Log entry time 04:02:39 on November 14, 2008

Entry number 248715

There was a successful NMR cross calibration. 

However, before next test, the correction coil current is not correctly 
setup. And polarization goes to low (~10%). So an spin up has been 
started for 
        Spin Down. 
        NMR Setting same as Spin Flip
        Time Interval = 120 min
        Oven = 230C
        Laser = 3 Comet Laser:
           1.Rutgers@34A.20C
           2.WM@35A.26C
           3.JLab@36A.25C


Start Point:
			Pick up Coil Pos
      Trans - Holding Field
      Spin Antiparallel to Field
      Pol.=~60%
11:06 NMR Freq Sweep -> Pol = ~60% (42mV)
          RTD#0->6=67C 133C 167C 106C 52C 223C 221C 
11:20 Bigbite ->710A
11:51 Pumping Laser Off
      From now on there is no good NMR pol first guess 
      since cell temperature changes 
12:33 Temp Stable to 
          Oven=330C
          Coil=-4.601A,6.232A,0.712A
          RTD#0->6=66C 134C 167C 107C 53C 224C 221C
12:40 Target -> He3
12:43 Freq NMR @ He3 
      -> Pol=~60% (40mV), Peak @ 81kHz 
12:53 Temp Stable to 
          Oven=330C
          Coil=-4.599A,6.230A,0.712A
          RTD#0->6=40C 71C 140C 61C 38C 223C 220C
--------------------------------------------------------
              NMR Cross Calibration Start
--------------------------------------------------------
12:54 Freq NMR @ He3 
      -> Pol=50-60% 33mV 
01:00 Field -> Long +
01:02 Target -> Pick Coil
01:13 Temp Stable to 
          RTD#0->6=64c 130c 167c 105c 52c 224C 221C
01:14 Field NMR @ Ref 
      -> Pol=~56% (calib const changes when he3 temperature changes)
01:15 Target -> He3
01:27 Temp Stable to 
          RTD#0->6=40C 71C 137C 62C 38C 223C 221C
01:27 Freq NMR @ He3 
      -> Pol=50-60% (31mV)
--------------------------------------------------------
             NMR Cross Calibration Ends
--------------------------------------------------------
01:50 Temperature change screen shot
02:06 NMR Field Sweep. Pol.=~40~50%
02:09 NMR AFP loss test with 2 field sweep 
      -> AFP Loss =~ 0.7%
02:25 NMR AFP loss test with 5 Frequency sweep (Same Setting As Spin 
Flip) 
      -> AFP Loss =~ 0.7%
2:38  Correction Coil On to 
      Large = 5.00A
      Small = 5.00A
2:39  NMR AFP loss test with 2 Frequency sweep with Correction Coil ON 
      -> AFP Loss = ~20%, 
      -> Field Gradiant = Extream High, Peak Width is 5 time of normal
2:47  Correction Coil On to 
      Large = 1.00A
      Small = 1.00A
2:47  NMR AFP loss test with 5 Frequency sweep with Correction Coil ON 
      -> Field Gradiant = High, Peak Width is 1.5 time of normal
      -> AFP Loss = ~ 2.7%
2:58  Correction Coil On to 
      Large = 0.50A
      Small = 0.50A 
2:59  NMR AFP loss test with 5 Frequency sweep with Correction Coil ON 
      -> AFP Loss = ~ 1.5%
3:10  Correction Coil OFF
3:12  NMR AFP loss test with 5 Frequency sweep with Correction Coil ON 
      -> AFP Loss = ~ 1.0%
      -> Pol. = ~10%
3:30  Laser ON, Wait Temperature Stablized
3:47  Start Spin Up
        Spin Down. 
        NMR Setting same as Spin Flip
        Time Interval = 120 min
        Oven = 230C
        Laser = 3 Comet Laser:
           1.Rutgers@34A.20C
           2.WM@35A.26C
           3.JLab@36A.25C

Temperature change during cross calibration