User name R. Michaels
Log entry time 07:30:11 on January21,2008
Entry number 226537
This entry is a followup to: 226526
keyword=PREX tgt stress test, part 2We got permission to raise the ion chamber trip levels ;)
Run 3089 continues (it never stopped)
Time ... current ... T1 .... T3
....................... (kHz)
04:57 ... 40 uA .... 20.7 ... 12.8
Observe loop 3 is at Temp = 22.7 K.
05:08 ... 50 uA .... 26.0 ... 16.1
05:15 ... 60 uA .... 31.0 ... 19.5
05:17 Start run 3090.
Now we stay at 60 uA.
05:26 (11min) ..... 30.9 .... 19.2
05:35 (20min) ..... 30.6 .... 19.1
05:45 (30min) ..... 31.1 .... 19.3
5:55 (40min) ..... 31.5 .... 19.5
6:05 (50min) ..... 31.4 .... 19.4
6: 12 Run 3090 ended.
6: 13 Run 3091 started.
6:15 (60min) ..... 31.5 .... 19.4
6:25 (70min) ..... 31.1 .... 19.2
6:35 (80min) ..... 31.5 .... 19.5
6:45 (90min) ..... 31.5 .... 19.4
6:55 (100min) .... 31.5 .... 19.5
7:06 (111min) .... 31.5 .... 19.4
7:15 (120min) .... 31.5 .... 19.5
7:18 Run 3091 ended.
7:18 Run 3092 started and will pass on to next shift.
7:25 (130min) .... 31.3 .... 19.3
Fig 2 : Shows Rates (kHz) vs time (minutes)
(In principle should normalize to beam current -- later.)
FIGURE 1
FIGURE 2
