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Calorimeter Wiki Web Space

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titleCAL

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Data Monitoring
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Crystal recon needs status bits to document failures, exceptional configurations, and exceptional status of the xtal energy and position reconstruction.  This work began with the July 2010 channel failure, but it has continued for Pass 8.  See ?Crystal Recon Design Description XtalRec for details.

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- Recon needs to contain code to mitigate against electronic or optical failures in CAL.

See CAL July 2010 channel failure for a first example and its mitigation.  (info)  Note that this page is preserved for documentation only.  The Pass 8 definition and functionality of failure mitigation is defined in the ?Crystal Recon Design Description XtalRec page.

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- I (Grove) have sent around a number of email messages about  ?CAL Data Monitoring. I've tried to collect them in confluence at [CAL Data Monitoring|CAL:CAL Data Monitoring] so they're more readily accessible in the future.

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titleCAL Integration and Test
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Date

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Name

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Summary

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3/06/2005

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Eric Grove

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Discarded Events

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3/06/2005

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Eric/Fred

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Actions on trending

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4/11/2005

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Eric

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Database access

- Acceptance Test Data Package of CAL flight modules

|| Date || Name || Summary ||
| 06/07/2004 (Instrument Analysis Workshop #1) | A. Chekhtman | Calibration of energy and position measurement in CAL |
| 09/27/2004 (Instrument Analysis Workshop #2) | M. Strickman | How Does Calibration Flow Through the New Single CDE CalRecon and CalDigi? |
| 09/27/2004 (Instrument Analysis Workshop #2) | E. Grove | CAL Calibration Data Sources During Assembly, Integration and Test |
| 09/27/2004 (Instrument Analysis Workshop #2) | A. Chekhtman | CAL crosstalk issues and their Implications |
| 09/27/2004 (Instrument Analysis Workshop #2) | B. Lott | Imaging crystals with TKR |
| 09/27/2004 (Instrument Analysis Workshop #2) | A. Makeev | Light collection non-uniformity near the end of crystal |
| 03/10/2005 (Instrument Analysis Workshop #3) | Z. Fewtrell | CAL Calibration Software |
| 03/10/2005 (Instrument Analysis Workshop #3) | D. Smith | Recon at the Single Crystal Level |
| 03/10/2005 (Instrument Analysis Workshop #3) | B. Lott | A first glance at the Tkr + Cal data |
| 07/14/2005 (Instrument Analysis Workshop #4) | D. Smith | Stability of the CAL Calibrations |
| 07/14/2005 (Instrument Analysis Workshop #4) | A. Chekhtman | Shaped Digital Readout Noise in CAL |
| 07/14/2005 (Instrument Analysis Workshop #4) | E. Nuss | TKR tracks, CAL tracks and Crystal Maps |
| 07/14/2005 (Instrument Analysis Workshop #4) | Z. Fewtrell | GLAST Calorimeter Crystal Position Measurement |
| 07/15/2005 (Instrument Analysis Workshop #4) | A. Chekhtman | Summary of Current Understanding of CAL Retriggering |
| 08/29/2005 (Instrument Analysis Workshop #5) | F. Piron / E. Nuss | Comprehensive review of CAL calibrations |
| 02/24/2006 | F. Piron / E. Nuss | 24 Feb 06 Trending Report |
| 02/27/2006 (Instrument Analysis Workshop #6) | D. Smith | Testing some CAL Specs |
| 02/27/2006 (Instrument Analysis Workshop #6) | F. Piron / E. Nuss | Trending CAL performance and mapping crystals |
| 02/27/2006 (Instrument Analysis Workshop #6) | A. Chekhtman | CAL Features and Idiosyncrasies |
| 02/28/2006 (Instrument Analysis Workshop #6) | J. Dai | CAL LE trigger behavior for short and long track events |
| 02/28/2006 (Instrument Analysis Workshop #6) | E. do Couto e Silva | Testing CAL LE and CAL HE triggers with muons and photons |
| 02/28/2006 | B. Giebels | Range selections in B30 |
| 03/29/2006 | B. Giebels | LAT701 Run |
Papers:
- 207th AAS (Jan 2006): "Production, Calibration and Environmental testing of the GLAST/LAT CsI Calorimeter Flight Modules" (poster)
- 1st GLAST Symposium (Feb 2007): "Performance of the Calorimeter of the GLAST Large Area Telescope" (poster, proceedings)

