Beam Test Jul 26 2012
Revision as of 15:00, 27 July 2012 by Setisadi (talk | contribs) (→Beam Current Calibration of Scint Left)
Tune
| Energy Switch | Out (High En) |
| Solenoid 1 | 13.9 A |
| Solenoid 2 | 4.1 A |
| Gun Hor | -0 A |
| Gun Ver | +0.2 A |
| Output Hor | -0.3 A |
| Output Ver | -0 A |
| Rep Rate | 17 |
| Gun HV | 10 (Knob Setting) |
| Gun Grid Voltage | 10 (Knob Setting) |
| RF frequency | 2856.321 MHz |
| Modulator HV Power Supply | 4.19 (Knob Setting) |
| RF macro Pulse Length (FWHM) | 300 ns |
| Q1 (A) | -3 |
| Q2 (A) | +0.8 |
| Q3 (A) | +2 |
| Q4 (A) | 0 |
| Q5 (A) | 0 |
| Q6 (A) | 0 |
| Current at FC0 | 96 mA |
DAQ runs
TDC CH5 was a delay of (32+16+8+4+2+1+0.5)+ (16+8+4+2+1+0.5) = 95 nano second.
| run# | T1 | T2 | Sweep Magnet | logic | HV-D2L | HV-D1R | Reprate | start | stop | Int Rate | comments |
| 3679 | in | in | out | (DL & GunTrig) or (DR & GunTrig) | 1060V | 1080V | 100 | 08:48:00 | 09:28:01 | 42.3 events/s | ADC12 has Sintilator1 (Sint @ exit of 90 deg). |
| 3680 | in | OUT | out | (DL & GunTrig) or (DR & GunTrig) | 1060V | 1080V | 100 | 09:29:37 | 09:46:19 | 42.6 events/s | ADC12 has Sintilator1 (Sint @ exit of 90 deg). |
| 3682 | in | OUT | out | (DL & GunTrig) AND (DR & GunTrig) | 1150V | 1150V | 100 | 09:55:20 | 10:33:56 | 4.8884 events/s | TDC cable was upside down, now it is flipped. Sintilator left was put to CH9. |
| 3683 | in | IN | out | (DL & GunTrig) AND (DR & GunTrig) | 1150V | 1150V | 100 | 10:36:03 | 10:53:48 | 5.9397 events/s | TDC5->beam left |
| 3684 | in | IN | out | (DL & GunTrig) AND (DR & GunTrig) | 1150V | 1150V | 100 | 10:54:19 | 11:25:01 | 8.7974 events/s | TDC3->beam right, TDC5->beam left |
| 3685 | in | out | out | (DL & GunTrig) AND (DR & GunTrig) | 1150V | 1150V | 100 | 11:26:43 | 11:31:01 | 18 events/s | junk, rate are too high. |
We changed the discriminator from Octal discriminator (LeCroy modle 623B) to 8 CH Constant Fraction Discriminator (CFD) (CAEN model N842). The threshold on the detector beam left is 29, and on the detector right is 31.
Following is the image of coincidence of left and right detectors using this CFD.
