[Esr-users] Hall C SHMS Dipole tests complete

Paul Brindza brindza at jlab.org
Mon Dec 18 12:43:54 EST 2017


Hi


We tested the SHMS Dipole up to 2100 Amps successfully today.

We Measured a couple of transistor banks that were warmer than the rest.

T max 47 C , T ave 31 C, baseline was 27 C at zero amps.

The is the most likely cause of Mondays transition from ramp down to 
slow dump.

We held current for 30 Minutes and did before after T scans and it is 
stable.

SHMS dipole is on cold return and max current is set to 2150 A which is 
below the threshold for quench back.

Cheers


Paul







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