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User name Eric Voutier
Log entry time 16:12:33 on March 5,2000
Entry number 35647
keyword=Shift Summary
New Crew on shift: Eric Voutier, Ron Gilman, Jeff Templon
***************
.9:15... beam fluctuations, MCC is investigating the problem at the injector level
.9:25... still beam fluctuations, MCC is ask for a 1/4 of an hour to cure
10:15... beam is back
11:45... end Kin#93, moving to Carbon
Carbon pointing will be made at the same time as the energy measurement while
the beam is still in achromatic mode and with 5uA.
11:40... give over the beam to Arun for Arc energy measurement and start Carbon
pointing measurements. Starting with HARP scan along the beam line.
11:55... Hall C wants to do some calibration studies and needs to have us running
at the highest current. Therefore, we are going back to the helium 3 target and do
some measurement with collimator in up to the time that Hall C is done.
---> Regulation rule: when working with small current, energy lock should be on Hall C
12:50.. go back to Carbon target while Arun is taking over the beam
13:20.. Arun notices that the last HARP scan (entry 35491) indicates a beam spot
about 300um x 300um. If such a spot would barely not influence the quality of
elastic scattering data, it MUST be tuned again at the usual 100um x 100um value
for quasielastic scattering.
15:30 Harp Scan has been delivering the values X/Y = 234um/245um a bit too large
for quasielastic standard
-# Run history
..2613..... Kin#93 / He3 / 1.804 M / good run.... 1.804 M
..2614..... Kin#93 / He3 / 0.742 M / good run.... 2.546 M
..2615..... Kin#93 / He3 / 0.656 M / good run.... 3.202 M
..2616..... Kin#93 / He3 / 0.166 M / good run.... 3.368 M
..2617..... Kin#93 / He3 / 1.803 M / good run.... 5.171 M
..2618..... Kin#93 / He3 / 1.000 M / good run.... 6.171 M
..2619..... Kin#93 / C12 / 30 k events / good run
..2620..... Kin#93 / He3 / Collimator in / 0.910 M good run
..2621..... Kin#93 / C12 / Collimator out / good run (beam spot changing size)
..2622..... Kin#93 / C12 / Collimatour out / 1.0 M / good run