User name Kelly, no RF
Log entry time 15:59:12 on June25,2000
Entry number 44897
keyword=day shift summary
Continue production running at thcm=0.
0830: MCC adjusted pathlength
0830: The rear x1 histogram has a ragged region of about 16 channels.
1000: Rear x1 histogram is getting worse. Bad region about 32 channels
1045: Most FPP spectra are now bad and reconstruction is affected.
We've called Mark Jones about FPP and plant engineering
about the temperature in the hadron hut. They report that the
temperature reading is still about 78 deg, but perhaps it is
worse near the electronics.
1100: arranged for access at about 1130 with Mark and engineering
1100: CHL alarm takes all RF off. MCC evaluating problem and
1145: enter Hall to check FPP multiplexing and hut air conditioning
1315: leave hall. Air conditioner on rhs was off. Plant engineering
changed filter and restarted unit. No obvious problem with
signals, but timing shifts could be subtle. Running cosmics
while hut cools down again.
run events comments
==== ===== ========
2534 1.3 M
2535 1.3 M
2536 1.3 M
2537 0.75 M stopped because of CHL alarm
2539 cosmics, runtype hadron, ps1-5 ->1
2540 cosmics, runtype twospect, ps1-5 -> 1
2541 cosmics, ps4=1000, others 1.
2542 cosmics, ps3=1, others=65535