Proton Calorimetry/Experimental Runs/2018/Oct25-6
Beam tests of the single module with PRaVDA Silicon strip tracker with trigger pulse output at the Birmingham Cyclotron with a 36 MeV beam.
Equipment List
| Item | Notes |
|---|---|
| Single Module Scintillator Block | Optical gel required to couple Scintillator to PMT |
| Photomultiplier Tube | Hamamatsu 2" |
| Portable Enclosure | Modified Peli 1510 Waterproof Wheeled Equipment Case. 230 x 555 x 350mm |
| LeCroy HDO6104 Oscilloscope | Records PMT output |
| DAQ Laptop | Controls Caen HV supply; records data from Caen digitiser. |
| Caen NDT1470 HV Supply | Supplies HV to PMT |
| Control Laptop x 2 | One each for Remote Desktop control of LeCroy Oscilloscope and DAQ Laptop. |
| Network Hub x 2 | One for the experimental room for the LeCroy HDO6104 and DAQ Laptop to connect to,
one for the control room for each of the Control Laptops to connect to. |
| Ethernet Cable x 4 | To connect each control laptop, the LeCroy HDO6104 and DAQ Laptop to their respective network hubs. |
| Ethernet Cable | To connect the two Network Hubs and complete the network for controlling DAQ equipment from the control room. |
| SMA (female) to BNC (male) Cable | Signal from enclosure port to LeCroy Oscilloscope |
| SHV Cable | HV supply from experimental room to enclosure port |
| USB Cable | Caen HV unit to DAQ Laptop |
| Gloves | For handling scintillator |
| Optical gel | For coupling scintillator to PMT |
| Wipes | For removing optical gel |
| PRaVDA Strip Tracker | PRaVDA Unit A, 3x150um Si strip sensors with 90.4um strip pitch. Firmware version update to yield square pulse out when 2 or 3 layers have a strip over threshold per read out cycle |
Beam Tests
Calorimeter files currently located at /unix/pbt/users/dwalker/data/birm_21.02.18 on UCL HEP plus1 server.
PMT Current at HV supply -900 V, beam off: 150 μA
| Run Number | High Voltage (V) | Scope Trigger (self trigger, negative edge, mV) | Target Beam Current / Rate | Collimator | Calorimeter Files | Tracker Files | Notes |
|---|---|---|---|---|---|---|---|
| 00 | -900 | -100 | ~10 kHz | 2 mm | run00_2mmCol_160pA_trig100mV | -- | |
| 01 | -900 | -140 | 160 pA / ~10 kHz | 2 mm | run01_2mmCol_160pA_trig140mV | 2mmCol_160pA_30s_Run1 | Actual beam current rose to 240 pA then 270 pA |
| 02 | -900 | -70 | 260 pA | 2 mm | run02_2mmCol_260pA_trig70mV | 2mmCol_260pA_30s_Run2 | |
| 03 | -900 | -40 | 260 pA | 2 mm | run03_2mmCol_260pA_trig40mV | 2mmCol_260pA_30s_Run3 | Beam current ~160 pA |
| 04 | -900 | -140 | 1 nA | 2 mm | run04_2mmCol_1nA_trig140mV | 2mmCol_1nA_30s_Run4 | Beam current ~1.2 nA |
| Test: HV reduced to -800 V, lights on, no increase in PMT current. Lights off for further beam runs. | |||||||
| 05 | -900 | -140 | 220 pA | 2 mm | run05_2mmCol_220pA_trig140mV_1mmPE | 2mmCol_220pA_30s_Run5 | 1 mm polyethylene cover on collimator
Beam current rose to ~260 pA |
| 06 | -900 | -140 | 160 pA | 2 mm | run06_2mmCol_160pA_trig140mV_1mmPE | 2mmCol_160pA_30s_Run6 | 1 mm polyethylene cover on collimator
Beam current rose to ~230 pA |
| 07 | -900 | -140 | 10 pA / ~30 kHz | 5 mm | run07_5mmCol_10pA_trig140mV | 5mmCol_10pA_30s_Run7 | No polyethylene
Beam current rose to ~30 pA |
| 08 | -900 | -140 | 10 pA | 5 mm | run08_5mmCol_10pA_trig140mV | 5mmCol_10pA_30s_Run8 | Repeat run for run 07 |
| 09 | -900 | -140 | 10 pA | 5 mm | run09_5mmCol_10pA_trig140mV_1mmPE | 5mmCol_10pA_30s_Run9 | 1 mm polyethylene cover on collimator
Beam spot moved - polyethylene cover slipped, 'cyclops' beam Beam current ~8 pA |
| 10 | -900 | -140 | 10 pA | 5 mm | run10_5mmCol_10pA_trig140mV_1mmPE | 5mmCol_10pA_30s_Run10 | Repeat run for run 09
Peak beam current 15 pA |
| 11 | -900 | -140 | 10 pA | 5 mm | run11_5mmCol_10pA_trig140mV_1mmPE_HalfCover | 5mmCol_10pA_30s_Run11 | 1 mm polyethylene half-cover on collimator
Beam current ~8 pA |