Calibrations Accomplishments in PY03

Plans for PY04

Kurt Woschnagg, UCBKurt Woschnagg, UCBL3 lead – 1.5.3 Detector CharacterizationL3 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)

• 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

The IceCube Coordinate System

Coordinate axes:

X axis = Grid EastY axis = Grid NorthZ axis = up

(same as in AMANDA)

AMANDA origin

IceCube origin

Easting [ft] 47614.9 46500

Northing [ft] 52585.1 52200

Elevation [ft] 3608.6 2900

XIceCube [m] 339.8 0

YIceCube [m] 117.4 0

ZIceCube [m] 216.0 0

XAMANDA [m] 0 -339.8

YAMANDA [m] 0 -117.4

ZAMANDA [m] 0 -216.0

Origin:Point near geometric center of detector,defined in global coordinates(Easting, Northing, Elevation)

Document in docushare

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 DOMs17

60

59

5857

5655

54

53

52

51

5049

4847

46

45

44

19

15

19

1517

17

17

17

19

15

19

1517

17

17

DOM#

1743

d

1st A.M.

B1 B2 B4

T1

T2T4

240’’ 192’’

184’’

156’’

Surveying the 8 corners of the tower

Drill data used for hole profile

Geometry release

Geometry for 60 in-ice DOMs16 IceTop DOMs8 IceTop tanks

released Feb 24, 2005

Coordinates available from database

Each geometry releasecomes with README file

The Dust Logger

Are the dust layers horizontal?

Part II – Plans for PY04

RTFP!

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

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

1.5.3.2.4 Geometry

1. Geometry calibration of all new DOMs

• Deployment dataKurt WoschnaggChuck Rentmeesters, Jack Ambuel

• Drill dataBob Morse, Varun Gopalakrishna

• Surface surveysKurt Skoog, Tim Murray – Raytheon surveyors

• Verify DOM spacing with flasher dataNN

• Interstring geometry with flashers (Stage 2) Start in PY04• Array geometry with muons (Stage 3) Start in

PY04?

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

σi

σk

σik2 = σi

2 + σk2 + σsyst

2

emitter

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 databaseGeorges Kohnen, Philippe Herquet

• Supply calibration constants– Geometry, ice

Kurt Woschnagg– Timing, charge

Dima, Spencer, Tom

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

1.5.3.2.6 Energy and vertex resolution

11. Deploy Standard Candle; take & analyze data

UCB: design & buildIgnacio Taboada (lead)Justin Vandenbroucke, Michelangelo D’Agostino, Andres MoreyRyan Bay, Nathan Bramall, Mike SolarzKurt Woschnagg

PSL: calibrate & test

Design Standard Candle laser moduleDesign lab calibration setupBuildCalibrateTestDeploy

Most work under 1.3.1.2.3 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

Using String 18 for IceCube Calibrations

-18

1858?

AMANDA String 18 has DOMs with flashers

Put closest IceCube string (58) within 20-30 m

Use flashers to map angular acceptancebefore and after freeze-in

Learn something about hole ice

String 18 is the only AMANDA string with light sources at everymodule that can be seen by neighboring strings

Unique chance for in-iceacceptance/hole-ice calibration!