Identification

Jungfrau 4M Module Layout

Nominal Operating Voltages and Currents

Environmental

Test conditions:

• Detector running and stabilized for two hours, nominal settings.

• Record thermometer and humidity sensor readings:

  Sensor
  Airbox T	39.64C
  Airbox Humidity	0.96%
  Airbox Pressure	1007 hPa
  Dewpoint	-25.4C
  Chiller Flow	2.3 l/m
  Chiller Setpoint	15C

Electrical

• Document grounding scheme:  Heavy clip ground wire to power supply chassis, nothing else visible:
  
• Read/record all available voltages and currents
  
  

Performance

• Force high gain mode
• Collect 1000 darks for analysis (Conny test 1; pedestals, noise, bad pixel map)
• Force medium gain
• Collect 1k darks (C2, pedestals/offsets, noise, bad pixel map)
• Force low gain
• Collect 1k darks (C3, pedestals/offsets, noise, bad pixel map)
• Create pedestals with 'makepeds -J'

-        Offsets due to ambient visible light

• Viewports open/closed
• In-chamber lights
• Any laser sources planned

-        Mechanical

• Verify range of motion
• Verify gate non-interference gate valve operation
• Record encoder readings for position scaling

-        Assess

• If operation is nominal, move on to next block
• If time allows, vary airflow +/- 20% to check dependence
• Return gain to autoranging

1)     Beam set up (12h, full shift) (wave8 monitoring throughout)                                      (t = 0)

-        No sample (60 min)

• Set max attenuation
• Pass beam through beam pipe to check alignment, systematics and baseline scatter.
• Collect 1k frames for analysis.  Expect ~no signal.
• Set midrange attenuation
• Collect 1k frames for analysis.
• Set zero attenuation
• Collect 1k frames for analysis.

-        Assess

• If operation is nominal, move on to next block
• If time allows consider other attenuations, moving in z
• Return to max attenuation

-        Sample setting (TBD)                                                                                                               (t = 1h)

• Set z mid-range
• Attenuator scan (1.5h)
• Assess flux level.  If satisfied, continue at z-scan step.  Otherwise:
• Adjust sample jet (setting B)
• Attenuator scan (1.5h)
• Assess flux level.  If satisfied, continue at z-scan step.  Otherwise:
• Adjust sample jet (setting C)
• Attenuator scan (1.5h)
• Assuming that we’ve got a good flux level, move to z-scan

-        Set attenuator for moderate-flux level and scan in z (60 min)                                      (t = 5.5h)

• Move detector close to sample point
• Collect 1k frames for analysis
• Move detector far from sample point
• Collect 1k frames for analysis
• At this point we believe the beam/sample are well adjusted and understood, move on to commissioning signal tests.
• Re-set to mid-range in z.
• If time allows, move on to next block early.

-        High gain flats (fixed gain)                                                                                                                     (t = 6.5h)

• Set sample and choose attenuator range (30 min)
• Run attenuator scan (60min)
• Set attenuator mid-range
• Vary integration time (if this is possible) (60)
• If time allows:

                                                    i.     Vary bias +/- 20%

-         Medium gain flats (fixed gain)                                                                                                             (t = 9h)

• Set sample and choose attenuator range (30 min)
• Run attenuator scan (60min)
• Set attenuator mid-range
• Vary integration time (if this is possible) (60)
• If time allows:

                                                    i.     Vary bias +/- 20%

-        Low gain flats (fixed gain)                                                                                                                      (t = 11.5h)

• Set sample and choose attenuator range (30 min)
• Run attenuator scan (60min)
• Set attenuator mid-range
• Vary integration time (if this is possible) (60)
• If time allows:

                                                    i.     Vary bias +/- 20%

-        Full range flats (autoranging)                                                                                                               (t = 14h)

• Set sample and choose attenuator range at widest possible (30 min)
• Run attenuator scan (60min)
• Set attenuator mid-range
• Vary integration time (if this is possible) (60)
• If time allows:

                                                    i.     Vary bias +/- 20%

-        Repeat baseline tests      (3h)                                                                                                                 (t = 17h)

-        End                                                                                                                                                              (t = 20h)

Performance Measures

Pedestal

Method:  Dark environment, nominal operation, collect 1000 frames @120Hz.  Generate per-pixel mean and standard deviation over 1000 frames.  Pixels more than 3 sigma out of detector-wide mean are flagged bad.  Files archived as xxxxx.

Summary Values

Pedestal Map

Noise map

Gain and uniformity (photon source)L

Linearity (signal injection)

Thermal measurements (all thermometers)

Experiment History

Calibration Records