Beam Test Jul 24 2012

Energy Switch	Out (High En)
Solenoid 1	6.7 A
Solenoid 2	1.5 A
Gun Hor	+0.3 A
Gun Ver	-0 A
Output Hor	-0.4 A
Output Ver	+0 A
Rep Rate	11
Gun HV	10 (Knob Setting)
Gun Grid Voltage	10 (Knob Setting)
RF frequency	2856.243 MHz
Modulator HV Power Supply	4.19 (Knob Setting)
RF macro Pulse Length (FWHM)	300 ns
Q1 (A)	-2
Q2 (A)	+0.8
Q3 (A)	+2
Q4 (A)	-2
Q5 (A)	+0.8
Q6 (A)	+2
Current at FC0	32 mA

Switching T2

Originally, for T2 we used a thick target from Alfa Aesar. Dimension of the target is 25x50mm, with thickness of 2.0 mm (0.08 inch), 99.95% (metals basis).

We realized most photons can not travel through the target and go into the NaI detectors.

So, we switched T2 to the thinner target [thinner_target] from MIDWEST TUNGSTEN SERVICE. With Dimension of 0.040" x 1.50" x1.50".

Calibration runs with sources

run# Source HV-DL HV-DR Pulser-period start-time end-time
3553  Na-22 1082V 1223V 20 micro-sec  19:01:34   19:58:29
3554  Na-22 1082V 1223V 5  micro-sec  20:00:50   20:11:32
3557  Na-22 1082V 1223V 10 micro-sec  
3558  Na-22 1082V 1223V 10 micro-sec  
3559  Na-22 1150V 1150V 10 micro-sec

run# Source HV-DL HV-DR  start-time end-time
3659  Na-22 1150V 1150V  20:56:28   21:17:04
3660  Na-22 1200V 1200V  21:19:12   23:54:11
3661  Na-22 1100V 1100V  23:55:40

Fit for run 3659 Detector Left

FCN=103.893 FROM MIGRAD    STATUS=CONVERGED      80 CALLS          81 TOTAL
                    EDM=2.79556e-08    STRATEGY= 1      ERROR MATRIX ACCURATE 
 EXT PARAMETER                                   STEP         FIRST   
 NO.   NAME      VALUE            ERROR          SIZE      DERIVATIVE 
  1  Constant     1.00983e+01   5.71803e-01   2.14796e-03  -4.37889e-04
  2  Mean         9.59542e+02   2.82634e+00   1.41234e-02  -1.14806e-05
  3  Sigma        6.19726e+01   2.65427e+00   5.40892e-05  -1.71544e-03