[BLAST_SHIFTS] Shift summary 12/01/2003 D (12-16)

From: Electronic Log Book (elog@blast05.lns.mit.edu)
Date: Mon Dec 01 2003 - 15:14:19 EST


Operators: kdow seely tancredi

Beam has been off all day. There was a problem with an IOC in the Injector Control Room. There were also accesses to the hall to add cryopump shielding (possibly we can run BLAST at 6730A now), change the nozzle alignment to get more ABS flux (unsuccessful), and perhaps look at the BRP NEGs. The rear wire chamber covers were removed. The top slit was repaired (LVC27T).

There is a problem with the ion pumps (or at least the readback) in the polarized injector, so the valve below the gun chamber won't be opened until they're sure the vacuum is good (otherwise the crystal might be poisoned). That won't happen until 16:30 or so.

This morning Genya realized that the MFT was not on resonance, since the BLAST field was cycled after he finished tuning on Saturday. So the ABS polarization for the weekend runs was low. There will be instructions for shift people on how to check that the settings are correct.

Some runs were taken with cosmics to test the second level trigger. Two long cosmic runs were taken with newphys.settings to get L/R cosmic coincidences for Chris Crawford's timing investigations (3566, and 3568 in progress).



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