IceCube Deployment Monitoring System (PTS)

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IceCube Deployment Monitoring System (PTS)

• Kurt Woschnagg, Ryan Bay
• UC Berkeley
• IceCube Collaboration Meeting, Bartol, March 2004

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Requirements during deployment

• How deep is the string?
• Is it still moving
• or is it . . . sk?
• Save data for post-deployment analysis

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Post-deployment requirements

• Analyze data
• drop speed
• deployment speed
• string stretching
• Monitor freeze-in (p, T)
• Ambient temperature profile

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temperature
pressure
drill
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Pressure sensors
Paroscientific 0-4000 m, also
temp. RS232/RS485 Temperature corrected 6k
Keller 0-2600 m (formerly 2000 m) Needs
temperature correction Calibration curves
supplied 0.7k

• Both used in AMANDA
• Specs and quotes in docushare

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Thermistors

• Omega, model no. 4403x
• Working range -80 to 75 C
• Resistance (100s kO-MO) ? temperature (using
  calibration chart)
• 0.1 degree accuracy
• Leads spliced to service wires,
  molded onto breakout

Used in AMANDA Specs and quote in dosushare
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Cable considerations

• Use DOM breakout locations
• Paro 4 wires (2 pairs), slipring
• Keller 2 pairs, slipring
• Thermistors 1 pair
• All strings
• Paro at bottom (breakout 30)
• Keller (thermistor?) at 1900 m (b/o 15)
• First 4 strings
• Additional Paro at top of instrumented section
  (b/o 1), using LC quad
• Four thermistors in bottom 400 m
• Surface cable no wires needed for pressure
  sensors

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b/o 1 b/o 15 b/o 30
Stand-alone DAQ (laptop with RS232/485) or Integra
ted with drill monitoring system
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Issues

• Responsibilities
• Paro readout rate
• RS232 (300 baud) ? RS485 (9600 baud?)
• DAQ
• Integration
• Data merging
• Readout during freeze-in