The Galileo Energetic Particles Detector

Galileo EPD Handbook

Revised 2003-05, T. Hunt-Ward and T. P. Armstrong

Table of Contents

• Purposes of This Document and Preface
• Photos of the Energetic Particles Detector
• List of Figures
• List of Tables
• Chapter 1. Instrument Summary
  • Introduction
  • Overview and System Summary
  • Mechanical System Overview - Post-Challenger
  • Mechanical System Overview - Pre-Challenger
  • CMS Subsystem
    • Revisions Post-Challenger
    • Pre-Challenger CMS Overview
    • Analog Electronics
    • Calibrations
  • LEMMS Subsystem Overview
    • Mechanical - Geometrical Factors
      • Numerical Calculation of Three-Dimensional Electron and Proton Trajectories in the Galileo EPD LEMMS Sensor Assembly, a technical report by Y. Wu, C. McKee, and T. P. Armstrong, Dec. 1986.
      • Charged Particle Response of Magnetic Deflection System for Galileo Jupiter Orbiter, Y. Wu and T. P. Armstrong; draft of a paper later published in Nuclear Instruments and Methods in Physics Research, A265, 561, 1988.
      • EPD Geometry Factors, R. W. McEntire, EPD Science Team Meeting, March 1998.
      • Geometric Factor Calculation for the EPD LEMMS Telescope, A. Lagg, EPD Team Meeting, March 1998.
    • Electronics
    • Calibrations
    • LEMMS Passbands
  • Data System
    • Summary of Data System Information from 1992 Space Science Reviews Article
    • Galileo EPD Telemetry Format
      • R. C. Moore memo dated Aug. 3, 1978
      • R. W. McEntire memo dated Dec. 26, 1978
    • EPD Telemetry Packet Formats
      • R. C. Moore memo dated Aug. 9, 1979
      • R. C. Moore memo dated Aug. 13, 1979
    • Galileo EPD Log-Compression Algorithm
    • Galileo EPD LEMMS PHA Spectrum Log-Compression Algorithm
    • JPL Galileo Orbiter Flight Software Requirements for EPD
    • EPD Housekeeping Functions
      • R. C. Moore memo of January 24, 1979
      • R. C. Moore memo of August 26, 1979
    • EPD Command Density at Satellite Encounter
    • Servicing the Galileo EPD Rate Channel Accumulators
    • EPD Bus Commands
    • Instrument Software Management Plan
  • Stepping Motor Subsystem
  • EPD Commands
• Chapter 2. EPD Software
  • EPD Flight Software System Documentation
    • 1.0 Introduction
    • 2.0 Software System Overview
    • 3.0 Microprocessor System Overview
    • 4.0 Telemetry Formatting
    • 5.0 Rate Channel Processing
    • 6.0 Pulse Height Analyzer
    • 7.0 Housekeeping Data Processing
    • 8.0 Alarm Status Monitoring
    • 9.0 Synchronization
    • 10.0 Command Processing
    • 11.0 Scanning Motor System
    • 12.0 Autocalibrator
    • 13.0 EPD Memory Loads
  • EPDProc
    • Introduction
    • Section 1. EPD Processor Concepts and Terminology
    • Section 2. EPD Processor Inputs
    • Section 3. EPD Processor Outputs
    • Section 4. EPD Processor
  • Rational for New Format
  • New EPD Format and Implementation
  • EPD SBand Mission Software Requirements
    • Introduction
    • Software Versions
    • Science Background
    • EPD Telemetry Output Rates
    • EPD Rate Channel Data Processing
    • Telemetry Output Buffers in the EPD Memory
    • CDS Rate Channel to Bin Algorithm
    • Rate Channel Array Compression
    • CMS Pulse Height Analysis (PHA) Data
    • CDS-EPD Interface Description
    • CDS-Produced EPD Telemetry Record
    • New EPD Software Tasks
    • Telemetry Mode Change
    • Motor Control Functions
    • New EPD Command Functions
    • Transition Mode Commands
    • EPD Memory Storage Availability
    • EPD Memory Map
    • Appendix A: Buffer Storage for the EPD Rate Channel Bins
    • Appendix B: EPD Accumulator Hardware Addresses
    • Appendix C: EPD Software Patch Hook Values
    • Appendix D: EPD Telemetry Mode Definition Blocks
  • LGA Processor Status Memo
  • LGA Processing Software for the EPD
    • 1. Introduction
    • 2. LGA Processor Inputs
    • 3. LGA Processor Outputs
    • 4. LGA Processor Overview
    • 5. LGAGEN Overview
    • 6. LGA2ASCII Overview
    • Appendix A. Revisions
    • Appendix B. Coordinate Systems
    • Appendix C. Source Code
    • Appendix D. References
• Appendices
  • Appendix A. EDR File Structure
    • EPD Housekeeping Decom
    • Spacecraft Clock
    • EPD Subsystem Telemetry
    • EPD Telemetry Packet Definitions
  • Appendix B. SEDR Files
    • 1. General Description
    • 2. Interface Characteristics
    • 3. Access
    • 4. Detailed Interface Specifications
    • Appendix: Glossary
  • Appendix C. Magnetometer Subsystem
  • Appendix D. AACS Position and Rate Data
  • Appendix E. EPD File Structure
    • Description of EPD File Header Record
    • Record Header
    • Rate Block
    • CMS PHA Block
    • LEMMS PHA Block
    • Rate Calc Block
    • Binned Rate Averages

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