HR: 1340h
AN: SM23A-0397 INVITED     [Abstracts]
TI: Burst Memory and Event Trigger System for the Magnetospheric Multiscale Mission
AU: * Kletzing, C A
EM: craig-kletzing@uiowa.edu
AF: University of Iowa, Department of Physics and Astronomy, 203 VAN, Iowa City, IA 52242 United States
AU: Ergun, R E
EM: ree@lasp.colorado.edu
AF: University of Colorado, LASP 1234 Innovation Dr Campus Box, Boulder, CO 80303 United States
AU: Torbert, R B
EM: roy.torbert@unh.edu
AF: University of New Hampshire, Space Science Center, Morse Hall, Durham, NH 03824 United States
AU: Burch, J L
EM: jburch@swri.edu
AF: Southwest Research Institute, POD 28510 6220 Culebra Rd, San Antonio, TX 78228-0510 United States
AU: Bounds, S R
EM: scott-bounds@uiowa.edu
AF: University of Iowa, Department of Physics and Astronomy, 203 VAN, Iowa City, IA 52242 United States
AU: Hesse, M
EM: michael.hesse@nasa.gov
AF: NASA Goddard Space Flight Center, Code 612.3, Greenbelt, MD 20771 United States
AU: Mauk, B
EM: barry.mauk@jhuapl.edu
AF: Applied Physics Lab, Johns Hopkins University 11100 John Hopkins Rd, Laurel, MD 20723-6099 United States
AU: Moore, T E
EM: thomas.e.moore@nasa.gov
AF: NASA Goddard Space Flight Center, Interplanetary Phys MC 692 Building 21 Room 257 A, Greenbelt, MD 20771-0000 United States
AU: Young, D T
EM: dyoung@swri.org
AF: Southwest Research Institute, POD 28510 6220 Culebra Rd, San Antonio, TX 78228-0510 United States
AB: To achieve the highest resolution measurement of the physics of magnetic reconnection, the MMS SMART measurements will utilize a high data rate burst storage system for capturing those intervals when the MMS spacecraft traverse important regions of interest. Two basic modes of data taking are planned, Slow Survey and Fast Survey. Fast Survey mode is targeted at the broad regions of the magnetosphere where reconnection can occur. Slow Survey is aimed an regions of secondary science importance. In Fast Survey, all instruments in the SMART suite continually send high rate data to the Central Instrument Data Processor (CIDP) which holds this data in a circular buffer. Along with this data, each instrument sends a burst data quality (BDQ) flag which represents the scientific "quality" of the preceding period for consideration as a burst interval. The CIDP on each spacecraft collects the individual BDQ's and combines them via a predetermined algorithm into a spacecraft data quality (SDQ) flag. Each spacecraft then sends its individual SDQ to the other three spacecraft via the Interspacecraft Ranging and Alarm System (IRAS). After a short latency period all four spacecraft have all four SDQ values and compute a mission data quality (MDQ) flag. If this flag is above the appropriate threshold then all spacecraft save identical data intervals from from the circular buffer for transmission to the ground during the next downlink. If This flexible scheme will yield optimized science data collection and allows the evolution of the burst data criteria as the best burst triggers are identified.
DE: 2723 Magnetic reconnection (7526, 7835)
DE: 2794 Instruments and techniques
SC: SPA-Magnetospheric Physics [SM]
MN: Fall Meeting 2005