| run# | T1 | T2 | Sweep Magnet | logic | HV-D2L | HV-D1R | Reprate | start | stop | Int Rate | Connections | comments |
| 3686 | in | in | out | (DL & GunTrig) AND (DR & GunTrig) | 1150V | 1150V | 100 | 11:54:44 | 12:15:44 (1260 s) | 4.8262 events/s | TDC3->DL, TDC->DR | |
| 3687 | in | out | out | (DL & GunTrig) AND (DR & GunTrig) | 1150V | 1150V | 100 | 12:19:15 | 12:43:14 (1411 s) | 3.6 events/s | TDC3->DL, TDC5->DR | |
| 3688 | in | in | out | (DL & GunTrig) AND (DR & GunTrig) | 1150V | 1150V | 100 | 12:44:09 | 13:25:09 (2460 s) | 4.9743 events/s | TDC3->DL, TDC12->DR | switched DR from TDC5 to TDC12 |
| 3689 | in | out | out | (DL & GunTrig) AND (DR & GunTrig) | 1150V | 1150V | 100 | 13:27:23 | 14:12:29 (2706 s) | 3.3156 events/s | TDC3->DL, TDC12->DR | CFD out-put of DL (to TDC9) and DR (to TDC10) connected to TDC. (Connected to the top row of LeCroy Model 4616.) |
| 3690 | in | in | out | (DL & GunTrig) AND (DR & GunTrig) | 1150V | 1150V | 100 | 14:13:16 | 15:23:44 (4228 s) | at the beginning was 4.9 then later changed to 13.5111 events/s | TDC3->DL, TDC12->DR | CFD out-put of DL (to TDC9) and DR (to TDC10) connected to TDC. (Connected to the seond row of LeCroy Model 4616.) |
| 3691 | in | out | out | (DL & GunTrig) AND (DR & GunTrig) | 1150V | 1150V | 100 | 14:13:16 | 16:36:19 | 14.2079 events/s | TDC3->DL, TDC12->DR | High voltage of scintilator at 90 deg exit set to 1300 V. Scintlator at 90 deg moved to CH13. |
| 3692 | in | in | in | (DL & GunTrig) AND (DR & GunTrig) | 1150V | 1150V | 100 | 16:40:18 | 17:00:56 | 23.9270 events/s | TDC3->DL, TDC12->DR | |
| 3694 | in | in | in | (DL & GunTrig) AND (DR & GunTrig) | 1150V | 1150V | 100 | 10 events/s | TDC3->DL, TDC12->DR | |||
| 3696 | in | in | in | (DL & GunTrig) AND (DR & GunTrig) | 1150V | 1150V | 100 | 17:30:08 | 17:31:39 | 10 events/s | TDC3->DL, TDC12->DR |
Beam Current Calibration of Scint Left
Determine if the Beam Left Scintillator is linear with beam current.
| run# | FC1 | Scint Left (Ch9) | Reprate | start | stop | Int Rate | comments |
| 3703 |   |
100 | 08:38:24 | 08:41:52 ( s) | 38.4 events/s | first measurement at full current | |
| 3705 |   |
100 | 09:03: | :: ( s) | events/s | cut the current in half | |
| 3706 |   |
100 | 17:: | 17:: ( s) | events/s | ||
| 3699 |   |
100 | 17:: | 17:: ( s) | events/s |
Data Analysis
comparing r3686 and r3687
Detector on the right: 
Detector on the left: 
comparing r3688 and r3689
Detector on the right: 
Detector on the left: 
Detector Calibrations
| run# | T1 | T2 | Sweep Magnet | logic | HV-D2L | HV-D1R | Reprate | start | stop | Int Rate | comments |
| 3679 | in | in | out | (DL & GunTrig) or (DR & GunTrig) | 1060V | 1080V | 100 | 08:48:00 | 09:28:01 | 42.3 events/s | ADC12 has Sintilator1 (Sint @ exit of 90 deg). |
| 3680 | in | OUT | out | (DL & GunTrig) or (DR & GunTrig) | 1060V | 1080V | 100 | 09:29:37 | 09:46:19 | 42.6 events/s | ADC12 has Sintilator1 (Sint @ exit of 90 deg). |
| 3682 | in | OUT | out | (DL & GunTrig) AND (DR & GunTrig) | 1150V | 1150V | 100 | 09:55:20 | 10:33:56 | 4.8884 events/s | TDC cable was upside down, now it is flipped. Sintilator left was put to CH9. |
| 3683 | in | IN | out | (DL & GunTrig) AND (DR & GunTrig) | 1150V | 1150V | 100 | 10:36:03 | 10:53:48 | 5.9397 events/s | TDC5->beam left |
| 3684 | in | IN | out | (DL & GunTrig) AND (DR & GunTrig) | 1150V | 1150V | 100 | 10:54:19 | 11:25:01 | 8.7974 events/s | TDC3->beam right, TDC5->beam left |
| 3685 | in | out | out | (DL & GunTrig) AND (DR & GunTrig) | 1150V | 1150V | 100 | 11:26:43 | 11:31:01 | 18 events/s | junk, rate are too high. |
We changed the discriminator from Octal discriminator (LeCroy modle 623B) to 8 CH Constant Fraction Discriminator (CFD) (CAEN model N842). The threshold on the detector beam left is 29, and on the detector right is 31.
