glast lat project quarterly review, aug. 14, 2001 gunther haller1 glast large area telescope:...
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![Page 1: GLAST LAT Project Quarterly Review, Aug. 14, 2001 Gunther Haller1 GLAST Large Area Telescope: Electronics, DAQ & Flight Software Gunther Haller Stanford](https://reader035.vdocuments.net/reader035/viewer/2022062421/56649d605503460f94a40fa0/html5/thumbnails/1.jpg)
GLAST LAT Project Quarterly Review, Aug. 14, 2001
Gunther Haller 1
GLAST Large Area Telescope:GLAST Large Area Telescope:
Electronics, DAQ & Flight Software
Gunther HallerStanford Linear Accelerator CenterElectronics System Engineer
Gamma-ray Large Gamma-ray Large Area Space Area Space TelescopeTelescope
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GLAST LAT Project Quarterly Review, Aug. 14, 2001
Gunther Haller 2
ContentContent
• Electronics System– Overview– Location– Architecture– Deliverables– WBS Organization
• Recent Progress• Milestones & Budget• Response to Recommendations from last Review
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GLAST LAT Project Quarterly Review, Aug. 14, 2001
Gunther Haller 3
LAT Electronics OverviewLAT Electronics Overview
• TKR, CAL & ACD Sub-System Electronics
– Amplification/shaping/digitization of detector signals
• Trigger path for fast response (2 usec trigger latency)
• Event path for trigger-selected high-resolution data readout
• Trigger & Dataflow Electronics
– Commanding and messaging of LAT electronics
– Configuration & Control of TKR, CAL, & ACD front-end electronics
– Triggering
– Event data acquisition, buffering, reconstruction and filtering
– Spacecraft interface electronics
– Instrument health monitoring
– Support for sub-system electronics development
• Power System
– Distribution, switching, conditioning, regulation of spacecraft supplied power to all LAT electronics
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GLAST LAT Project Quarterly Review, Aug. 14, 2001
Gunther Haller 4
Location of LAT Electronics Location of LAT Electronics
TKR Elex on each of the 16
towers CAL Elex on each of the 16 towers
ACD Elex on all 4 sides
• Distributed in boxes under the 16 towers (LAT shown upside-down):
– Trigger & Dataflow (DAQ) Electronics
– Power System
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GLAST LAT Project Quarterly Review, Aug. 14, 2001
Gunther Haller 5
Electronics ArchitectureElectronics Architecture
Front-End
CAL
TKR
TKR-CAL TEM
Event Processor
Units
Intercon-nection Module
Space-craft Interface
Unit
Tower
ACD ACD EM
to/from SC
Control & Processed Event Data
Event Data
Control & Processed Event Data
5 each (4+1)
2 each (1+1)
16 each (16+0)
2 each (1+1)
Front-End
* (1+1) = (1 Primary + 1 Secondary)
Monitoring Module
Distribution & GLT Assembly
Control, HSK Data
Control, Trigger, Event &
HSK Data
Global Trigger Module
2 each (1+1) Power Supply System
2 each (1+1)
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GLAST LAT Project Quarterly Review, Aug. 14, 2001
Gunther Haller 6
Trigger & Dataflow, Power ModulesTrigger & Dataflow, Power Modules
• 16 TKR-CAL Tower Electronics Modules (16 Primary + 0 Secondary)• 2 ACD Electronics Modules (1 P + 1 S)• 2 Interconnection Modules (1 P & 1 S)• 2 Global Trigger Modules (1 P & 1 S)• 5 Event-Processor Units (4 P & 1 S)
– 603e/750 Power-PC processor PCI card– Event-Processor - LAT communication PCI card– PCI Backplane
