Difference between revisions of "Photon Beam Commissioning Discussion July 23, 2014"
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== References == | == References == | ||
− | * [https:// | + | * [https://halldweb.jlab.org/hdops/wiki/index.php/Hall_D_Commissioning Hall D Commissioning Pages] |
* [[Media:HallD_beam_delivery_proc_1b9.pdf | DRAFT Accelerator Hall D Beam Delivery Procedures(V.1b9)]] | * [[Media:HallD_beam_delivery_proc_1b9.pdf | DRAFT Accelerator Hall D Beam Delivery Procedures(V.1b9)]] | ||
* [[Media:Tagger_operation_procedure.docx | DRAFT Accelerator Tagger Magnet Operation Procedures(V. 0)]] | * [[Media:Tagger_operation_procedure.docx | DRAFT Accelerator Tagger Magnet Operation Procedures(V. 0)]] | ||
Line 18: | Line 18: | ||
== Action Items == | == Action Items == | ||
− | * Send Todd a geometry of tagger area, including the mapped tagger magnet field, for GEANT simulations (Richard). Sasha | + | * Send Todd a geometry of tagger area, including the mapped tagger magnet field, for GEANT simulations (Richard). Sasha defined geometry, Richard will add field map |
* Estimate rates and ranges of parameters needed for the photon beam tuning (Todd for accelerator; Elton, Hovanes, Alexandre for Hall D) | * Estimate rates and ranges of parameters needed for the photon beam tuning (Todd for accelerator; Elton, Hovanes, Alexandre for Hall D) | ||
Line 24: | Line 24: | ||
# Announcements | # Announcements | ||
# Electron Commissioning (Todd/Mike) | # Electron Commissioning (Todd/Mike) | ||
+ | # Photon Commissioning Draft (Alexandre) | ||
+ | # Radiation monitors | ||
+ | # Aug 8 Review: | ||
+ | #* [http://www.jlab.org/Hall-D/halld_secure/reviews/PhotonBeamCommissioning_Internal_Aug2014/ Photon Beam Commissioning Review Page] | ||
+ | # Other business | ||
+ | |||
+ | == Minutes == | ||
+ | |||
+ | ''Attending: Elton, Alexandre, Hovanes, Eugene, Sasha (Hall D), Mike (Ops); Curtis (CMU); Richard (UConn) | ||
+ | |||
+ | # Action Items | ||
+ | #* Sasha has updated geometry in tagger area. Richard will add the magnetic field produced by Dan. If time is short, the TOSCA map can be used. | ||
+ | # Electron Commissioning (Mike) | ||
#*The Hall D Beam Delivery Procedure is heading toward Rev. 10 with the feedback which was received. | #*The Hall D Beam Delivery Procedure is heading toward Rev. 10 with the feedback which was received. | ||
#*Ion Chamber Procedures are currently under review for release and use. | #*Ion Chamber Procedures are currently under review for release and use. | ||
#*Eugene/Curtis have been added as administrators for Hall D's Operational Restrictions[http://opsweb.acc.jlab.org/internal/ops/ops_webpage/restrictions/ops_restrictions.html] | #*Eugene/Curtis have been added as administrators for Hall D's Operational Restrictions[http://opsweb.acc.jlab.org/internal/ops/ops_webpage/restrictions/ops_restrictions.html] | ||
− | #*System Experts requested to write test plans for nA | + | #*System Experts have been requested to write test plans for hardware commissioning of the nA BPMs, FFB system, and the Active Collimator. |
− | #*Cross Calibration Procedure for absolute current measurement desired? | + | #*Is a Cross Calibration Procedure for absolute current measurement desired? (Between Faraday Cup 2 in the Injector and the Hall BCM) |
− | #* | + | #** Not needed at this time. |
+ | #*Need to identify the appropriate point of contact in Radcon to write the measurement test plan for fall (George K. or Pavel perhaps?) | ||
+ | #** Alexandre is in communication with Melvin Washington to coordinate plans for monitoring (see below) | ||
#*Regarding minimum deliverable current (open question from last time): | #*Regarding minimum deliverable current (open question from last time): | ||
{| class="wikitable" style="text-align: center; color: black;" | {| class="wikitable" style="text-align: center; color: black;" | ||
Line 38: | Line 53: | ||
|} | |} | ||
# Photon Commissioning Draft (Alexandre) | # Photon Commissioning Draft (Alexandre) | ||
+ | ## Rates | ||
+ | ##* Estimate of expected rates (Eugene will work on rates for the PS and the profile monitor) | ||
+ | ##* Need to get range of motion specifications for all devices | ||
+ | ## Procedures for checking individual detectors | ||
+ | ##* Beam commissioning can assume beamline detectors are working, but entry should point to procedure for checking/commissioning each detector subsystem, e.g. 'expert procedures' in the documentation wiki | ||
+ | ## Plan for commissioning | ||
+ | ##* Centering on target: use start counter? profiler upstream of target? | ||
+ | ##* Decided that we should plan to use the profiler at a) collimator b) upstream of target and c) upstream of beam dump. Hovanes/ Alexandre will coordinate with Tim to make appropriate stands. | ||
