Difference between revisions of "Compton Meeting, May 23, 2011"
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=== Photon detector === | === Photon detector === | ||
| − | JC - BCM | + | ==== Replay ==== |
| − | BPM - waiting for commit from Paul. Within next week. Will allow absolute position and differences. | + | # JC - working on BCM and BPM analyser code for replay. BCM - . BPM - waiting for commit from Paul. Within next week. Will allow absolute position and differences. Talked about the benefits of having the BPMs calibrated |
| − | Talked about the benefits of having the BPMs calibrated | + | # Dithering - we only have the flag since beginning of April. |
| + | # Pedestals for replay, we will have long periods of constant pedestal for each detector-ADC combination. Mark to make plots of pedestal over time. Use 'beam off' pedestals. | ||
| + | # Agreement that 'burst-mode' analysis not necessary for photon detector. | ||
| − | + | ==== Detector ==== | |
| + | # PMT in middle of 4 crystals, Hamlet found ice-box (Don to check if it fits), will mount 1 mm plastic fibers to reflect of mylar on the front (JC to talk to Vardan about this.) | ||
| + | # JC has Megan's paper on LED pulser linearity system and is beginning to work on it. | ||
| − | + | ==== DAQ ==== | |
| − | + | # Increase speed by going to DMA. | |
| − | + | # There is a benefit to coincidence mode to find unexpected 'stuff' in both detectors but it's not a high priority. | |
| − | |||
| − | |||
=== Electron detector === | === Electron detector === | ||
| − | + | # Busy organizing analysis into more systematic effort, DD says he will implement most of the suggestions | |
| − | + | https://qweak.jlab.org/elog/DAQ+%26+Analysis/215 | |
Revision as of 12:55, 23 May 2011
Agenda
Doodle poll reminder
Laser
- Update on plans for laser work (Mark)
- Kent's Transfer function measurement note https://qweak.jlab.org/elog/Laser/93
- Designing mount for transfer function
- Summer intern (Brandon Cavness) arrives tomorrow
Photon detector
- Replay (wdc):
- On ifarml, aim for middle of June
- All resulting ROOT files will be stored on work disk
- Replay will include all macros as well
- Prereq: full BCM/BPM analysis
- Photon detector analyzer status:
- Scaler BCM/BPM read-out status (jc)
- What else? (excl. electron det)
- PbWO4:
- Summary meeting with Hamlet last Wednesday (kent/mark/dave/wdc)
- Dual pulser linearity test system (pulser logic) (jc?)
- DAQ summer plans:
- Increase data transfer speed to allow for more snapshots/longer sample windows
- Coincidence mode: What specs? Are we happy with what we have (Mark's accumulator mode response function)?
Electron detector
Attendance
Mark, Amrendra, Wouter, JC, Kent, DD, Don
Minutes
Laser
- Discussed the need for the new mount: the ability to align the optical axis of the GL and the rotation axis of the rotation mount.
- Discussed the cavity power measurement. Electron detector group will do some analysis to see their sensitivity.
Photon detector
Replay
- JC - working on BCM and BPM analyser code for replay. BCM - . BPM - waiting for commit from Paul. Within next week. Will allow absolute position and differences. Talked about the benefits of having the BPMs calibrated
- Dithering - we only have the flag since beginning of April.
- Pedestals for replay, we will have long periods of constant pedestal for each detector-ADC combination. Mark to make plots of pedestal over time. Use 'beam off' pedestals.
- Agreement that 'burst-mode' analysis not necessary for photon detector.
Detector
- PMT in middle of 4 crystals, Hamlet found ice-box (Don to check if it fits), will mount 1 mm plastic fibers to reflect of mylar on the front (JC to talk to Vardan about this.)
- JC has Megan's paper on LED pulser linearity system and is beginning to work on it.
DAQ
- Increase speed by going to DMA.
- There is a benefit to coincidence mode to find unexpected 'stuff' in both detectors but it's not a high priority.
Electron detector
- Busy organizing analysis into more systematic effort, DD says he will implement most of the suggestions