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3/25/2005

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Sacha/Pol

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CAL in LAT Calibration Unit
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- Beam Test 2006 and CAL calibrations

|| Date || Name || Summary ||
| 11/14/2006 (Beam Test Workshop #4) | P. Bruel | Update on calorimeter studies |
| 11/14/2006 (Beam Test Workshop #4) | B. Lott | Longitudinal profiles |
| 11/14/2006 (Beam Test Workshop #4) | A. Chekhtman | Status of CAL calibration |
| 11/14/2006 (Beam Test Workshop #4) | B. Giebels | Calibration with pions in SPS |
| 11/15/2006 (Beam Test Workshop #4) | J. Conrad | Update on CAL FHE study |
| 03/27/2007 (LAT collaboration meeting - GSFC) | P. Bruel | Beam tests and Energy measurement |
| 03/27/2007 (LAT collaboration meeting - GSFC) | A. Chekhtman | Lessons learned from CAL calibrations
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- ISOC Calibration Sequence Page|| Date || Name

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Summary

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3/06/2005

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Zach Fewtrell

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Operation of Ideal gains

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4/11/2005

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Mark Strickman

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CalRecon and Digi Ideal Calibration Mode

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3/25/2005

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Berrie Giebels

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Recon Algs extensions

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3/09/2005

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David Chamont

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How to try Fuzzy Clustering

|| Summary ||
| 07/15/2005 (Instrument Analysis Workshop #4) | B. Lott | News Flash from Darmstadt |
| 10/17/2005 | M. Strickman | 17 Oct 05 GCR Meeting Notes |
| 11/02/2005 | M. Strickman | 2 Nov 05 GCR Meeting Notes |
| 11/16/2005 | M. Strickman | 16 Nov 05 GCR Meeting Notes |
| 12/07/2005 | M. Strickman | GCR Calibration Flow |
| 12/07/2005 | M. Strickman | 7 Dec 05 GCR Meeting Notes |
| 12/14/2005 | M. Strickman | 14 Dec 05 GCR Meeting Notes |
| 01/20/2006 | C. Lavalley | GCR Calibration s/w Specifications |
| 01/10/2006 | M. Strickman | 10 Jan 06 GCR Meeting Notes |
| 01/24/2006 | M. Strickman | 25 Jan 06 GCR Meeting Notes |
| 02/01/2006 | M. Strickman | 01 Feb 06 GCR Meeting Notes |
| 02/28/2006 (Instrument Analysis Workshop #6) | M. Strickman | Calibrating the CAL in Flight: Galactic Cosmic Ray Calibration |
| 03/01/2006 | M. Strickman | Feb 06 IA Wrkshp-DC2 Kickoff GCR Calib Notes |
| 03/09/2006 | M. Strickman | Sasha Inflight Calibration Additions |
| 03/29/2006 | M. Strickman | 29 Mar 06 GCR Meeting Notes |
| 04/11/2006 | M. Strickman | 11 Apr 06 NRL-OSU GCR Filter Telecon |
