The Galileo Energetic Particles Detector

Galileo EPD Handbook

List of Figures

• Figure 1-1. Overview of pre-Challenger EPD system organization
• Figure 1-2. Galileo EPD functional block diagram
• Figure 1-3. EPD configuration, pre-Challenger and post-Challenger
• Figure 1-4. EPD detector capability summary, pre-Challenger and post-Challenger
• Figure 1-5. Cruise configuration (post-Mars)
• Figure 1-6. EPD, side view (modified post-Challenger)
• Figure 1-7. EPD, top view (modified post-Challenger)
• Figure 1-8. EPD obscuration
• Figure 1-9. Telescope protection
• Figure 1-10. Post-Challenger EPD instrument configuration and rework
• Figure 1-11. Post-Challenger EPD CMS sensor configuration
• Figure 1-12a. Detail of EPD CMS detector head (as flown).
• Figure 1-12b. Schematic cross-section of TOF system.
• Figure 1-12c. Detailed cross-section of TOF system.
• un-numbered schematic - CMS high voltage output filter
• un-numbered figure: CMS rate channel definition matrix
• Figure 1-13. (unavailable)
• Figure 1-14. (unavailable)
• Figure 1-15. (unavailable)
• Figure 1-16. CMS analog signal processing block diagram.
• Figure 1-17. CMS, new design.
• Figure 1-18. EPD TAC electronics
• Figure 1-19. Schematic of EPD TAC board.
• Figure 1-20. Output waveforms.
• Figure 1-21. TAC output vs. TOF (22° C).
• Figure 1-22. TAC output vs. TOF (-25° C, +50° C).
• Figure 1-23. Proposed configuration changes for new EPD CMS subsystem..
• Figure 1-24. Functional block diagram of analog filter board.
• Figure 1-25. CMS analog electronics chain.
• Figure 1-26. Galileo EPD signal processing.
• Figure 1-27. CMS TOF assembly, analog filter and analog electronics, pre-Challenger.
• Figure 1-28. EPD Pulse Height Analyzer block diagram.
• Figure 1-29. Baseline restorer and L.F. noise rejection threshold and zero crossing chains.
• Figure 1-30. Comparison of delay line #1 with ref. delay line (J).
• Figure 1-31. Delay lines #2 and #3.
• Figure 1-32. Block diagram of the basic closed loop threshold calibrator.
• Figure 1-33. Calibrator block diagram.
• Figure 1-34. 50% discriminator firing.
• Figure 1-35. Calibrator feedback detail.
• Figure 1-36. Low percentage discriminator firings.
• Figure 1-37. TOF vs. energy (Kt), 1992 day 343, time 00:00:00 - 13:00:00
• Figure 1-38. TOF vs. energy (Kt), 1992 day 343, time 00:00:00 - 23:55:00
• Figure 1-39. CMS TOF ion responses.
• Figure 1-40. CMS delta E ion responses.
• Figure 1-41. CMS TOF effective G factor.
• Figure 1-42. CMS prime side calibration results.
• Figure A (untitled)
• Figure B (untitled)
• Figure C (untitled)
• Figure 1-43. CMS rate tests, 1/23-27/89. Uncorrelated starts.
• Figure 1-44. Correlated starts, TACs, KTS, CH's vs. R.
• Figure 1-45. Galileo EPD/CMS KTS (3 energies) vs. R
• Figure 1-46. Energy in detector JA vs. detector KA.
• Figure 1-47. Same as Figure 1-46 but with channel boundaries added.
• (CMS passbands figures - coming soon)
• Figure 1-48. Detail of the EPD LEMMS detector head
• Figure 1-49. Overview schematic of Board I
• Figure 1-50. Pulses from the C, D, and E2 channels as measured on the engineering model.
• Figure 1-51. Channel C pulses.
• Figure 1-52. Unipolar pulse outputs from channel E1.
• Figure 1-53. 50% point on the discriminator curve on Board II.
• Figure 1-54. Noise occurrence vs. energy threshold for channel E1.
• Figure 1-55. After ringing on channel E1 after a 10 MeV pulse.
• Figure 1-56. After ringing on channel A.
• Figure 1-57. Discriminator thresholds - 50% points, channel A.
• Figure 1-58. Crosstalk on channel A.
• Figure 1-59. The geometric factors of detectors of the Galileo LEMMS sensor.
• Figure 1-60. LEMMS geometric factors
• Figures 1-61 - 1-71. Record mode rate spectra
• Figures 1-72 - 1-77. Sample energy spectra
• Figure 1-78. LEMMS subsystem analog processing
• Figure 1-79. Maximum electron detection efficiency observed at any entering angle to the opening aperture.
• Figures 1-80 - 1-84. Sample energy spectra
• Figure 1-85. Three-dimensional perspective.
• (LEMMS passbands figures - coming soon)
• Data System Figures:
  • Figures in Moore 8/3/78 memo:
    Figure 1. Galileo EPD telemetry format
    Figure 2. Galileo EPD data system
    Figure 3. Galileo EPD bus adapter
    Figure 4. CMOS accumulator hybrid
    Figure 5. 8-hybrid array
    Figure 6. 24-bit CMOS accumulator
    Figure 7. Hybrid containing 4 universal arrays