+ | ##* (Hovanes) Current plan is to use a portable VME crate for the profile monitor. Access to LV near the dump is problematic and will have to be worked out. | ||
# Radiation monitors | # Radiation monitors | ||
+ | #* Alexandre has been working with RadCon to borrow detectors that can be used this fall in the tagger area and Hall D | ||
+ | #* 4 probes: 2 n and 1 g in tagger hall; 1 g in collimator cave | ||
+ | #* 40 personnel dosimeters (OSLs), most to be placed in the tagger hall, some in Hall D | ||
# Aug 8 Review: | # Aug 8 Review: | ||
+ | #* [http://www.jlab.org/Hall-D/halld_secure/reviews/PhotonBeamCommissioning_Internal_Aug2014/ Photon Beam Commissioning Review Page] | ||
+ | #* Review of information on Review page - Elton will update based on feedback | ||
+ | #* Material for the review due July 29 evening: draft of presentations and all pre-brief material | ||
# Other business | # Other business | ||
− | + | #* Next meeting: Tuesday July 29, 4 pm | |
− | + | ||
− | + | ||
− | + |
Latest revision as of 06:20, 1 April 2015
Organization
- Time: 4 pm EST
- Connecting: detailed instructions are here
- H.323 ip address: 199.48.152.152
- web browser: https://bluejeans.com/536076821
- phone: 408-740-7256 or 888-240-2560
- Conference id: 536076821
References
- Hall D Commissioning Pages
- DRAFT Accelerator Hall D Beam Delivery Procedures(V.1b9)
- DRAFT Accelerator Tagger Magnet Operation Procedures(V. 0)
- DRAFT Accelerator Hall D Ion Chamber Functional Test Procedure(V.1b3)
- DRAFT Accelerator Hall D Ion Chamber Calibration Procedure(V.1b2)
Action Items
- Send Todd a geometry of tagger area, including the mapped tagger magnet field, for GEANT simulations (Richard). Sasha defined geometry, Richard will add field map
- Estimate rates and ranges of parameters needed for the photon beam tuning (Todd for accelerator; Elton, Hovanes, Alexandre for Hall D)
Agenda
- Announcements
- Electron Commissioning (Todd/Mike)
- Photon Commissioning Draft (Alexandre)
- Radiation monitors
- Aug 8 Review:
- Other business
Minutes
Attending: Elton, Alexandre, Hovanes, Eugene, Sasha (Hall D), Mike (Ops); Curtis (CMU); Richard (UConn)
- Action Items
- Sasha has updated geometry in tagger area. Richard will add the magnetic field produced by Dan. If time is short, the TOSCA map can be used.
- Electron Commissioning (Mike)
- The Hall D Beam Delivery Procedure is heading toward Rev. 10 with the feedback which was received.
- Ion Chamber Procedures are currently under review for release and use.
- Eugene/Curtis have been added as administrators for Hall D's Operational Restrictions[1]
- System Experts have been requested to write test plans for hardware commissioning of the nA BPMs, FFB system, and the Active Collimator.
- Is a Cross Calibration Procedure for absolute current measurement desired? (Between Faraday Cup 2 in the Injector and the Hall BCM)
- Not needed at this time.
- Need to identify the appropriate point of contact in Radcon to write the measurement test plan for fall (George K. or Pavel perhaps?)
- Alexandre is in communication with Melvin Washington to coordinate plans for monitoring (see below)
- Regarding minimum deliverable current (open question from last time):
Stripline BPM Resolutions | ≥ 30nA 100um resolution | < 30nA resolution suffers(position noisy barring additional filtering) | 3nA yields expected resolution ≈ 300 µm |
- Photon Commissioning Draft (Alexandre)
- Rates
- Estimate of expected rates (Eugene will work on rates for the PS and the profile monitor)
- Need to get range of motion specifications for all devices
- Procedures for checking individual detectors
- Beam commissioning can assume beamline detectors are working, but entry should point to procedure for checking/commissioning each detector subsystem, e.g. 'expert procedures' in the documentation wiki
- Plan for commissioning
- Centering on target: use start counter? profiler upstream of target?
- Decided that we should plan to use the profiler at a) collimator b) upstream of target and c) upstream of beam dump. Hovanes/ Alexandre will coordinate with Tim to make appropriate stands.
- (Hovanes) Current plan is to use a portable VME crate for the profile monitor. Access to LV near the dump is problematic and will have to be worked out.
- Rates
- Radiation monitors
- Alexandre has been working with RadCon to borrow detectors that can be used this fall in the tagger area and Hall D
- 4 probes: 2 n and 1 g in tagger hall; 1 g in collimator cave
- 40 personnel dosimeters (OSLs), most to be placed in the tagger hall, some in Hall D
- Aug 8 Review:
- Photon Beam Commissioning Review Page
- Review of information on Review page - Elton will update based on feedback
- Material for the review due July 29 evening: draft of presentations and all pre-brief material
- Other business
- Next meeting: Tuesday July 29, 4 pm