000 0.0000 0.0000 0X00000000 0X0000 0X0000 0X0000
6 : 64.0000 0.0000 0.0000 0.0000 0X00000000 0X0000 0X0000 0X0000
7 : 64.0000 0.0000 0.0000 0.0000 0X00000000 0X0000 0X0000 0X0000
8 : 64.0000 64.0000 0.0000 0.0000 0X00000000 0X0000 0X0000 0X0000
9 : 64.0000 64.0000 0.0000 0.0000 0X00000000 0X0000 0X0000 0X0000
10 : 64.0000 64.0000 0.0000 0.0000 0X00000000 0X0000 0X0000 0X0000
11 : 64.0000 64.0000 0.0000 0.0000 0X00000000 0X0000 0X0000 0X0000
12 : 64.0000 0.0000 0.0000 0.0000 0X00000000 0X0000 0X0000 0X0000
13 : 64.0000 64.0000 0.0000 0.0000 0X00000000 0X0000 0X0000 0X0000
14 : 64.0000 64.0000 0.0000 0.0000 0X00000000 0X0000 0X0000 0X0000
15 : 64.0000 64.0000 0.0000 0.0000 0X00000000 0X0000 0X0000 0X0000
16 : 64.0000 64.0000 0.0000 0.0000 0X00000000 0X0000 0X0000 0X0000
17 : 64.0000 64.0000 0.0000 0.0000 0X00000000 0X0000 0X0000 0X0000
18 : 64.0000 64.0000 0.0000 0.0000 0X00000000 0X0000 0X0000 0X0000
19 : 64.0000 64.0000 0.0000 0.0000 0X00000000 0X0000 0X0000 0X0000
20 : 64.0000 64.0000 0.0000 0.0000 0X00000000 0X0000 0X0000 0X0000
21 : 64.0000 64.0000 0.0000 0.0000 0X00000000 0X0000 0X0000 0X0000
22 : 64.0000 0.0000 0.0000 0.0000 0X00000000 0X0000 0X0000 0X0000
23 : 64.0000 64.0000 0.0000 0.0000 0X00000000 0X0000 0X0000 0X0000
24 : 64.0000 64.0000 0.0000 0.0000 0X00000000 0X0000 0X0000 0X0000
25 : 1167.0000 974.0000 1128.0000 1415.0000 0X0E1D5808 0X01c3 0X0156 0X0008
26 : 1171.0000 979.0000 1138.0000 1443.0000 0X04D03C08 0X009a 0X000f 0X0008
27 : 1171.0000 969.0000 1138.0000 1447.0000 0X04D03C08 0X009a 0X000f 0X0008
28 : 1162.0000 969.0000 1121.0000 1420.0000 0X0B932008 0X0172 0X00c8 0X0008
29 : 1175.0000 975.0000 1152.0000 1493.0000 0X024E0408 0X0049 0X0181 0X0008
30 : 1178.0000 982.0000 1162.0000 1536.0000 0X0900E808 0X0120 0X003a 0X0008
<\pre>
After running several diagnostics, it appears that there is a problem with setting the timing registers for CBPM module 3 which was
located at 10W. Swapped module 19 for module 3.
MAP