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IceCube Deployment Monitoring System (PTS)

IceCube Deployment Monitoring System (PTS). Kurt Woschnagg, Ryan Bay UC Berkeley IceCube Collaboration Meeting, Bartol, March 2004. Requirements during deployment. How deep is the string? Is it still moving – or is it . . . s***k? Save data for post-deployment analysis.

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IceCube Deployment Monitoring System (PTS)

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  1. IceCube Deployment Monitoring System (PTS) Kurt Woschnagg, Ryan Bay UC Berkeley IceCube Collaboration Meeting, Bartol, March 2004

  2. Requirements during deployment • How deep is the string? • Is it still moving – or is it . . . s***k? • Save data for post-deployment analysis

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

  4. temperature pressure drill

  5. Pressure sensors Paro[scientific] 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

  6. Thermistors • Omega, model no. 4403x • Working range: -80 to +75 C • Resistance (100’s kΩ-MΩ) → temperature (using calibration chart) • 0.1 degree accuracy • Leads spliced to service wires, molded onto breakout Used in AMANDA Specs and quote in dosushare

  7. 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

  8. b/o 1 b/o 15 b/o 30 Stand-alone DAQ (laptop with RS232/485) or Integrated with drill monitoring system

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

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