User name R. Michaels
Log entry time 05:50:30 on December 14,1999
Entry number 30997
This entry is a followup to: 30974
keyword=lead target, 5 microampsE-arm is set up. 5 microamps. Elastic lead run 1278.
T1 rate 88 kHz. Temp on CH3-Platinum 123 K.
Here we start a table:
CODA............Beam..............T1 Rate..........Temperature
Run #............Current
1278................5....................88 kHz..............123 to 127.
1279...............10..................174 kHz.............133 (at start)
We note at 174 kHz, VDCs draw 15 microamps.
Now, since we have measured radiative tail and don't
want to destroy VDCs, we put in the sieve slit.
T1 rate goes to 2240 Hz
1280..............10..................2240................147 K
1281..............20..................4400................160
1282..............30..................6650................175
Yuk ! Beam trips at 30 microamps. RADCON
notified to raise trip level. Below is the result so
far. Looks good.
FIGURE 1