| 04/12/2006 | M. Strickman | GLEAM Particle ID Notes |
| 04/12/2006 | M. Strickman | 12 Apr 06 GCR Calib Meeting Notes |
| 05/03/2006 | M. Strickman | 3 May 06 GCR Meeting Notes |
| 05/17/2006 | M. Strickman | 17 May 06 GCR Meeting Notes |
| 06/21/2006 | M. Strickman | 21 June 06 GCR Meeting Notes |
| 09/21/2006 | M. Strickman | 21 Sept 06 GCR Meeting Notes |
| 09/25/2006 (C&A meeting) | M. Strickman | GCRCalib status |
| 10/04/2006 (core s/w meeting) | C. Lavalley | GCRCalib package status |
| 10/10/2006 | F. Piron | 10 Oct 06 GCR Meeting Notes |
| 10/24/2006 | F. Piron | 24 Oct 06 GCR Meeting Notes |
| 11/07/2006 | F. Piron | 7 Nov 06 GCR Meeting Notes |
| 11/21/2006 | F. Piron | 21 Nov 06 GCR Meeting Notes |
| 01/31/2007 | F. Piron | 31 Jan 07 GCR Meeting Notes |
| 03/28/2007 | F. Piron | 28 Mar 07 GCR F2F Meeting Notes |
| 05/22/2007 | F. Piron | 22 May 07 GCR Meeting Notes |
| 06/12/2007 | M. Strickman | 12 June 07 GCR Meeting Notes |
| 06/26/2007 | M. Strickman | 26 June 07 GCR Meeting Notes |
| 07/24/2007 | M. Strickman | 24 July 07 GCR Meeting Notes |
| 08/03/2007 (LAT collaboration meeting - SLAC) | A. Chekhtman | CAL thresholds calibration on orbit |
| 08/03/2007 (LAT collaboration meeting - SLAC) | F. Piron | CAL energy scale calibration (using GCRCalib) |
| 08/28/2007 | F. Piron | 28 Aug 07 GCR Meeting Notes |
| 09/25/2007 | M. Strickman | 25 Sept 07 GCR Meeting Notes |
| 10/09/2007 | M. Strickman | 9 Oct 07 GCR Meeting Notes |
| 10/23/2007 | M. Strickman | 23 Oct 07 GCR Meeting Notes |
| 11/06/2007 | M. Strickman | 6 Nov 07 GCR Meeting Notes |
| 12/04/2007 | M. Strickman | 4 Dec 07 GCR Meeting Notes |
| 01/15/2008 | M. Strickman | 15 Jan 08 GCR Meeting Notes |
| 01/29/2008 | M. Strickman | 29 Jan 08 GCR Meeting Notes |
| 02/12/2008 | M. Strickman | 12 Feb 08 GCR Meeting Notes |
| 02/19/2008 | M. Strickman | 19 Feb 08 GCR Programmer Meeting Notes |
| 02/26/2008 | M. Strickman | 26 Feb 08 GCR Meeting Notes |
| 03/04/2008 | | 04 Mar 08 GCR Meeting Notes |
| 03/09/2008 (Ops Sim 2) | F. Piron | CAL GCR calibration |
| 03/18/2008 | M. Strickman | 18 Mar 08 GCR Meeting Notes |
| 03/25/2008 | | 25 Mar 08 GCR Meeting Notes |
| 04/01/2008 | | 01 Apr 08 GCR Meeting Notes |
| 04/08/2008 | | 08 Apr 08 GCR Meeting Notes |
| 04/15/2008 | | 15 Apr 08 GCR Meeting Notes |
| 04/22/2008 | | 22 Apr 08 GCR Meeting Notes |
| 04/29/2008 | | 29 Apr 08 GCR Meeting Notes |
| 05/06/2008 | | 06 May 08 GCR Meeting Notes |
| 05/20/2008 | M. Strickman | 20 May 08 GCR Meeting Notes |
| 05/28/2008 | M. Strickman | 28 May 08 GCR Meeting Notes |

06/10/2008
* Zach: Final stages of producing initial flight calibrations including crosstalk corrections, etc.
* Fred: Working on L&EO timeline for calibration. Redoing ion rate plots layer by layer
* Berrie: Berrie, David, Zach, Sasha working on adapting David's LAC calibration model for NomSciOps data - about done. Next is FLE
* Elliott: Yvonne needs to redo energy deposit study vs angle, energy with new MC (including LPM, etc)

