Difference between revisions of "HRRL 4-13-09"
Line 229: | Line 229: | ||
| Brick|| Gun Pulses|| DC pulses|| DC/Gun pulses | | Brick|| Gun Pulses|| DC pulses|| DC/Gun pulses | ||
|- | |- | ||
− | | Out|| | + | | Out|| 2690 || 982 || 36.5 % |
|- | |- | ||
− | | In|| | + | | In|| 2352 || 105 || 4.4 % |
|- | |- | ||
− | | Out|| | + | | Out|| 645 || 240 || % |
|- | |- | ||
| In|| || || % | | In|| || || % |
Revision as of 19:53, 16 April 2009
Default HRRL running Conditions
Pulse Width | Rep Rate | Energy | |
8 mA | 25 ns | 1 Hz | 3 MeV |
run plan
Date | Task |
4/11/09 | Vaho stil running til 7 pm, configure Motion Sliders |
4/12/09 | Build shutter and unstack beam line |
4/13/09 | Install Aluminum brick shutter and interlock with HRRL, test beam transport: Run HRRL accelerator from 3pm til 5 pm (25 ns pulse width, 3 MeV electrons, 1 Hz rep rate, 8 mA peak) |
4/14/09 | Repair Freon leak in Chiller, HRRL down, Install DAQ |
4/15/09 | Run HRRL from 3 pm til 5 pm (25 ns pulse width, 3 MeV electrons, 1 Hz rep rate, 8 mA peak), Do Plateau measurements and test readout |
4/16/09 | Run HRRL from 9 am til 5 pm (25 ns pulse width, 3 MeV electrons, 1 Hz rep rate, 8 mA peak), Do Plateau measurements and test readout |
4/17/09 | Run HRRL from 2 pm til 5 pm, position studies using Drift chamber and GEM |
4/20/09 | Run HRRL from 9 am til 5 pm finish detector tracking studies |
4/13/09
Electron Dose tests
Shutter In
0.1 mrad/hr outside HRRL experimental door.
2.7 mrad/hr in the end of HRRL experimental hallway.
Shutter Out
0.1 mrad/hr in Dr. Forest office.
Sintillator tests
RS1 = 2 aluminum blocks are in front of Long BLue Scintillator plugged into the cable patch panel 223A2
FS2 = Small scintillator is in 223A1
FS1 = Front Long Blue Scintillator plugged into the 223A4 and High Voltage - A3 channel.
HV SC1 | HV RS1 | Desc. |
840 | 840 |
GEM noise
100 ns RF pulse width
GEM in Accelerator room
The insulation was placed between the mylar bag and the BNC conenctor on the HV board. The inside of the mylar bag is conducting. There is a film covering the outside of the mylar bag which prevents conduction test with voltmeter.
GEM in HRRL exp cell
Bag | Rep Rate | Current | Peak to peak noise |
Off No ground strap | 990 Hz | 3 V =60 mA | ![]() | 1 mV on 1 mus scale
Off + ground strap | 990 Hz | 3 V =60 mA | 50px | mV on 1 mus scale
on No Ground strap | 990 Hz | 4 V =80 mA | 50px | mV on 1 mus scale
on + Ground strap | 990 Hz | 3 V =60 mA | 50px | mV on 1 mus scale
on + Ground strap + insulation | 990 Hz | 3 V =60 mA | ![]() | mV on 1 s scale
The insulation was placed between the mylar bag and the BNC conenctor on the HV board. The inside of the mylar bag is conducting. There is a film covering the outside of the mylar bag which prevents conduction test with voltmeter.
4/16/09
DC + FSC1 Coinc
Brick in and brick out studies. A 2x4x8 " ALuminum shutter will stop 3 MeV electrons from entering the HRRL experimental cell. Lets compare the rates seen by both a DC and a scintillator when the brick is in vs out.
Accelerator Rep rate is 100 Hz
Brick | Gun Pulses | DC pulses | DC/Gun pulses |
Out | 16990 | 1568 | 9.2 % |
In | 54801 | 310 | 0.6% |
Out | 10242 | 841 | 8.2% |
In | 17945 | 93 | 0.5 % |
Out | 20871 | 1791 | 8.6% |
In | 15101 | 71 | 0.47 % |
Out | 6549 | 531 | 8.1% |
It looks like we have electrons firing the DC 10% of the time and photons less than 1% of the time.
