Meeting 26 June 2020

DISCUSSION ITEMS

• Radiation simulations and heat transfer calculations

• Shielding and magnet model

• CPS Design Model Update

• Hall A/C model and design/implementation

• Hall D design and radiation simulations

• Other

PARTICIPANTS: Amy Comer, Josh Crafts, Hovanes Egiyan, Hamlet Mkrtchyan, Tanja Horn, Vardan Tadevosyan, Bogdan Wojtsekhowski, David Hamilton, Gabriel Niculescu, Sean Dobbs, Marie Boer, Rolf Ent, Vladimir Berdnikov

MEETING NOTES

TCS proposal (Marie, Vardan)

• proposal submitted - additional optimization planned before PAC presentation
• Action: circulate final version to collaboration

RADIATION SIMULATION AND HEAT TRANSPORT (Gabriel)

• initial heat transport from 2017 was all Cu inside
• for new WCu received CAD drawings from Josh - working on implementation into heat transport code, assumes direct contact between W and Cu
• initial comparison of Cu vs new WCu setup - same heat load, not much temp difference

• model assumes 1/4" (5mm) diameter, 15 holes per side

• Actions:

• next step: make slot rather than many holes for the WCu setup; Josh working on model
• specify water flow rate - currently assumed temperature of water: 30 degC, also specify speed of water so not too fast for destroying material and maintaining needed water temperature

CPS SHIELDING MODEL (Josh)

• CPS core: split v shimmed

• cooling channel being implemented - envision rectangular tube, maybe two, along the long axis

• Rectangular hole size vs. circular hole size

• rastering beam, size small compared to beam size, no need for circular - magnetic field orientation horizontal so only bend in vertical
• heat distribution should be uniform - if circular channel then some geometrical disadvantages

• Bonding between W and Cu - look for thermal bonding material that works at these temperatures

• CPS magnet side plates

• For sides can use stainless steel
• Make magnet dimensions a little bigger to match better to shielding configuration - cannot have too many odd sizes of lead bricks

• Recheck with SLAC on shipping of lead bricks

UPDATE FROM HALL D (Sean)

• Radiation simulations ongoing

PLACEMENT OF CPS IN HALL C - UPDATE

• Ease of installation in Hall C makes downstream the better option

• Hall C communicating with User Community to check on any negative impact on science of the downstream configuration

• Work ongoing with Scientific Magnetics for transverse target - quote expected soon, also investigating pumping station needs

NEXT MEETING: FRIDAY JULY 10th AT 11:00AM (ET)