REBCO WG meeting

Thursday 17 Jun 2021, 11:00 → 12:20 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 → 11:20 Status update

• Subscale common coil
• COMB
• CCT

11:20 → 11:50 Subscale common coil

• Status of instrumentation plan and hardware preparation
• Any other open questions that the WG can help address?

Speakers: Anis Ben Yahia (Brookhaven National Laboratory), Maxim Martchevskii, Ramesh Gupta (BNL), Reed Teyber (LBNL)

email - header.docx

• Hall sensors
  • There are about 14 Hall sensors that will be powered in parallel. Each sensor will require a current on the order of 10 mA. Output signals can be scanned. Reed to send a few sensors for BNL to try. BNL can try Agilent DMM. Need to measure over the entire current ramp.  
• Bottom plate (5 mm thick)
  • Spot heater: need to machine a shallow pocket for the spot heater. BNL can make it. Reed to send the dimensions to Ramesh.
  • Linear acoustic sensor: groove depth about 1 mm or less. Maxim to send Ramesh the desired dimensions for the groove. Then BNL to send the bottom plate to Maxim to attach the sensor.
• Electrical schematic
  • Piyush will develop the official schematic that will be used at BNL. LBL to provide a list of operational spec (number of wiring and etc) by the end of next week. 
• Test plan 
  • Reed presented a few proposed tests.
  • Quench detection parameters. Anis did some analysis earlier.
• Expect to receive the conductors in mid August.