Difference between revisions of "Calibrations"
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* Clean modules - BOSIMANITE AL-29 followed by ROGYPAL CA-307 Z, bake for 80*C for 18 hours | * Clean modules - BOSIMANITE AL-29 followed by ROGYPAL CA-307 Z, bake for 80*C for 18 hours | ||
* Clean O-rings - Isopropanol | * Clean O-rings - Isopropanol | ||
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| − | |||
| − | |||
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* Clean sample holder - isopropanol | * Clean sample holder - isopropanol | ||
* Central piece | * Central piece | ||
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===Reassembly=== | ===Reassembly=== | ||
| + | * Put chamber together (check configuration required) | ||
| + | * Reconnect monochromator | ||
| + | * Adjust height to prevent bending of modules during pumping | ||
| + | * Connect securely | ||
* Install temperature sensor | * Install temperature sensor | ||
* Install sample holder with samples | * Install sample holder with samples | ||
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===Setup=== | ===Setup=== | ||
| − | * Take a dark count run with aluminium sample and | + | * Take temperature reading |
| − | * | + | * Take a dark count run with aluminium sample and lamp off |
| − | * Repeat in | + | * 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)