Meeting 27 March 2020

DISCUSSION TOPICS

• Simulations

• Magnet and shielding

• Hall D updates

• Other

ACTION ITEMS

• Analyze recent radiation simulation results

• Make an updated Hall A/C CPS sketch (new overall dimensions, weight) for Steve L. and team to check in the model. Make sure all CPS kinematics are available to the engineers/designers. Plan to discuss with the engineering team in April 17 meeting.

• Get suggested Hall D CPS configurations (Sean)

SUMMARY NOTES

• Radiation simulations (Gabriel)

• Pb configuration works in the backward region (<0cm)
• Tungsten seems the best option for the forward region, but some more tuning may be needed, e.g. more W laterally out to 70cm

• See these CPS Next Phase notes for guidance

• Tungsten may be down to ~1m3
• Was there a low energy cut applied? What was it?

• Magnet and CPS design (Bogdan, Thia)

• Keeping all components on the pivot may be difficult - possible options were discussed with the engineering team. Should check in where they are.

• About 100 tons of lead are available from SLAC. Process has started to ship ~80 tons of lead to JLab. Discussion about storage ongoing with RADCon

• Hall D CPS

• Tagger area in Hall D: should be fine to move permanent magnet downstream and put CPS in that position
• Weight up to ~150 tons (few square meters) should be fine
• Need suggested configurations from Sean

• TCS: work on checking the impact of magnetic field on low energy (~100 MeV) particles is ongoing

NEXT MEETING: FRIDAY 17 APRIL AT 11:00AM (ET)