CRa TER Data Products Production Pipeline Larry Kepko

CRa. TER Data Products & Production Pipeline Larry Kepko Boston University Center for Space Physics CRa. TER PDR Cosmic RAy Telescope for the Effects of Radiation

Calibration o By exposing the detectors to beams of known Current From Detector energies, we can determine the response. Energy of Incident Particle Cosmic RAy Telescope for the Effects of Radiation

Calibration o We will calibrate the detectors at 3 different beam facilities, each with different energy ranges and species. • Timetable TBD o Spot-checking Cosmic RAy Telescope for the Effects of Radiation

Calibration o 88” Cyclotron, Lawrence Berkeley National Laboratory Facility LIIF HIIF Beam Properties 9 -55 Me. V H 19 or 32. 5 Me. V/nucleon He to Ne 4. 5 Me. V/nucleon He to Bi 10 Me. V/nucleon B to Xe 14. 5 -16 Me. V/nucleon C to Xe Cosmic RAy Telescope for the Effects of Radiation

Calibration o NASA Space Radiation Laboratory at Brookhaven National Laboratory Facility Beam Properties Booster up to 1 Ge. V H Booster up to 1 Ge. V/nucleon Fe Cosmic RAy Telescope for the Effects of Radiation

Calibration o Indiana University Facility IUCF Beam Properties 30 - 200 Me. V Cosmic RAy Telescope for the Effects of Radiation H

CRa. TER Data Products Description Level 0 Unprocessed instrument data (pulse height at each detector), secondary science (discarded events), housekeeping. Level 1 Science data depacketed, 1 -s resolution. Ancillary data pulled in (spacecraft attitude, calibration files, etc) Level 2 Pulse heights converted into energy deposited in each detector. Calculation of Si LET spectra. Level 3 Separate out magnetotail, foreshock and ‘GCR’ data. Level 4 Calculation of TEP LET, incident energies and particle flux. Pull in GCR data from other spacecraft (e. g. ACE). Cosmic RAy Telescope for the Effects of Radiation

Level 0 CRa. TER SOC LRO MOC s. FTP Primary/secondary science Housekeeping PDS L 0 Archive Validation To Level 1 Processing Cosmic RAy Telescope for the Effects of Radiation

Level 0 Data Products Unprocessed instrument data (pulse height at each detector), Level 0 Science secondary science (discarded events, etc. ). Up to 25 packets of up to 48 events per second Level 0 Bias voltage, temperature, etc. , 16 -s resolution Housekeeping Cosmic RAy Telescope for the Effects of Radiation

Level 1 Depacket, create 1 -s data LRO MOC s. FTP Orbit & Attitude CRa. TER SOC Calibration Files PDS L 1 Archive To Level 2 Processing Cosmic RAy Telescope for the Effects of Radiation

Level 1 Data Products Unprocessed instrument data (pulse height at each detector), Level 1 Science depacketed. Creation of 1 -s data. Secondary science placed in 1 -s data header. Level 1 Bias voltage, temperature, etc. , 16 -s resolution Housekeeping Cosmic RAy Telescope for the Effects of Radiation

Level 2 Convert to energy deposited Calculate Si LET QL Plots Events of Interest PDS L 2 Archive To Level 3 Processing Cosmic RAy Telescope for the Effects of Radiation

Level 2 Data Products Level 2 Science Energy deposited in each detector and LET. QL Plots TBD Events of Interest e. g. , SEP events. Cosmic RAy Telescope for the Effects of Radiation

Level 3 Region Separation Magnetotail Foreshock GCR SEP Events To Level 4 Processing Cosmic RAy Telescope for the Effects of Radiation

Level 3 Data Products L 3 Region Data separated into 3 files (or, alternately, 1 file with a data flag) identifying what data was obtained while the moon was in the a) magnetosphere, b) foreshock and c) pure GCR L 3 SEP Data containing SEP events (definition TBD) are separated as well Cosmic RAy Telescope for the Effects of Radiation

Level 4 Calculate LET in TEP Modeling Community ? GCR Spectrum Calculate Particle Flux Cosmic RAy Telescope for the Effects of Radiation

Timetables o Level 2 data produced immediately upon verification of Level 1 data. • Only involves application of pre-flight calibration curves and simple LET calculations. o GCR LET spectrum requires time • • The longer the better Probably something useful after 3 -6 months Cosmic RAy Telescope for the Effects of Radiation

Back-up Slides Cosmic RAy Telescope for the Effects of Radiation

LET Calculation Linear Energy Transfer (LET) is the energy deposition in matter per unit length Cosmic RAy Telescope for the Effects of Radiation

LET Calculation LET in the Silicon detectors can be calculated directly Cosmic RAy Telescope for the Effects of Radiation

LET Calculation E 0 LET in the TEP requires E 0 and Ef Ef Cosmic RAy Telescope for the Effects of Radiation