Meeting 5 October 2017
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PRESENTATIONS
NOTES
- Discussion of magnet updates
- Previously make projections with toy model, but in real magnet have coil and other things to take into account - this is addressed here
- New design has shaped/flared field - allows to go to higher field (integrated Bdl is 1 T-m)
- Shorter magnet
- note: typically define magnet length through edges of magnetic field, coils may be longer - details have to be studied in simulation
- originally had 2 T-m, now caps are small and put in copper core --> smaller field
- Change materials for better heat conductivity (shield heat) - realistic materials
- energy deposition decreases with distance - after 20 cm trajectory entirely in material (copper)
- if conductivity was the only aspect and if volume is small, one may consider silver as central absorber - higher Z and better conductivity
- Initial calculations show very small bend angle, so expect no significant focusing effects, but need to check in simulation
- Discussion about not limiting design power to 30 kW to make a more uniform design with Hall A/C and Hall D
- What is the max power limit for the Hall A/C design? - try to estimate
- Discussion about safety factors that may come up in a readiness review
- Handling of internal activation in context of decommissioning
- Try to estimate after implementing the new materials - could compare CPS internal activation with that of beam dump
- Discussion of readiness review and funding
- Condition for experiment approval from PAC45 is to prove that design works at estimated price and show that this achieves a certain photon intensity
- To achieve this, need to confirm/show feasibility of conceptual design and document CPS - time estimate is 6-9 months
- Next is an internal review by the lab that needs to be scheduled with B. McKeown (can be documents, presentations or both)
- One possible funding option is MRI program - need to look in more detail at precedents
- CPS Collaboration Meeting
- Will be in week of January 22 together with NPS Collaboration Meeting
- Some talk suggestions: Magnet Concept, Rotatable Target Update, Additional Science ideas
- Please send additional talk topic to hornt@cua.edu by 19 October
- Also aim for having a talk on Status of CPS integrated into Hall A/C meeting taking place in the same week
HOMEWORK
- Implement design into simulation and address questions
- Power deposition
- Prompt radiation
- Activation
- Other details
- Start CPS documentation in context of readiness review
- Estimate of max power limit for the Hall A/C design and comparison of internal CPS activation to that of beam dump