HV Settings S:F:G=1900:-850:1330
Accelerator Rep rate is 900 Hz
Brick | Gun Pulses | DC pulses | DC/Gun pulses |
Out | % | ||
In | % | ||
Out | % | ||
In | % | ||
Out | % | ||
In | % | ||
Out | % |
HV Settings S:F:G=1800:-900:1260
Accelerator Rep rate is 900 Hz
Brick | Gun Pulses | DC pulses | DC/Gun pulses |
Out | 1820 | 285 | 15.6 % |
In | 6048 | 161 | 2.7 % |
Out | 1420 | 219 | 15.4% |
In | 3230 | 110 | 3.4 % |
Out | 1803 | 289 | % |
In | 50868 | 1569 | % |
HV Settings S:F:G=1700:-850:1190
Accelerator Rep rate is 900 Hz
Brick | Gun Pulses | DC pulses | DC/Gun pulses |
Out | 2358 | 428 | 18 % |
In | 6576 | 123 | 1.9 % |
Out | 3115 | 531 | 17 % |
In | 86819 | 1278 | 1.5 % |
Out | 11412 | 1612 | % |
In | 11203 | 136 | % |
HV Settings S:F:G=1600:-800:1120
Accelerator Rep rate is 900 Hz
Brick | Gun Pulses | DC pulses | DC/Gun pulses |
Out | 3428 | 1010 | 29 % |
In | 3904 | 120 | 3% |
Out | 2693 | 866 | % |
In | 4056 | 168 | % |
Out | 5842 | 1934 | % |
In | 3302 | 141 | % |
HV Settings S:F:G=1550:-775:1085
Accelerator Rep rate is 900 Hz
Brick | Gun Pulses | DC pulses | DC/Gun pulses |
Out | 2690 | 982 | 36.5 % |
In | 2352 | 105 | 4.4 % |
Out | 645 | 240 | % |
In | % | ||
Out | % | ||
In | % |
HV Settings S:F:G=1500:-750:1050
Accelerator Rep rate is 900 Hz
Brick | Gun Pulses | DC pulses | DC/Gun pulses |
Out | 8021 | 1442 | 17 % |
In | 37506 | 884 | 2.3 % |
Out | 5428 | 1431 | 8.2% |
In | 4496 | 116 | 0.3 % |
Out | 3157 | 937 | % |
In | 6112 | 204 | % |
Out | 3046 | 1013 | % |
HV Settings S:F:G=1400:-700:980
Accelerator Rep rate is 900 Hz
Brick | Gun Pulses | DC pulses | DC/Gun pulses |
Out | 50815 | 5703 | 11 % |
In | 41621 | 178 | 0.4 % |
Out | 70392 | 8274 | 8.2% |
In | 34700 | 120 | 0.3 % |
Out | 9835 | 1278 | % |
In | 44456 | 102 | % |
Out | 47695 | 2410 | % |
HV Settings S:F:G=1300:-650:910
Accelerator Rep rate is 900 Hz
Brick | Gun Pulses | DC pulses | DC/Gun pulses |
Out | 38108 | 1016 | 2.66 % |
In | 48996 | 190 | 0.38 % |
Out | 23693 | 532 | 2.24% |
In | 71868 | 103 | 0.14 % |
Out | 86296 | 1693 | 1.96% |
In | 124099 | 147 | 0.118 % |
HV Settings S:F:G=1200:-600:840
Accelerator Rep rate is 900 Hz
Brick | Gun Pulses | DC pulses | DC/Gun pulses |
Out | 63976 | 141 | 0.2 % |
In | % | ||
Out | % | ||
In | % | ||
Out | % | ||
In | % |
HV Settings S:F:G=1100:-550:770
Accelerator Rep rate is 900 Hz
Brick | Gun Pulses | DC pulses | DC/Gun pulses |
Out | 38108 | 1016 | 2.66 % |
In | 48996 | 190 | 0.38 % |
Out | 23693 | 532 | 2.24% |
In | 71868 | 103 | 0.14 % |
Out | % | ||
In | % | ||
Out | % |
HV Settings S:F:G=1000:-500:700
Accelerator Rep rate is 900 Hz
Brick | Gun Pulses | DC pulses | DC/Gun pulses |
Out | 38108 | 1016 | 2.66 % |
In | 48996 | 190 | 0.38 % |
Out | 23693 | 532 | 2.24% |
In | 71868 | 103 | 0.14 % |
Out | % | ||
In | % | ||
Out | % |