REBCO WG meeting

Thursday 18 Aug 2022, 11:00 → 12:00 US/Pacific

• What performances and parameters should the conductor have? How can we make magnets using these conductors? 
• What is the maximum dipole field a REBCO magnet can generate?  
• What is the magnet performance? How does it quench? What is the field quality? 
• Does the magnet performance degrade, e.g., during operation, after thermal cycles? If so, how can we prevent it?  
• How can we characterize the performance for long conductors? 

11:00 → 11:30 Update on magnet status

• subscale common coil
• COMB
• c3

Speakers: Anis Ben Yahia (Brookhaven National Laboratory), Maxim Martchevskii, Ramesh Gupta (BNL), Reed Teyber (LBNL), Vadim Kashikhin (Fermilab), Vito Lombardo (Fermilab), Xiaorong Wang (LBNL)

Magnet status

• Subscale common coil
  • Successfully test fit the CORC^® insert inside the Nb₃Sn outsert.
  • Test plan under preparation. 
  • Working with MDP collaborators to prepare the test instrumentation.
  • Possible test window: late September or early October. 
• COMB
  • Magnet design optimization ongoing with ACT
  • Propose to acquire more conductors to make test coils
• Subscale C3
  • Tested Layer 1, 78% I_c retention at 77 K after winding. Examine the contribution from magnetic field.
  • Will continue making the remaining layers. 
• Updated on the CPRD proposals that will be discussed by the CPRD committee next week.

Snowmass discussion

• Need to understand the field quality of HTS magnets. Also talk to accelerator physicists.
• Power consumption is a concern for future colliders. How can HTS magnets help? Demonstrating 20 K operation? 
• Muon collider is becoming interesting (again). How can HTS magnets help, in addition to the high-field solenoids?

11:30 → 12:00 Impressions from Snowmass

Speaker: Dr Steve Gourlay (LBNL)