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Calibrations Accomplishments in PY03 Plans for PY04. Kurt Woschnagg, UCB L3 lead – 1.5.3 Detector Characterization. Part I – Calibrations in PY03. APPROVED. PY03. Before Pole season: Plan Prepare pressure system drill logging dust logger During pole season:
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Calibrations Accomplishments in PY03Plans for PY04 Kurt Woschnagg, UCB L3 lead – 1.5.3 Detector Characterization
Part I – Calibrations in PY03 APPROVED
PY03 • Before Pole season: • Plan • Prepare • pressure system • drill logging • dust logger • During pole season: • Geometry for String 21 and IceTop DOMs • Dust logging (talk by Ryan Bay) • After station closing • Geometry release → database • Timing verification (talk by Dima Chirkin) • Flasher data (talk by Jim Braun)
Stage 1 geometry calibration • Deployment data • Pressure absolute depth • Asinine measurements DOM spacing • Survey • Tanks absolute (x,y,z) for IceTop DOMs/tanks • Tower absolute (x,y,z) for string • Drill data (x,y) variations for DOMs along string • Put it all together absolute (x,y,z) for DOMs • Ship to database
The IceCube Coordinate System Coordinate axes: X axis = Grid East Y axis = Grid North Z axis = up (same as in AMANDA) Origin: Point near geometric center of detector, defined in global coordinates (Easting, Northing, Elevation) Document in docushare
Asinine measurements d DOM# 43 17 44 DOM spacing (nominal: 17 m) • Laser ranger • Tape measure (metric) • Pressure data • Payout data → Two groups with 15:19:15:19 m spacing!? → All breakouts 34 m apart Cable bending around DOMs • Tape measure (metric) → negligible Well depth • Laser ranger Locations of gadgets relative DOMs 17 45 17 46 17 47 15 48 19 49 1st A.M. 15 50 19 51 17 52 17 53 17 54 17 55 15 56 19 57 15 58 19 59 17 60
T2 T4 T1 156’’ 184’’ B4 B1 B2 192’’ 240’’
Geometry release Geometry for 60 in-ice DOMs 16 IceTop DOMs 8 IceTop tanks released Feb 24, 2005 Coordinates available from database Each geometry release comes with README file
Part II – Plans for PY04 RTFP!
Work Plan for PY04 126.96.36.199 Detector Monitoring 1. Develop & implement monitoring system for in-ice & Icetop 2. Develop code for analysis, user interface, and DB interface 3. Coordinate and start shifts Ignacio Taboada, “L4” Kirill Filimonov, Andres Morey Serap Tilav (IceTop) See talk by Ignacio Taboada for details
Work Plan for PY04 188.8.131.52 Calibrations (during- and post-deployment) 1. Geometry calibration of all new DOMs 2. Verify timing for all deployed DOMs 3. Verify SPE charge calibration for all deployed DOMs 4. Develop procedure to calibrate multi-PE waveforms 5. Expand & update calibration DB for new calibrations/DOMs 6. Analyze flasher data 7. Analyze pressure data 8. Learn to use IceTop for in-ice calibrations 9. Deploy two dust loggers; analyze data 10. Support design of Standard Candle 11. Deploy Standard Candle; take & analyze data
184.108.40.206.4 Geometry 1. Geometry calibration of all new DOMs • Deployment data Kurt Woschnagg Chuck Rentmeesters, Jack Ambuel • Drill data Bob Morse, Varun Gopalakrishna • Surface surveys Kurt Skoog, Tim Murray – Raytheon surveyors • Verify DOM spacing with flasher data NN • Interstring geometry with flashers (Stage 2) Start in PY04 • Array geometry with muons (Stage 3) Start in PY04?
220.127.116.11.3 Verification of timing calibration 2. Verify timing for all deployed DOMs • Various test (see talk by Dima) Dima Chirkin, Spencer Klein, Tom McCauley • Flasher data: • Look at time differences for neighboring DOM pairs • Take data with all flashers (except top two) on string • Extract time resolutions for individual DOMs Michelangelo D’Agostino Chris Wendt, Jim Braun σi σik2 = σi2 + σk2 + σsyst2 σk emitter
18.104.22.168.8 Interface to calibration database 5. Expand & update calibration DB for new calibrations/DOMs • Database exists • First user test successful: geometry →DB→ • Maintain database Georges Kohnen, Philippe Herquet • Supply calibration constants • Geometry, ice Kurt Woschnagg • Timing, charge Dima, Spencer, Tom
22.214.171.124.7 Ice Properties 9. Deploy two dust loggers; analyze data Ryan Bay, Nathan Bramall, Mike Solarz Kurt Woschnagg, Buford Price Build two new dust loggers Deploy dust loggers Acquire data during deployment Analyze data: dust profile (fingerprinting), ash layers, volcanoes
126.96.36.199.6 Energy and vertex resolution 11. Deploy Standard Candle; take & analyze data UCB: design & build Ignacio Taboada (lead) Justin Vandenbroucke, Michelangelo D’Agostino, Andres Morey Ryan Bay, Nathan Bramall, Mike Solarz Kurt Woschnagg PSL: calibrate & test Design Standard Candle laser module Design lab calibration setup Build Calibrate Test Deploy Most work under 188.8.131.52.3 Special Devices
Why a Standard Candle? Flasher: 10 TeV Standard Candle: 100 PeV ► Cherenkov cone sculpting ► Calibrated light output ► UHE range
PY04 Deliverables (in prelim. work plan) 1. MoniDaemon and MoniAnalysis code release Jul 1 2. Release of monitoring GUI and DB interface Oct 1 3. Monitoring shifts start Jan 1 4. Geometry for new in-ice and IceTop DOMs Mar 15 5. Timing verified for 1st string with muon data Jul 1 6. Timing verified for 1st string with flasher data May 31 7. Charge (SPE) verified for 1st string Jun 15 8. Sample of IceTop-tagged events with deep muons Sep 1 9. Code for energy/vertex calibration of flasher data ??? 10. Dust profile and ash layers from dust logger data Mar 31
-18 Using String 18 for IceCube Calibrations AMANDA String 18 has DOMs with flashers Put closest IceCube string (58) within 20-30 m Use flashers to map angular acceptance before and after freeze-in Learn something about hole ice String 18 is the only AMANDA string with light sources at every module that can be seen by neighboring strings Unique chance for in-ice acceptance/hole-ice calibration! 18 58?