Difference between revisions of "Calibrations"
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| Line 6: | Line 6: | ||
* Clean O-rings | * Clean O-rings | ||
* Put chamber together (with new modules including LN2 trap, solid bottom plate and central feedthrough) | * Put chamber together (with new modules including LN2 trap, solid bottom plate and central feedthrough) | ||
| − | * | + | * Do not touch the surface of the grating or the lamp window with any material! Do not put solvents on it. |
* Reconnect monochromator | * Reconnect monochromator | ||
* Adjust height to prevent bending of modules during pumping | * Adjust height to prevent bending of modules during pumping | ||
| Line 16: | Line 16: | ||
* Suspension support | * Suspension support | ||
* Clean base aluminium sample (ultrasonic bath and isopropanol) | * Clean base aluminium sample (ultrasonic bath and isopropanol) | ||
| + | * Install temperature sensor | ||
* Install sample holder with aluminium sample (for dark count measurements) | * Install sample holder with aluminium sample (for dark count measurements) | ||
* Clean cooling apparatus (ultrasonic bath and isopropanol) | * Clean cooling apparatus (ultrasonic bath and isopropanol) | ||
| Line 34: | Line 35: | ||
* Repeat in and out of the lamp beam if possible | * Repeat in and out of the lamp beam if possible | ||
* With all SiPMs | * With all SiPMs | ||
| + | * Take temperature readouts | ||
* Measure lamp | * Measure lamp | ||
* Move grating with motor to calibrate motor control | * Move grating with motor to calibrate motor control | ||
Revision as of 12:27, 26 October 2022
Calibration checklist
* Clean chamber (ultrasonic bath and isopropanol) * Take apart * Clean modules * Clean O-rings * Put chamber together (with new modules including LN2 trap, solid bottom plate and central feedthrough) * Do not touch the surface of the grating or the lamp window with any material! Do not put solvents on it. * Reconnect monochromator * Adjust height to prevent bending of modules during pumping * Connect securely * Clean sample holder (ultrasonic bath and isopropanol) * Central piece * Three frames * Three doors * Suspension support * Clean base aluminium sample (ultrasonic bath and isopropanol) * Install temperature sensor * Install sample holder with aluminium sample (for dark count measurements) * Clean cooling apparatus (ultrasonic bath and isopropanol) * Cooling braids * Screws/springs * Reconnect cooling apparatus * Cooling braids * Screws/springs * Clean readout equipment which will be inside chamber (wires) (isopropanol) * Clean SiPM holder (ultrasonic bath and isopropanol) * 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 * Take a dark count run with aluminium sample and slits closed * 30s measurement time * Repeat in and out of the lamp beam if possible * With all SiPMs * Take temperature readouts * Measure lamp * Move grating with motor to calibrate motor control * Move grating and measure intensity at each wavelength (in 10nm steps) * Compare this to the expected spectrum * Repeat for all SiPMs * Compare spectra between SiPMs * Sweep SiPMs across the beam (in 5mm steps)