1. Beam Test Plan 1999 P. Roger Williamson Hansen Experimental Physics Laboratory Stanford University GLAST Collaboration Meeting GSFC February 10, 1999

2. prw 2/10/99 Beam End Workstations SETS acquire hex tabular tracker histo Tornado windsh launch windview Reflective Memory Cisco 2924C-XL Fast Ethernet Switch Instrument Data Bus Counting House To Internet & Beam Control, non-event data NIM Bin Fiber-optic 100 Base FX Power Conditioner 120V AC 28V Power supply Beam Tower Beam DP HSK L1Trigger Spacecraft Simulator Command Telemetry S/C Data packet ACS Simulator GPS Position & Time Simulator Prototype Tower Tracker Calorimeter Anti-coincidence HSK L1T, L2T, L3T ESA Beam Event Data Beam Pulse REQ TTL level 50 Ω Term. Position Sensor and Control Cisco 2924C-XL Fast Ethernet Switch Stanford/HEPL Provided SLAC Provided Beam Test 1999 Components

3. prw 2/10/99 Level 1 Trigger Beam Tower –Utilize ACDREQ in L1T FPGA –Beam pulse variable delay time w.r.t. particle arrival (includes pre-trigger) –Input can be enabled or disabled by command Prototype Tower –L1T ACD CAL TKR –All inputs can be enabled or disabled

4. prw 2/10/99 Spacecraft Simulator Forward commands Forwards telemetry data packet Assembles SC data packet Attitude simulator –Reads table position controllers –Transmits simulated attitude data to towers GPS simulator –Transmits simulated position data to towers –Transmits simulated GPS time data to towers –Transmits GPS sync to towers

5. prw 2/10/99 Simulated Spacecraft Communications Cisco 2924C-XL Switch 10 or 100Mb/S twisted pair Ethernet between towers 100Base-FX fiber Ethernet uplink/downlink Simulated uplink for commands Simulated X-band downlink at 100 Mbps

6. prw 2/10/99 Run Control Enter data in web page –Boxes auto-fill –Replaces “Run Log” pages Start sends the start run command –To Spacecraft Simulator –To Beam Control Does NOT replace written logbook GLAST Run Control Run #GMT Comment Box Run data sheet info in this section (previously on paper) Add Comment (Re)Start Run Stop Run

7. prw 2/10/99 Beam Test 1999 Software Tasks Run Control input form SETS startup scripts –stripcharts –tabular displays –striptabs SETS histograms glastsim analysis interface Revitalize tjrecon, etc glastdaq –data packet definition –data acquisition –L2T –L3T –file management –watchdog timer –setup scripts beamtower –data packet definition –data acquisition –L2T –L3T