[Halld-cal] [New Logentry] Base Replacements and Health of FCAL

gleasonc at jlab.org gleasonc at jlab.org
Mon Jan 22 11:15:02 EST 2018


Logentry Text:
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9 bases were replaced today. Most of these bases were noisy channels as flagged by Sasha.

Two dead channels were investigated. It was found that the two cables, PMTs, and bases of the dead channel were okay. These cables were then unplugged from the fADC crate and showed good signal. This means that the two fADC's need to be replaced. The whole crate is not dead, just the individual channel. These channels are D2-2-Top channel 17 and D2-6-Top channel 6.

X FCAL	Y FCAL	Base ID	Reason	New Base ID	Old CAN ID	New CAN ID
-26	11	21753	HV	21107	7547697	7484092
-13	-22	23510	Hot Channel	23523	7507864	7486336
-5	-15	22323	HV	23213	7516936	7548444
-2	0	23518	0 occupancy	21744	7489469	7553371
1	-26	23100	Hot Channel	22101	7499247	7525175
1	11	21777	0 occupancy	21695	7499541	7500183
7	21	22387	Hot Channel	20320	7566379	7538863
15	7	22087	Hot Channel	23319	7497788	7520022
15	8	22728	Hot Channel	21518	7499634	7499443

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This is a plain text email for clients that cannot display HTML.  The full logentry can be found online at https://logbooks.jlab.org/entry/3519080
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