    Figure 8. RCA universal array hybrids
  • Figure 1. Timing of data-gathering procedures for one logical record (two packets) of data. From Moore 8/9/79 memo on EPD telemetry packet formats
  • Figure 1. EPD data system logarithmic data compression routine flowchart. From Moore 12/14/78 memo on EPD log-compression algorithm
  • Figures in Moore 6/25/79 memo on EPD Instrument Software Management Plan:
    Figure 2-1. EPD organizational chart (data system software)
    Figure 3-1. EPD flight software design and development flow
    Figure 3-2. EPD software development milestone schedule
    Figure 4-1. EPD flight software development manpower distribution
• Figure 2.1. (untitled)
• Figure 2.2. Hierarchical relationship between the modules within the EPD software system.
• Figures in John Townsend's Galileo EPD Archive Processor
  • Figure 1. Galileo EPD Data Processing System
  • Figure 2. EDR Structure
  • Figure 3. EPD Rate Channel Timing
  • Figure 4. EPD CMS Event Timing
  • Figure 5. EPD LEMMS Spectrum Timing
  • Figure 6. EPD Archive Structure
  • Figure 6a. EPD Record Maps
  • Figure 6b. Index File Structure
  • Figure 7. Motor Log File Structure
  • Figure 8. Command File Structure
  • Figure 9 - missing from original document
  • Figure 10. EPD Processor Major Frame Level
  • Figure 11. EDR Buffering
  • Figure 12. EDRREAD Structure
  • Figure 13. SAVAACS Structure
  • Figure 14. MOTOR91 Structure
  • Figures 15 and 16 - missing from original document
  • Figure 17. SPINEPD Structure
  • Figure 18. BLDCMS Structure
  • Figure 19. CMSOUT Structure
  • Figure 20. BLDLEMMS Structure
  • Figure 21. LEMMSEND Structure
• Figures in Ed Roelof's Rationale for EPD LGA Format
  • Figure 1. EPD LEMMS and TOF energy coverage (not reproduced here)
  • Figure 2. EPD scan segments
  • Figure 3. Roelof working diagram on PAD reconstruction from 6 and 16 sector data (not reproduced here)
  • Figure 4. (untitled)
• Figures in Steve Jaskulek's EPD SBAND Mission Software Requirements
  • Figure 1. EPD2 Record Mode Packet Header
  • Figure 2. EPD1 RT Mode Packet Header
  • Figure 3. EPD3 RRCC Mode Packet Header
  • Figure 4a. EPD2, Map1 Rate Packet Data Format
  • Figure 4b. EPD2, MAP2 Rate Packet Data Format
• Figure 2-3. Flow chart for line plot generation.
• Figure 2-4. 96047.LGA, 5/20/96, channel A0, sectors b1-b7.
• Figure 2-5. 96047.LGA, 5/20/96, channel A1, sectors a1-a8
• Figure 2-6. 96047.LGA, 5/20/96, channel A1, sectors a9-a16
• Figure 2-7. 96100.LGA, 5/20/96, channel A0, sectors b1-b7
• Figure 2-8. 96100.LGA, 5/21/96, channel A1, sectors a1-a8
• Figure 2-9. 96100.LGA, 5/21/96, channel A1, sectors a9-a16
• Figure 2-10. 96100.LGA, 5/21/96, channel A2, sectors a1-a8
• Figure 2-11. 96100.LGA, 5/21/96, channel A2, sectors a9-a16
• Figure 2-12. 96100.LGA, 5/21/96, channel A2, sectors b1-b7
• Figure 2-13. 96100.LGA, 5/21/96, channel F0, sectors b1-b7
• Figure 2-14. 96100.LGA, 5/21/96, channel F1, sectors b1-b7
• Figure 2-15. 96100.LGA, 5/21/96, channel F2, sectors b1-b7
• Figure 2-16. 96100.LGA, 5/21/96, channel F3, sectors c1-c2
• Figures in C. Brull/S. Stone LGA Processing Software for the EPD
  • Figure 1. Jovicentric Ecliptic Coordinates
  • Figure 2. Jupiter Magnetic (System III) Coordinates
  • Figure 3. Magnetic Coordinates
• Figures in Appendix A, EDR File Structure
  • Figure 5. Spacecraft Clock (SCLK)
  • Figure 1. EPD Packet
• Figures in Appendix B, SEDR Files
  • Figure 1. Magnetic Tape Layout - GSOC EDR/SEDR
  • Figure 2. Magnetic Tape Layout - JPL SEDR
  • Figure 3. SEDR File Layout
  • Figure 4. SEDR Logical Record Structure
  • Figure 5. Primary/Secondary SFDU Header Format
  • Figure 6. Tertiary SDFC Header Format
  • Figure 7. SEDR IC data block ecliptic state vectors
  • Figure 8. SEDR IC data block ranges and angles
  • Figure 9. SEDR IC data block earth centered angles
  • Figure 10. SEDR IC data block Jupiter centered angles
  • Figure 11. SEDR data block sun centered angles
• Figures in Appendix C, Magnetometer Subsystem
  • Figure 1. MAG record
  • Figure 2. MAG data block format
  • Figure 3. MAG packet
• Figures in Appendix D, AACS Position and Rate Data
  • Figure 1. AACS record
  • Figure 2. AACS data block format
  • Figure 3. Variable packet replacement memory readout
  • Figure 4. AACS position and rate data

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