Following is the image of coincidence of left and right detectors using this CFD.
| run# | T1 | T2 | Sweep Magnet | logic | HV-D2L | HV-D1R | Reprate | start | stop | Int Rate | Connections | comments |
| 3686 | in | in | out | (DL & GunTrig) AND (DR & GunTrig) | 1150V | 1150V | 100 | 11:54:44 | 12:15:44 (1260 s) | 4.8262 events/s | TDC3->DL, TDC->DR | |
| 3687 | in | out | out | (DL & GunTrig) AND (DR & GunTrig) | 1150V | 1150V | 100 | 12:19:15 | 12:43:14 (1411 s) | 3.6 events/s | TDC3->DL, TDC5->DR | |
| 3688 | in | in | out | (DL & GunTrig) AND (DR & GunTrig) | 1150V | 1150V | 100 | 12:44:09 | 13:25:09 (2460 s) | 4.9743 events/s | TDC3->DL, TDC12->DR | switched DR from TDC5 to TDC12 |
| 3689 | in | out | out | (DL & GunTrig) AND (DR & GunTrig) | 1150V | 1150V | 100 | 13:27:23 | 14:12:29 (2706 s) | 3.3156 events/s | TDC3->DL, TDC12->DR | CFD out-put of DL (to TDC9) and DR (to TDC10) connected to TDC. (Connected to the top row of LeCroy Model 4616.) |
| 3690 | in | in | out | (DL & GunTrig) AND (DR & GunTrig) | 1150V | 1150V | 100 | 14:13:16 | 15:23:44 (4228 s) | at the beginning was 4.9 then later changed to 13.5111 events/s | TDC3->DL, TDC12->DR | CFD out-put of DL (to TDC9) and DR (to TDC10) connected to TDC. (Connected to the seond row of LeCroy Model 4616.) |
| 3691 | in | out | out | (DL & GunTrig) AND (DR & GunTrig) | 1150V | 1150V | 100 | 14:13:16 | 16:36:19 | 14.2079 events/s | TDC3->DL, TDC12->DR | High voltage of scintilator at 90 deg exit set to 1300 V. Scintlator at 90 deg moved to CH13. |
| 3692 | in | in | in | (DL & GunTrig) AND (DR & GunTrig) | 1150V | 1150V | 100 | 16:40:18 | 17:00:56 | 23.9270 events/s | TDC3->DL, TDC12->DR | |
| 3694 | in | in | in | (DL & GunTrig) AND (DR & GunTrig) | 1150V | 1150V | 100 | 10 events/s | TDC3->DL, TDC12->DR | |||
| 3696 | in | in | in | (DL & GunTrig) AND (DR & GunTrig) | 1150V | 1150V | 100 | 17:30:08 | 17:31:39 | 10 events/s | TDC3->DL, TDC12->DR |
Beam Current Calibration of Scint Left
Determine if the Beam Left Scintillator is linear with beam current.
| run# | Source | HV-D2L | HV-D1R | start | stop | Int Rate | Connections | comments |
| 3699 | Na22 | 1150V | 1150V | 18:20:47 | 18:21:33 | 103.6 events/s | TDC3->DL, TDC->DR | A lot of error message saying no data in TDC and ADC. |
| 3699 | Na22 | 1150V | 1150V | 18:26:15 | 20:45:47 | 103.6 events/s | TDC3->DL, TDC->DR |