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 Both used in AMANDA Specs and quotes in docushare
Paro[scientific]
m, also temp.
RS232/RS485
Temperature corrected
$6k
Keller
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. Stand-alone DAQ (laptop with RS232/485) or Integrated with drill
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: DAQ
RS232 (300 baud) → RS485 (9600 baud?)
DAQ
Integration
Data merging
Readout during freeze-in