1. GLAST LAT Project4.1.7 July 17, 03 LAT Meeting G. Haller V41 GLAST Large Area Telescope: Electronics, Data Acquisition & Flight Software W.B.S 4.1.7 LAT meeting- V4 July 17, 03 Gunther Haller, JJ Russell haller@slac.stanford.edu (650) 926-4257 Gamma-ray Large Area Space Telescope

2. GLAST LAT Project4.1.7 July 17, 03 LAT Meeting G. Haller V42 Key Milestones, new schedule (1) TEM Pre-qual (with ASICs, everything as flight except board- material & non-flight ACTEL’s) Used for new EGSE stands Oct 1, 03 TEM Qual (flight material, flight FPGA, test of flight procurement package) Dec 1, 03 TEM, 1 st Flight (I&T AV MS was 3/15/04)June 15, 04 TEM, Last Flight (I&T AV MS was 9/24/04)Aug 15, 04 Tower Power Supply EM (new design with MAXIM DC/DC converters) Used for new EGSE stands Oct 1, 03 TPS Pre-qualNov 15, 03 TPS QualDec 15, 03 TPS, 1 st Flight (I&T AV MS was 3/15/04)June 15, 04 TPS, Last Flight (I&T AV MS was 9/24/04)Aug 15, 04 GASU EM2 (non-flight memories, FPGA’s), Used for ACD multiple FREE test Nov 1, 03 GASU Pre-qual (flight mem, non-flight FPGA’s)Feb 04 GASU QualMay 04 GASU Flight (I&T AV MS was 9/20/04)Aug 15, 04

3. GLAST LAT Project4.1.7 July 17, 03 LAT Meeting G. Haller V43 Key Milestones (2) PDU EM (non-flight FPGA)Sept 15, 03 PDU Pre-qual (non-flight FPGA’s)Feb 04 PDU Qual (flight FPGA)May 04 PDU Flight (I&T AV MS was 9/20/04)Aug 15, 04 LAT Comm Board EM (PMC Card). Used for new EGSE standsAug 30, 03 LCB EM (cPCI card) Used for DAQ Internal test-standsSept 15, 03 LCB Pre-QualFeb 04 LCB QualMay 04 LCB Flight (I&T AV MS was 9/20/04)Aug 15, 04 Storage Interface Board EM (cPCI card) Used for DAQ Internal test-stands Sept 15, 03 SIB Pre-qualFeb 04 SIB QualMay 04 SIB Flight (I&T AV MS was 9/20/04)Aug 15, 04

4. GLAST LAT Project4.1.7 July 17, 03 LAT Meeting G. Haller V44 Key Milestones (3) Crate Backplane EMSept 15, 03 CBP Pre-qualFeb 04 CBP QualMay 04 CBP Flight (I&T AV was 9/20/04)Aug 15, 04 Software EM1 (all SW to completely support TEM-based test- stand including monitoring, in addition filtering, etc) Sept 30, 03 Software EM2 (to run testbed and ACD multi-FREE, official release later) Dec 15, 03 Software FU (1 st version) April 04 Software FU (full version, official release later) Oct 04 EGSE TEM (with ASICs) test-stands ready (with EM1 FSW) Oct 1, 03 EGSE AEM GASU test-stands ready (with EM2 FSW)Dec 15, 03

5. GLAST LAT Project4.1.7 July 17, 03 LAT Meeting G. Haller V45 Main Interdependencies TEM to TKR & CAL Oct 1, 03 GASU to ACD Dec 15, 03 TKR MCM (9) with latest ASICs to Elex (non-flight fab) Sept 1, 03 TKR MCM (36 each) with cables!, first flight production batch to Elex Sept 1, 03? CAL AFEE (8 each) with flight ASICs to ElexNov 1, 03? ACD FREE (12 each) to Elex (need ACD ASICS) Nov 1, 04? Calorimeter Mini Twr (with crystals, full tower) to ElexSept 1, 03? TKR Mini Twr (with 3-X and 3-Y layers) to ElexSept 1, 03? Need to keep these and/or make additional set TKR Mini TWR does need at least 4-X, 4-Y)

6. GLAST LAT Project4.1.7 July 17, 03 LAT Meeting G. Haller V46 Flight Hardware Procurements Req’s for Omnirels, MAXIM’s, EEPROM in purchasing Writing req’s for Actels, MOSFET’s, memories, EMI filters, DC/DC hybrids

7. GLAST LAT Project4.1.7 July 17, 03 LAT Meeting G. Haller V47 Flight Hardware Manufacturing First Board to be fabricated is TEM Qual –Need by Dec 1, 03 –Package for fab and assembly must be placed by Sept 1, 03 All assembly drawings final by Aug 15, 03 Tower Power Supply Module 2 weeks behind TEM Others ~ Jan 04

8. GLAST LAT Project4.1.7 July 17, 03 LAT Meeting G. Haller V48 Engineering Model Testing Continuous testing up to commitment for flight fab (of course continuous beyond that but changes have impact) Must have full set of front-end electronics to verify DAQ hardware/software Must have CAL/TKR Mini Twr with detectors to debug/test/verify DAQ system including trigger hardware & software

9. GLAST LAT Project4.1.7 July 17, 03 LAT Meeting G. Haller V49 Open Flight Design Issues Detailed routing of wires in GASU (~3,000 wires in enclosure) New Tower Power supply circuit needs to be tested

10. GLAST LAT Project4.1.7 July 17, 03 LAT Meeting G. Haller V410 Cost/Schedule Status Pretty much on schedule (except TEM and TEM-PS, 4 weeks late, FSW is being assessed) Cost: overrun will occur in –Front-end simulator Had to be redone after move of project to SLAC –Storage interface board Added in each crate to simplify software –FSW needs more man-power –Tower Power supply cost being assessed –EGSE test-stands

11. GLAST LAT Project4.1.7 July 17, 03 LAT Meeting G. Haller V411 Issues/Concerns Concern of performance of Tower Power Supply –Need prototype to evaluate (Oct 1, 03) –Must connect to CAL and TKR tower and perform noise measurements Needs to be done by Cal and TKR system Concern that TKR and CAL will interfere with each other when integrated in TKR – CAL – TEM package (EMI/EMC) –Need detailed plan to test Who is taking care of this? Concern that DAQ HW and FSW may not have continuous access to TKR and CAL Mini TWR instrumented with detectors –Must plan for continuous access –Need more than 3-X and 3-Y layers Concern that FSW is late –Need to add promised man-power