1. Calibrations Accomplishments in PY03 Plans for PY04 Kurt Woschnagg, UCB L3 lead – 1.5.3 Detector Characterization

2. Part I – Calibrations in PY03 A P P R O V E D

3. 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)

4. 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 Stage 1 geometry calibration

5. The IceCube Coordinate System Coordinate axes: X axis = Grid East Y axis = Grid North Z axis = up (same as in AMANDA) AMANDA origin IceCube origin Easting [ft]47614.946500 Northing [ft]52585.152200 Elevation [ft]3608.62900 X IceCube [m]339.80 Y IceCube [m]117.40 Z IceCube [m]216.00 X AMANDA [m]0-339.8 Y AMANDA [m]0-117.4 Z AMANDA [m]0-216.0 Origin: Point near geometric center of detector, defined in global coordinates (Easting, Northing, Elevation) Document in docushare

6. Asinine measurements 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 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 19 15 19 15 17 19 15 19 15 17 DOM# 17 43 d 1 st A.M.

7. B1 B2 B4 T1 T2 T4 240’’ 192’’ 184’’ 156’’

8. Surveying the 8 corners of the tower

9. Drill data used for hole profile

10. 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

11. The Dust Logger

12. Are the dust layers horizontal?

13. Part II – Plans for PY04 RTFP!

14. Work Plan for PY04 1.5.3.1 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

15. Work Plan for PY04 1.5.3.2 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

16. 1.5.3.2.4 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?

17. 1.5.3.2.3 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 σiσi σkσk σ ik 2 = σ i 2 + σ k 2 + σ syst 2 emitter

18. 1.5.3.2.8 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

19. 1.5.3.2.7 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

20. 1.5.3.2.6 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 1.3.1.2.3 Special Devices

21. Why a Standard Candle? Flasher: 10 TeVStandard Candle: 100 PeV ► Cherenkov cone sculpting ► Calibrated light output ► UHE range

22. PY04 Deliverables (in prelim. work plan) 1. MoniDaemon and MoniAnalysis code releaseJul 1 2. Release of monitoring GUI and DB interfaceOct 1 3. Monitoring shifts startJan 1 4. Geometry for new in-ice and IceTop DOMsMar 15 5. Timing verified for 1 st string with muon dataJul 1 6. Timing verified for 1 st string with flasher dataMay 31 7. Charge (SPE) verified for 1 st stringJun 15 8. Sample of IceTop-tagged events with deep muonsSep 1 9. Code for energy/vertex calibration of flasher data??? 10. Dust profile and ash layers from dust logger dataMar 31

23. Using String 18 for IceCube Calibrations -18 18 58? 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!