Difference between revisions of "Beam Line"
From Hall A Wiki
(→Beam position monitors (BPM) and calibration procedure) |
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- from there pull down the "Expert Screens" and open "Gain Control" | - from there pull down the "Expert Screens" and open "Gain Control" | ||
- for IOCSE10, use the pull down window and change from "auto gain" to "forced gain". | - for IOCSE10, use the pull down window and change from "auto gain" to "forced gain". | ||
| − | - then change the | + | - then change the forced gain values x and y to zero. |
2. CODA has to run in pedestal mode: | 2. CODA has to run in pedestal mode: | ||
| Line 33: | Line 33: | ||
- select "PEDRUN" - Press RunTypes button in RunControl | - select "PEDRUN" - Press RunTypes button in RunControl | ||
| − | 3. Run [http://hallaweb.jlab.org/experiment/E97-110/get_bpm_pedestals.C get_bpm_pedestals.C] | + | 3. Have MCC change the BPM gain back to "auto gain". |
| + | |||
| + | 4. Run [http://hallaweb.jlab.org/experiment/E97-110/get_bpm_pedestals.C get_bpm_pedestals.C] | ||
in the root analyzer: | in the root analyzer: | ||
- you might have to modify some details | - you might have to modify some details | ||
Revision as of 17:22, 2 October 2008
Contents
- 1 E06-010 Instrumentation Requirement List: Jian-Ping Chen's memo to Kees De Jager, 08/07/08
- 2 ARC energy measurement
- 3 Compton Polarimeter
- 4 HARP and HARP scan procedures
- 5 Beam raster
- 6 Beam charge monitors (BCM) and calibration procedure
- 7 Beam position monitors (BPM) and calibration procedure
- 8 Moller polarimeter and results of measurements
- 9 Scattering chamber upstream and downstream beam pipe size and window thickness
- 10 HAPPEX Luminosity (Lumi) monitors
- 11 Beam dump
E06-010 Instrumentation Requirement List: Jian-Ping Chen's memo to Kees De Jager, 08/07/08
ARC energy measurement
Compton Polarimeter
HARP and HARP scan procedures
Please follow the directions at the Harp Scan Page [Harp Scan page]
Beam raster
Beam charge monitors (BCM) and calibration procedure
Beam position monitors (BPM) and calibration procedure
How to perform a BPM pedestal run:
1. MCC hast to follow the following procedure:
- open BPM window "BPM Diagnostics - SEE"
- from there pull down the "Expert Screens" and open "Gain Control"
- for IOCSE10, use the pull down window and change from "auto gain" to "forced gain".
- then change the forced gain values x and y to zero.
2. CODA has to run in pedestal mode:
- if you were running before you first have to press Abort
- choose the appropriate configuration in runcontrol
- select "PEDRUN" - Press RunTypes button in RunControl
3. Have MCC change the BPM gain back to "auto gain".
4. Run get_bpm_pedestals.C in the root analyzer:
- you might have to modify some details
- the code should print out the new pedestals at the end
- load the database into an editor and change them (2nd line of the [BPMx] blocks)
