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Deployment Monitoring & Drill Logging (offline) at Pole

Deployment Monitoring & Drill Logging (offline) at Pole. Kurt Woschnagg IceCube collaboration meeting, Berkeley, March 2005. Some more about. Drill logging in 04/05 season. The plan Monitor drilling, hole quality Produce hole profile for string geometry What was done

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Deployment Monitoring & Drill Logging (offline) at Pole

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  1. Deployment Monitoring&Drill Logging (offline) at Pole Kurt Woschnagg IceCube collaboration meeting, Berkeley, March 2005

  2. Some more about Drill logging in 04/05 season • The plan • Monitor drilling, hole quality • Produce hole profile for string geometry • What was done • Drill data transferred to public disk in 5 min chunks • Real-time logging analysis in North… • Bob Morse, Varun Gopalakrishna at UW (Bob’s talk) • Jack Ambuel, Bruce Koci, others • Example: hole profile (x, y) • …and at Pole • Cindy Mackenzie: data transfer • KW: logging, analysis • Communication: web, email, phone • Example 1: web based drill depth/speed info (Steffen Richter) • Example 2: caliper data for final go • Logging and analysis scripts run in both places

  3. Hole profile (x, y) for geometry

  4. From the archives: Actual plot used in final go/no-go decision Drilling (down) hole diameter [cm] depth [m] hole diameter [cm] Ream (up) depth [m]

  5. Suggestions for Next Season • Faster codes (perl instead of java) • Integrate into drill monitoring • …also keep independent • Crucial for cross-checks • Define standard plots • Define procedure & plots for hole hand-over • Bob M to Pole!

  6. Deployment Monitoring 2435.8 m Paro1 (pressure, temp) 1 Readout (Data Deployment Box): Jack Ambuel, PSL Monitoring system (chucknet): Chuck Rentmeesters, UW Cables/breakouts/connectors: Jim Baccus, UW Harold Mattison, PSL Sensors: Michael Solarz, UCB Pole support: Mark Thoma Steffen Richter Data transfer: Cindy Mackenzie, UW Thermistor (temp) Keller (pressure) 29 39 Thermistors (temp) not read out during deployment 47 55 Paro2 (pressure, temp) 59 60 dust logger

  7. Project Phase Transition Management- dense Physics dominated

  8. Water Compressibility Correction The compressibility of pure water is tiny, κ0 = 3.4456e-6 (PSI)-1 but not negligible in a 2500 m hole! Slightly higher for aerated water. Use depth difference between Paros to fit effective compressibility: κ = 3.78e-6 (PSI)-1 Then (after integration): depth[m] = C/(Dκ)·(exp(- κP0)-exp(- κP)) P,P0 in PSI D = 0.99987 g/cm3; C = 0.7030696 Not implemented in monitoring system, so final depth is 2435.8 m (not 2450.8)

  9. Deployment Monitoring Monitored during deployment: Depth (bottom DOM) from pressure sensors - Paro1 - Paro2 - Keller Pressure differences - Paro2-Paro1 - Paro2-Keller - Paro1-Keller Payout Drop speed Well depth (by hand, with laser ranger) Monitored during freeze-in: Pressures (x3) Temperatures (x3) 1 29 39 47 55 59 60

  10. A typical Paro pressure profile in AMANDA Water frozen at Paro - Oil column volume fixed Density of oil column changes with temperature Freeze-in begins Pressure build-up when hole closed off at OM – pressure release when water breaks through drop Total pressure release corresponds to change in density between water and ice deployment

  11. Freeze-in Monitoring Paro1 (pressure, temp) 1 Thermistor (temp) Keller (pressure) 29 39 47 55 Paro2 (pressure, temp) 59 60

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