Photon Beam Commissioning Discussion July 23, 2014

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 says he will do this
• Estimate rates and ranges of parameters needed for the photon beam tuning (Todd for accelerator; Elton, Hovanes, Alexandre for Hall D)

Agenda

1. Announcements
2. Electron Commissioning (Todd/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 added as administrators for Hall D Operational Restrictions[1]
   • System Experts requested to write test plans for nA BPM, FFB, and Active Collimator hardware commissioning.
   • Cross Calibration Procedure for absolute current measurement desired?
   • Point of contact in Radcon for measurement test plan for fall? (George or Pavel perhaps?)
   • 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

1. Photon Commissioning Draft (Alexandre)
2. Radiation monitors
3. Aug 8 Review:
4. Other business

Minutes

Attending:'