View source for Meeting 27 March 2020

DISCUSSION TOPICS

* [https://wiki.jlab.org/cuawiki/images/6/64/Gn_cps_update_03_27_2020all.pdf 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)'''