Difference between revisions of "Calibrations"
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=====Calibration checklist===== | =====Calibration checklist===== | ||
| − | * Clean chamber | + | ===Cleaning=== |
| + | |||
| + | * Clean chamber | ||
* Take apart | * Take apart | ||
| − | * Clean modules | + | * Clean modules - BOSIMANITE AL-29 followed by ROGYPAL CA-307 Z, bake for 80*C for 18 hours |
| − | * Clean O-rings | + | * Clean O-rings - Isopropanol |
| − | + | * Clean sample holder - isopropanol | |
| − | |||
| − | |||
| − | |||
| − | |||
| − | * Clean sample holder | ||
* Central piece | * Central piece | ||
* Three frames | * Three frames | ||
* Three doors | * Three doors | ||
* Suspension support | * Suspension support | ||
| − | + | * Screws/springs | |
| − | + | * Clean cooling apparatus - isopropanol | |
| − | |||
| − | * Clean cooling apparatus | ||
* Cooling braids | * Cooling braids | ||
* Screws/springs | * Screws/springs | ||
| + | * Clean base aluminium sample - isopropanol | ||
| + | * Clean readout equipment which will be inside chamber (wires) - isopropanol | ||
| + | * Clean SiPM holder - isopropanol | ||
| + | |||
| + | ===Reassembly=== | ||
| + | |||
| + | * Put chamber together (check configuration required) | ||
| + | * Reconnect monochromator | ||
| + | * Adjust height to prevent bending of modules during pumping | ||
| + | * Connect securely | ||
| + | * Install temperature sensor | ||
| + | * Install sample holder with samples | ||
* Reconnect cooling apparatus | * Reconnect cooling apparatus | ||
* Cooling braids | * Cooling braids | ||
* Screws/springs | * Screws/springs | ||
| − | |||
| − | |||
* Install SiPM holder | * Install SiPM holder | ||
* Visually test that it is in line | * Visually test that it is in line | ||
| Line 31: | Line 36: | ||
* Test to make sure all connections are secure | * Test to make sure all connections are secure | ||
* Pull vacuum down to e-3mbar | * Pull vacuum down to e-3mbar | ||
| − | * Take a dark count run with aluminium sample and | + | |
| − | * | + | ===Setup=== |
| − | * Repeat in | + | |
| + | * Take temperature reading | ||
| + | * Take a dark count run with aluminium sample and lamp off | ||
| + | * Record 10 sets of 10,000 waveforms 12us long (takes around 15 minutes each set) | ||
| + | * Repeat in the lamp beam with closed slit if possible to test light leakage | ||
* With all SiPMs | * With all SiPMs | ||
| − | |||
* Measure lamp | * Measure lamp | ||
* Move grating with motor to calibrate motor control | * Move grating with motor to calibrate motor control | ||
| − | * Move grating and measure intensity at each wavelength (in | + | * Move grating and measure intensity at each wavelength (in predefined steps) |
| − | * Compare this to the expected spectrum | + | * Compare this to the expected spectrum plus SiPM response |
* Repeat for all SiPMs | * Repeat for all SiPMs | ||
* Compare spectra between SiPMs | * Compare spectra between SiPMs | ||
| − | * Sweep SiPMs across the beam (in | + | * Sweep SiPMs across the beam (in predefined steps) |
Latest revision as of 09:58, 24 November 2022
Calibration checklist
Cleaning
* Clean chamber * Take apart * Clean modules - BOSIMANITE AL-29 followed by ROGYPAL CA-307 Z, bake for 80*C for 18 hours * Clean O-rings - Isopropanol * Clean sample holder - isopropanol * Central piece * Three frames * Three doors * Suspension support * Screws/springs * Clean cooling apparatus - isopropanol * Cooling braids * Screws/springs * Clean base aluminium sample - isopropanol * Clean readout equipment which will be inside chamber (wires) - isopropanol * Clean SiPM holder - isopropanol
Reassembly
* Put chamber together (check configuration required) * Reconnect monochromator * Adjust height to prevent bending of modules during pumping * Connect securely * Install temperature sensor * Install sample holder with samples * Reconnect cooling apparatus * Cooling braids * Screws/springs * Install SiPM holder * Visually test that it is in line * Reconnect readout equipment * Test to make sure all connections are secure * Pull vacuum down to e-3mbar
Setup
* Take temperature reading * Take a dark count run with aluminium sample and lamp off * Record 10 sets of 10,000 waveforms 12us long (takes around 15 minutes each set) * Repeat in the lamp beam with closed slit if possible to test light leakage * With all SiPMs * Measure lamp * Move grating with motor to calibrate motor control * Move grating and measure intensity at each wavelength (in predefined steps) * Compare this to the expected spectrum plus SiPM response * Repeat for all SiPMs * Compare spectra between SiPMs * Sweep SiPMs across the beam (in predefined steps)