06/17/2008
* Berrie points out that being able to "join" AFEE temps and other calibration information would be desirable. He will look into this @ SLAC
* Fred will submit sims to Zach's requirement to SLAC or Lyon pipeline
* Fred asks who is responsible for validating filter performance during L&EO? Fred will send a note to Richard Hughes and Eric Grove about this

06/24/2008
* Simulations for proton/interrange testing
* Status
** Zach
*** knee deep in proton interrange calibration code
**** currently building new app utilizing existing Muon & GCR calib code
**** Took some work, but now we have appropriate simulation code - intend to run existing GCR calib code on the new sim.
** Sasha
** Fred
** Berrie
** Philippe ftp://ftp-glast.slac.stanford.edu/glast.u33/bruel/mipcalibration/
** Others

07/01/08
* Summaries of analyses and plans for the next week

Calorimeter
* Protons and ions in calibOps data (Fred)
* LAC and Pedestals, run 0236511638 , New pedestals validation - David S.
** first look at CAL charge injection run 236331283 - calibGen_flt Sasha,
* Zach
** initial analysis & delivery of FLE/FHE calibration for SciOps data
** calibration of ULD thrsholds, yet to be delivered, looks ok so far
** calibGen (IntNonlin) analysis, ongoing
* Berrie
* Philippe
* Elliott
* Others

* Proton/Interrange vs GCR

07/15/08
Status and Plans:
* Sasha
** CAL proton energy scale calibration (LE diodes only)
** CAL complete proton/interrange energy scale calibration
** pointing mode temperature pedestal drift
** CAL pedestals drift at stable AFEE temperature
** CAL thresholds calibration on orbit
** explanation of event excess at low GemDeltaEventTime
* Zach
* MIP proton peak in calibOps_eng10ps25 runs (Fred)
* Monitoring the CAL with Data Quality Monitoring pages (Veronique)
* Philippe
* Elliott, etc
* Berrie, etc

07/22/08

Status and Plans:
* Sasha
* Zach
* Fred
* Berrie
* Philippe
* Others

07/29/08

Status and Plans:
* Sasha
* Zach
* Carbon events and ACD top tiles (Fred)
* A closer look at the carbon peak (Fred)
* Berrie
* Philippe
* Others

08/05/08
* Sasha - Update on position measurement
* Zach
** currently working on calibGenCAL GCR, adding asymmetry calibration to GCR code
** still pushing TriggerAlg updates through GR CCB
** intNonlin analisys, nomSciOps trigger threshold fitting on back burner
* Fred
* Luca, etc - CAL data monitoring discussion
* Berrie
* Philippe
* Others

08/12/08
* Sasha
** recommendations on CAL monitoring plots
* Zach
* Fred
* Luca, etc (CAL monitoring follow-up)
* Berrie
* Philippe
* Others

08.26.08
* Sasha
** Asymmetry calibration
* Andrey
** Status of new GCR simulations with MC truth info
* Berrie
** LAC monitoring with DQM plots
* Fred
* Others

09.02.08
* Sasha
* Zach
* Andrey
** Status of new GCR simulations with MC truth info
* Fred
* Berrie,David

* Others

09.30.08
* Sasha
* Andrey
* Fred
* Berrie,David
** LAC,FLE,FHE monitoring
* Others
* NOTES
** Berrie et. al. will do long term monitoring of threshold and LAC settings
** Fred et. al. will do energy calibration monitoring using GCR
** Suggestion that monitoring processes highlight new outliers
** In GCR monitoring, we need to determine correct tradeoff between peak width (i.e. more stringent cuts) and statistics (less stringent cuts)
** Sasha will be Zach's replacement as contact for threshold settings questions, deliveries, etc.

