GLAST LAT Project November 18, 2004 I&T Two Tower IRR 1 GLAST Large Area GLAST Large Area Telescope: Telescope: Integration and Test Two Tower Integration Readiness Review SVAC Elliott Bloom I&T Manager Gamma-ray Large Gamma-ray Large Area Space Area Space Telescope Telescope
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GLAST Large Area Telescope: Integration and Test Two Tower Integration Readiness Review SVAC
Gamma-ray Large Area Space Telescope. GLAST Large Area Telescope: Integration and Test Two Tower Integration Readiness Review SVAC Elliott Bloom I&T Manager. OUTLINE. SVAC requirements Current Status of Documentation Data Taking Plans Data Processing Chain (pipeline) - PowerPoint PPT Presentation
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GLAST LAT Project November 18, 2004
I&T Two Tower IRR 1
GLAST Large Area Telescope:GLAST Large Area Telescope:
Integration and TestTwo TowerIntegration Readiness Review
SVAC
Elliott BloomI&T Manager
Gamma-ray Large Gamma-ray Large Area Space Area Space TelescopeTelescope
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OUTLINEOUTLINE
SVAC requirements
Current Status of Documentation
Data Taking Plans
Data Processing Chain (pipeline)
Data Quality Monitoring
Calibrations
Data Analysis
Future Work
Main Concerns and/or Risks
Planning
Implementation
Summary
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List of DocumentsList of DocumentsLAT DOCS Responsibility Status
LAT SVAC Plan LAT-MD-00446 SVAC releasedSVAC Plan for LAT Integration at SLAC LAT-MD-00575 SVAC releasedSVAC Contributed Manpower LAT-MD-00613 SVAC in sign off
• SVAC Plan LAT-MD-00446-06– Master Plan : Level 3– Covers pre and post launch activities
– Expect updates after transition into FSW (during I&T)
• SVAC Plan LAT-MD-00575-01– Describes implementation details : Level 4 – Covers all LAT integration at SLAC
– Baseline for integration at SLAC is already described– Expect updates after 1 and 2 tower tests (lessons learned)
– internal info» to support calibrations and data analysis» e.g. zero suppression ON/OFF, etc» Full list provided in LA-MD-00575
– Shall produce data taking configuration in time reasonably small when compared with the duration of run
– Snapshots of registers currently take ~ 1 min to be produced– rc.report (summary info)
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Data Flow – 1 hr of Cosmics Single Tower Data Flow – 1 hr of Cosmics Single Tower (1 of 2)(1 of 2)
Record dataTransfer
Data withinFirewall
Data arrivesIn SLAC farm
SVAC pipeline is launched
1 hr 20 min 5 min 10 min
Data Taking
Time is being improved by SLAC Network people.
Online Pipeline
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Data Flow – 1 hr of Cosmics single tower Data Flow – 1 hr of Cosmics single tower (2 of 2)(2 of 2)
Online Pipeline
Configuration Reportson the Web
Digi Reportson the Web
Digi Fileprocessed
Analysis Filesprocessed
Verificationof H/W settings
Analysisof reports
Data Analysis
Launch digiprocessing
Recon Reportson the Web
Recon Fileprocessed
Analysisof reports
Launch reconprocessing
15 min 10 min 20 min 15 min
10 min 360 min 20 min 15 min
10 min Hrs/weeks
Launch analysisprocesses
10 min
25 min 15 min
SVAC PipelineScheduler limited (5 min)
CPU limited (~1 GHz)
Human intervention
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SVAC ReportsSVAC Reports• The Quality Monitoring System
– uses the pipeline to automatically generate reports – Reports are uploaded to the Web – We are adding more information an a per need basis
• Report format is designed for 16 towers (no ACD yet) and works for 1, 2, …16 towers.
– Configuration Reports (parsed from online files)– CAL FLE/FHE/LAC thresholds– TKR GTRC splits– Etc
– Digitized and Reconstruction Reports (parsed from offline files)– Hit multiplicities– Number of crystals hit– Trigger bits set– Number of reconstructed tracks– etc
Code accommodates missing elements(just in case…)_
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Retrieval of Large Number of RunsRetrieval of Large Number of Runs• For massive production needed for calibration all runs must be
retrieved in a convenient format (application dependent)• The infrastructure is in place and needs to be tailored to user needs
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Data Quality – SVAC ReportsData Quality – SVAC ReportsSingle tower data
from PISA(of course not in the grid)
Single tower data from PISA
(of course not in the grid
LAT MCLAT MC
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Calibration RequirementsCalibration Requirements• Calibration delivery shall include
– Algorithms for calibrations– an executable that combines data from different runs – runs on the SLAC batch farm– reference datasets– Documentation describing usage and algorithm description– Metadata to address serial number and bay location in a grid
• SAS Calibration types are defined in the SVAC Plan LAT-MD-00446– TKR
– Dead and Noisy strips– TOT Conversion Parameter (produced by EGSE scripts)– TOT MIP Conversion (in progress)