REBCO WG meeting

Thursday 24 Mar 2022, 11:00 → 12:40 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? 

1 Update on magnet status

• subscale common coil: instrumentation needs
• 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)

• Subscale common coil
  • Groove in the subscale common coil is large enough to co-wind the sensor from Maxim.
  • ACT will install the spot heaters after coil winding. It will not affect the hardware design.
  • Travel to ACT is possible during coil fabrication and instrumentation installation.
  • ACT plans to deliver the magnet in May. The schedule to test the magnet as an insert at 4.2 K at BNL is to be determined. BNL plans to test the coil at 77 K after receiving it.  
• COMB: short-sample holder to be shipped to ACT for winding and test at 76 K in April. The test results will help decide the next step for the COMB magnet.
• 3-turn C3: will start making coils in the week of 3/28.

 

• Reed presented the analysis of V-I transition and power generation when a defect is introduced into a CORC wire. The analysis provides interesting insight into the maximum allowable voltage for a CORC magnet during a quench.

 

• Two seminars on alternative REBCO cable options are planned.

2 Analysis on V-I transition and power generation for a CORC wire

Speaker: Reed Teyber (LBL)