• 2 Spacecraft Interface Units (1 P & 1 S)– 603e/750 Power-PC processor PCI card– SIU - LAT communication PCI card– SIU - Spacecraft communication PCI card– PCI Backplane
• 2 LAT Monitoring Units (1 P & 1 S)• Power supplies for all modules above• Power Distribution Module (1 P & 1 S)
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GLAST LAT Project Quarterly Review, Aug. 14, 2001
Gunther Haller 7
WBS OrganizationWBS Organization
Reliab ility & QAD. Nelso nSU-SL AC
W BS 4.1.7.2
T &DF E lexG . HallerSU-SL AC
W BS 4.1.7.4/4.1.7.5
En clo su res/Harn essM .F reytagSU-SL AC
W BS 4.1.7.7/4.1.7.8
Po w er SystemD. Nelso nSU-SL AC
W BS 4.1.7.6
F lig h t So ftw areJ. Ru ssellSU-SL AC
W BS 4.1.7.9
G SE & Op eratio nS . W illiam s
SU-HE PLW BS 4.1.7.A
In stru m en t I&TG . HallerSU-SL AC
W BS 4.1.7.C
T racker E lexR. Jo h n so n
UCS CW BS 4.1.4.3.3.3
CAL E lexW .N .Jo h n so n
NRLW BS 4.1.5.7
ACD E lexJ. Orm es
G SF CW BS x.x.x
F ro n t-En d E lexG . HallerSU-SL AC
Electro n ics M an ag em en tG . HallerSU-SL AC
W BS 4.1.7.1
E lectro n ics, DAQ & F lig h t S o ftw areG . HallerSU-SL ACW BS 4.1.7
NRL
SU-HEPL
SU-SLAC
NRL
SU-HEPL
SU-SLAC
NRL
SU-SLAC
CEA-DAPNIA INFN SU-SLAC
NRL
NRL SU-HEPL SU-SLAC
NRL SU-HEPL SU-SLAC
NRL SU-HEPL SU-SLAC
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GLAST LAT Project Quarterly Review, Aug. 14, 2001
Gunther Haller 8
Recent Technical ProgressRecent Technical Progress
• Requirement Documents for
– Trigger & Dataflow System Level III
– Trigger Level IV
– Dataflow Level IV
– Power System Level III
– Power Supplies Level IV
• Design Documents for
– Overall Electronics System
– Global Trigger System
– Tower Electronics Module
– Spacecraft Interface Unit
– Grounding & Shielding (EMI)
– Mission Assurance
– Flight-Software
• All documents on web page see
– http://www.slac.stanford.edu/exp/glast/daq
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GLAST LAT Project Quarterly Review, Aug. 14, 2001
Gunther Haller 9
Recent Budget & Schedule ProgressRecent Budget & Schedule Progress
• Tasks entered to lowest level (7) in PMCS
• Resource loaded schedule
• Components organized as
– Pre-Engineering Module
– Engineering Module 1
– Engineering Module 2 (function and interface like flight-electronics but with commercial components)
– Qualification Module
– Flight Module
• Each of the modules scheduled as
– Requirements
– Conceptual Design
– Preliminary Design
– Layout, Fabrication, Assembly
– Standalone Test
– System Test
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GLAST LAT Project Quarterly Review, Aug. 14, 2001
Gunther Haller 10
MilestonesMilestones
• Trigger & Dataflow Requirements Review 03/27/01• T & DF PDR 07/16/01• Flight Software PDR 07/16/01• LAT Instrument PDR 09/25/01• Engineering Model 1 (EM1) System Test Complete 03/15/02• T&DF CDR 06/19/02• Flight Software CDR 06/12/02• LAT Instrument CDR 08/05/02• Engineering Model 2 (EM2; flight software & DAQ) System Test Complete 05/10/03• Deliver Electronics Units for Calibration Unit 05/10/03• Assemble/Test Qual Unit 07/15/03• Assemble/Test last Flight Unit 12/01/03
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GLAST LAT Project Quarterly Review, Aug. 14, 2001
Gunther Haller 11
Budget ProfileBudget Profile
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GLAST LAT Project Quarterly Review, Aug. 14, 2001
Gunther Haller 12
Recommendations from Last ReviewRecommendations from Last Review
• Additional Manpower for Flight Software– Added 2 SLAC people to work on FSW
• Rick Claus (moving to GLAST project)• Curt Brune (new hire)