Re: [BLAST_SHIFTS] zero field test

From: Chi Zhang (zhangchi@MIT.EDU)
Date: Sun Feb 27 2005 - 16:43:00 EST


Excuse me if it s already been done.

For the 0-field runs, please consider turning the HV on all LADS/BATS/NC OFF!!!.
last batch of 0-field runs in December had only 15% livetime. If we have a
trigger with singles turned off, we should by all means use it. It could also be
beneficial to turn off TOF 7 8 9 10.

Chi

ÒýÓÃ Michael Kohl <kohlm@MIT.EDU>:

> We are going to take data with zero BLAST field with ABS D2 (32deg).
> After end of run 13842, Larry Longcoy starts to tune the beam with BLAST
> off, at first with BQMs only. When BQMs are low, the Wch are turned on and
> the tune is refined with help of the Wch scalers. We will start at
> currents 50-100mA and see gradually how high we can get with regard to
> Wch tripping, Wch S/N and overall rates.
>
> Plan is to take zero-field data with ABS-D2 until Monday morning.
>
> Regards,
>
> Michael
>
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>
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