Meeting 13 February 2018

PRESENTATIONS

FLUKA Simulations for absolute baseline (Parker Reid)

Target rotation and irradiation (Bogdan)

NOTES

* Action items for next meeting on Tuesday, 13 March at 3:00pm (EST):

• Result for backward shielding and optimization of shielding overall (Parker/Bogdan)
• Result for effect of polarized target and CPS together (Jixie)
• Outline for a 10-page document (topics/chapters/arguments to make and type of figures) and for a 1-page appendix (what would change in Hall D, e.g. floor loading etc., demonstration that the concept is doable) (Tanja/Thia)

• Discussion of Parker's simulation

• In principle can use this way to determine backward shielding needs and perform overall shielding optimization: remove everything, but keep radiator, no field, so exactly what would have in hall - compare backward rate for 100uA on 2% carbon to CPS

• Discussion of what information still needed for review document

• Effect of both polarized target and CPS in Hall - Jixie's simulation has shown radiation from polarized target and CPS separately and these look ok, now need to see both together
• Backward shielding
• Optimization of shielding: why choice of specific shielding and what thickness

• Discussion about contents of the review document

• Selection of figures and text that demonstrate: 1) radiation acceptable 2) design feasible

• Discussion about an alternative polarized target moving concept that moves the beam (horizontally) instead of a mechanical structure (target stick vertical motion) for uniform irradiation