IceCube Deployment Monitoring System (PTS)
description
Transcript of IceCube Deployment Monitoring System (PTS)
IceCube IceCube Deployment Monitoring Deployment Monitoring
System (PTS)System (PTS)
Kurt Woschnagg, Ryan BayKurt Woschnagg, Ryan Bay
UC BerkeleyUC Berkeley
IceCube Collaboration Meeting, Bartol, March IceCube Collaboration Meeting, Bartol, March 20042004
Requirements during deploymentRequirements during deployment
How deep is the How deep is the string?string?
Is it still moving –Is it still moving –
or is it . . . s***k?or is it . . . s***k? Save data for post-Save data for post-
deployment analysisdeployment analysis
Post-deployment requirementsPost-deployment requirements Analyze data:Analyze data:
drop speeddrop speed deployment speed deployment speed string stretchingstring stretching
Monitor freeze-in (p, T)Monitor freeze-in (p, T)
Ambient temperature profileAmbient temperature profile
drill
pressure
temperature
Pressure sensorsPressure sensors
Paro[scientific]0-4000 m, also temp.RS232/RS485Temperature corrected$6k
Keller0-2600 m (formerly 2000 m)Needs temperature correctionCalibration curves supplied$0.7k
• Both used in AMANDA• Specs and quotes in docushare
ThermistorsThermistors Omega, model no. 4403xOmega, model no. 4403x Working range: -80 to +75 CWorking range: -80 to +75 C Resistance (100’s kResistance (100’s kΩΩ-M-MΩΩ) ) → → temperature (using temperature (using
calibration chart)calibration chart) 0.1 degree accuracy0.1 degree accuracy Leads spliced to service wires, Leads spliced to service wires,
molded onto breakoutmolded onto breakout
Used in AMANDASpecs and quote in dosushare
Cable considerationsCable considerations Use DOM breakout locationsUse DOM breakout locations Paro: 4 wires (=2 pairs), slipringParo: 4 wires (=2 pairs), slipring Keller: 2 pairs, slipringKeller: 2 pairs, slipring Thermistors: 1 pairThermistors: 1 pair All strings: All strings:
Paro at bottom (breakout 30)Paro at bottom (breakout 30) Keller (+thermistor?) at ~1900 m (b/o 15)Keller (+thermistor?) at ~1900 m (b/o 15)
First 4 strings: First 4 strings: Additional Paro at top of instrumented section (b/o 1), Additional Paro at top of instrumented section (b/o 1),
using LC quadusing LC quad Four thermistors in bottom 400 mFour thermistors in bottom 400 m
Surface cable: no wires needed for pressure Surface cable: no wires needed for pressure sensorssensors
Stand-alone DAQ(laptop with RS232/485)
orIntegrated with drillmonitoring system
b/o 1
b/o 15
b/o 30
IssuesIssues
ResponsibilitiesResponsibilities Paro readout rate:Paro readout rate:
RS232 (300 baud) RS232 (300 baud) →→ RS485 (9600 baud?) RS485 (9600 baud?) DAQDAQ
IntegrationIntegration Data mergingData merging
Readout during freeze-inReadout during freeze-in