10.07.08
* Sasha
** Status of discrepancy between on-board and off-line energy
** Status of implementation of on-orbit calibration in pipeline
** Possible collaboration with Russian groups for further beam calibrations
* Andrey
* Fred
** GCRCalib in GR system tests: number of hits and path-length, pseudo Z
* Berrie,David LACLAC_zoomFLE, FHE
* Others

10.21.08
* Sasha
* Andrey
* Fred
* Berrie,David
* Others

11.04.08
* Sasha
* Andrey
* Fred: introduction on CAL calibration monitoring with GCRs
* Berrie,David LAC,FLE,FHE and now PED monitoring
* Yvonne ppt|^BeamTest Analysis Update 102308.ppt|||\
* Others

11.18.08
* Sasha
* Andrey
* Fred
* Berrie,David
* Yvonne high_energy_electrons_ppt
* Others

12.02.08
* Sasha
* Andrey
* Fred
* Berrie,David
* Yvonne, etc.
* Others

01.27.09
* Sasha
* Andrey
* Fred: new text and plots (fig1, fig2) for the LAT on-orbit calibration paper
* Berrie,David monitoring plots update
* Yvonne, etc.
* Others

02.10.09
* Sasha
* Andrey
* Berrie,David, ped deviation
* Yvonne, etc.
* Others

02.24.09
* Sasha
* Andrey
* Berrie,David
* Yvonne, etc.
* Others

03.10.09

  • Sasha
  • Andrey
  • Berrie,David
  • Yvonne, etc.
  • Others

03.24.09

04.21.09

05.05.09

28 July 09

  • Sasha
    • Status of LCI acquisition and analysis
    • Status of large-angle CR calibration analysis
  • AOB?

17 November 09

29 December 09

Papers:

  • D. Bederede et al., "Performance of the CsI(Tl) detector element of the GLAT calorimeter", NIM A 518, 15-18 (2004)
  • O. Ferreira et al., "Environmental tests of the GLAST validation module calorimeter", NIM A 530, 323-329 (2004)
  • B. Lott et al., for the GLAST collaboration, "Response of the GLAST LAT calorimeter to relativistic heavy ions", NIM A 560, 395 (2006) (pdf)
  • 1st GLAST Symposium (Feb 2007): "Heavy ion beam tests for the preparation of the LAT on-orbit calibration" (poster)
  • ICRC Conference (July 2007): "In-flight calibration of the GLAST Large Area Telescope calorimeter" (poster pdf, ppt, proceedings)

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titleL&EO Meetings
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|| Date || Link ||

06.28.2008

EVO meeting

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titleCAL Energy Reconstruction Methods
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|| Date || Name || Summary ||

03/25/2005

B. Giebels

Recon Algs extensions

10/17/2005 (note)

P. Bruel

Energy reconstruction at high energy with the LAT

02/09/2006 (note)

P. d'Avezac

A Maximum-Likelihood Energy Reconstruction Method

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titleCAL Mip Finder
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|| Date || Name || Summary ||

08/08/2005 (C&A meeting)

F. Piron

CAL Mip Finder (update)

06/29/2006 (Beam Test Workshop #3)

F. Piron

CAL Mip Finder and residual background rejection

11/15/2006 (Beam Test Workshop #4)

F. Piron

Validation of CAL Mip Finder algorithm with CERN / PS proton data

03/26/2007 (LAT collaboration meeting - GSFC)

S. Guiriec

Mip Finder: Performances and Proton Rejection

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titleUseful Tips
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|| Date || Name || Summary ||

03/06/2005

Z. Fewtrell

Operation of Ideal gains

03/09/2005

D. Chamont

How to try Fuzzy Clustering

04/11/2005

M. Strickman

CalRecon and Digi Ideal Calibration Mode

11/05/2007

Z.Fewtrell

CalTuple documentation

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|| Date

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|| Summary ||

707/19/2005

David D. Chamont

Pre-DC2 Refactoring Proposal

707/19/2005

Tracy T. Usher

Cal Restructuring Action Items

505/04/2005

Tracy T. Usher

CalRecon Data

303/09/2005

David D. Chamont

CalRecon Algorithms

404/13/2005

David D. Chamont

CalRecon Validation Script

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