PRad Weekly Meetings

PRad phone meetings are held every Friday at 11:00 am EST.

2014

March 14

• Minutes:
  1. ...
  2. ...
• Talks:
  1. Update background simulation for Vacuum box window by Li Ye (10 pages)

March 7

• Minutes: (Participants: Alexander, Ashot, Chao, Li, Mahbub, Mehdi and Zhihong)
  1. Chao and Li picked up part of the 3D positionner at NSU. One box was to big to fit in their car. They will complete the job by Tuesday.
  2. Ashot: talked to Bob and Volker, PRad is on the same footing as HPS as long as we passed the March 21st internal review with JLab management. According to Arne, the beam quality should be OK for 1-2GeV.
  3. Chao will look into the background rates due to the collimator
  4. Li will cross check his results with Chao's code to understand why the rates get smaller when the vacuum box window gets thicker. May be due to statistic.
• Talks:
  1. Background study with collimators by Chao Peng (10 pages)
  2. Background simulation for Vacuum box window by Li Ye (9 pages)

February 28

• Minutes:
  1. Target Chambers: Mahbub and Mehdi sent the initialed drawings back to Pfeiffer. Construction will take ~8-10 weeks. Little issue with an extra $200 shipping cost. Will ask for a separate bill in order to avoid redoing a new order at NSU.
  2. Alignment System: Delivered Monday Feb. 24th. Vina will bring it to Jlab.
  3. Coordinate Detector: Zhihong has been award of an $11k JSA Postdoctoral Fellowship. Will be used towards a XY position detector prototype (scintillating fiber). He will give a talk at the next CLAS meeting on Monday March 3rd. Seems that this type of detector is the best option (no need to be as precise as GEM (see Chao's studies), the UVA group is already very busy with SuperBigBite and SoLID) however the cost needs to be evaluated. Zhihong will contact detector engineers at Jlab as wells as at Saint Gobain. Will need help from Jlab for the electronic.
  4. Ahsot, FX and Mahbub will work on the halo monitor.

February 21

• Talks:
  1. Background study with collimators by Chao Peng (9 pages)

February 14

• Talks:
  1. Radius extraction 2 by Chao Peng (15 pages)
  2. He4 Bag Simulation by Li Ye (6 pages)
  3. On the possibility to reconstruct the event vertex by Alexander Gramolin (8 pages)

February 7

• Talks:
  1. Radius extraction by Chao Peng (9 pages)

January 31

• Talks:
  1. GEM Detector Simulation by Li Ye (7 pages)
  2. A simple study of the angular and Q² resolutions by Alexander Gramolin (5 pages)

January 24

• Talks:
  1. Q² resolution by Chao Peng (2 pages)

January 17

• Talks:
  1. Tracking and Q² resolution by Chao Peng (12 pages)