P. Mokashi IES Team Meeting, SwRI 29 May 2013

IES (SwRI) Develop sequences (flight and EQM test) Develop tables, macros and patches if necessary Test on simulatorEnter on RPC wiki PIU (Imperial College, London) Coordinate between RPC instruments Integrate RPC science sequences Convert wiki sequences into RSOC / RMOC formats RSOC (ESAC, Spain) Coordinate non- interactive science activities RMOC (ESOC, Germany) Interactive and maintenance activities EQM testing Science activity uplink 2

IES (SwRI) Develop sequences Develop tables, macros and patches if necessary Test on simulator Enter observation definitions and conditions into the SGS system Modify RSGS generated command sequences PIU (Imperial College, London) Coordinate between RPC instruments RSGS (ESAC, Spain) Develop the Rosetta science planning system Generate activity timelines Generate command sequences RMOC (ESOC, Germany) Interactive and maintenance activities Science activity uplink EQM testing Coordinate pre- landing activities 3

4 Operations Planning FocusLead in time Execution Duration Skeleton Plan Trajectory & Pointing In developmentEntire Mission Long Term Planning Trajectory5 – 3 months4 months Medium Term Planning Pointing, Resources 2 months – 2 weeks 1 months Short Term Planning Commanding2 – 1 weeks1 week

 Two main subsystems ◦ Observation Management Subsystem (OBM)  Used to define instrument campaigns, observations and their associated planning, trajectory, attitude and resource characteristics and constraints ◦ Science Planning and Scheduling Subsystem (SPS)  Automated scheduling and timeline generation based on definitions, constraints and priorities using JPL’s ASPEN system  Includes spacecraft dynamics and geometry models  Will generate activity timeline and instrument commanding 5

 Features ◦ Includes monitoring campaign capability ◦ No ability to manually schedule observations ◦ The only way to get them scheduled and at desired times is by changing the criteria (duration, frequency, geometric or other model based constraints, pointing) ◦ Includes ride-along campaigns (or eventually will)  Status ◦ Concept has undergone several changes ◦ Very ambitious system and schedule ◦ Present status of some components is uncertain 6

 Would like to be on all the time (monitoring) in normal mode with some other RPC sensors  Burst mode ◦ Would like periodic burst mode operations. All operating RPC sensors would like burst mode at the same time ◦ Additional burst mode operations determined by trajectory and models, like boundary crossings  Data has to be collapsed significantly as bandwidth allocation for IES is very low, even in burst mode ◦ Select the ranges and combine counts in adjacent energy/azimiuth/elevation bins 7

 IES Operation is driven by mode tables  Each table defines ◦ Normal or burst mode ◦ Cycle length (128s, 256s, 512s, 1024s) ◦ Selection of energies for data return ◦ Collapse (sum) of counts in adjacent  Energies  Elevations  Azimuths  13 tables can be stored on board ◦ Trade time resolution vs energy resolution vs angular resolution 8

 Internal sequences – programmable series of commands separated by delta times  Can call itself (loop) so a regular continuous sequence can be setup (example – cycle between 5 hours of normal mode and 1 hour burst mode OR cycle between high energy and angular resolution tables)  8 macros stored on board of which 4 are available for customization ◦ 1 being used for gain test 9

 Gain Tests will be performed periodically to determine the nominal MCP operating voltages  How frequently?  Last gain test configuration: ◦ ~17 min at each 2525V, 2550V, 2575V, 2600V and back to nominal voltage of

 March 31 & Apr 1, 2013  Distance from earth 4.2 to 4.3 AU  OWLT: ~35 min  18 hours total with Sun in FOV for most of the time  Science data expected near real time (with light time delay) 11

Activity Estimated Time (Minutes) Low Voltage Checkout POWER ON in PROM mode 10 Expected PIU-IES Link Resets (Warn RMOC) EEPROM readout and dump PAUSE Transition to EEPROM mode (Science Mode) 10 RAM patch to generate event message indicating counts (see HV below) Frequency? Ideal desired = 1/s, Post launch commissioning = 1/32s (Discuss with RMOC) STIM PAUSE High Voltage Checkout Turn MCP high voltage on (ESA and DEF sweeping disabled) and get sum of counts using event message PAUSE HV on with ESA sweeping PAUSE HV on with DEF sweeping 15 Power OFF PAUSE

Functional Test 1 Power ON in EEPROM (Science) Mode 45 Functional test - table and mode changes (LVSCI and HVSCI) Power OFF PAUSE ELC Channel and MCP Gain Tests Power ON in PROM Mode 10 EEPROM Patch to update housekeeping fields Memory Dump Power OFF Power ON in EEPROM (Science) Mode 20 RAM Patch for ELC Noisy Channel Test Noisy ELC Channel Test - HVSCI Mode MCP Gain Test 120 Power OFF Functional Test 2 Power ON in EEPROM (Science) Mode 30 Functional test - table and mode changes Power OFF TOTAL TIME

MODE TABLES 128s256s512s1024s Name ( Normal / Burst)Solar Wind at the Comet (N)Full Coverage, Low Res (N)Solar Wind at the Comet (N)Slow Photo-electrons (N) IONS Energies202 to 5156 (Adjacent 4)Full Range + FB (Adjacent 4)25 to 5400 (Adjacent 4)Full Range + FB (Adjacent 2) Elevations0-4, 5-10, 11-15Adjacent 4Adjacent 20-1,2-4,5-7,8-10,11-13,14-15 Azimuths0,1,2,3-11,12,13,14,15 ELECTRONS Energies4 to 811 (Adjacent 4)Full Range + FB (Adjacent 4)4 to 1225 (Adjacent 3)4-811, highest (Full Res) Elevations0-4, 5-10, 11-15Adjacent 4Adjacent 2 AzimuthsAdjacent 2*Adjacent 4*Adjacent 2*0-1,2-4,5-7,8-10,12-13,14-15 Name ( Normal / Burst)Full Range, Low Res (B)Slow Photo-electrons (B)Pickup, High Res Angular (B)Solar Wind at the Comet (N) IONS EnergiesFull Range + FB (Adjacent 4)Full Range (Adjacent 2)Full Range + FB (Adjacent 4)25 to 5400 (Adjacent 3) ElevationsAdjacent 2 Full ResAdjacent 2 Azimuths0,1,2,3-11,12,13,14,15 Full ResFull res ELECTRONS EnergiesFull Range (Adjacent 4)4 to 772 (Full Res)4 to highest (Adjacent 3)4 to 811 (Adjacent 2) ElevationsAdjacent 2 Full ResAdjacent 2 AzimuthsAdjacent 2* Full Res*Adjacent 2* Name ( Normal / Burst)Solar Wind at the Comet (B) High Res Angular (B) IONS Energies202 to 5156 (Adjacent 4)4 to 4901 (Adjacent 3) Full Range + FB (Adjacent 2) ElevationsAdjacent 2 Full Res AzimuthsFull ResFull res Full Res ELECTRONS Energies4 to 3603 (Adjacent 3)4 to 811 (Adjacent 2) Full Range + FB (Adjacent 2) ElevationsAdjacent 2 Full Res AzimuthsAdjacent 2*Full res* Full Res* Name ( Normal / Burst) Pickup (B) High Res Energy (B) IONS Energies Full Range (Adjacent 2) Full Range (Full Res) Elevations Adjacent 2 Azimuths 0,1,2,3-11,12,13,14,15 Full Res ELECTRONS Energies Full Range (Adjacent 2) Full Range + FB (Full Res) Elevations Adjacent 2 Full Res Azimuths Adjacent 2*