SIS
The Solar Isotope Spectrometer (SIS) on the Advanced Composition Explorer (ACE) is designed to provide high resolution measurements of the isotopic composition of energetic nuclei from He to Ni (Z=2 to 28) over the energy range from ~10 to ~100 MeV/nucleon. During large solar events, when particle fluxes can increase over quiet-time values by factors of up to 10000, SIS will measure the isotopic composition of the solar corona, while during solar quiet times SIS will measure the isotopes of low-energy Galactic cosmic rays and the composition of the anomalous cosmic rays which are thought to originate in the nearby interstellar medium. The solar energetic particle measurements are useful to further our understanding of the Sun, while also providing a baseline for comparison with the Galactic cosmic ray measurements carried out by the Cosmic Ray Isotope Spectrometer (CRIS) oon ACE. SIS is also part of the Real Time Solar Wind (RTSW) set of instruments flying aboard ACE. Four of ACE's nine instruments will be constantly monitored by the National Oceanic and Atmospheric Administration (NOAA) operated ground stations. The data from these instruments will be used by NOAA to evaluate the risk of geomagnetic storms from solar events and to make predictions of these storms rapidly available. SIS was designed and developed by the California Institute of Technology, the NASA/Goddard Space Flight Center, and the Jet Propulsion Laboratory. See: http://www.srl.caltech.edu/ACE/CRIS_SIS/sis.html Group: Instrument_Details Entry_ID: SIS Group: Instrument_Identification Instrument_Category: Solar/Space Observing Instruments Instrument_Class: Particle Detectors Short_Name: SIS Long_Name: Solar Isotope Spectrometer End_Group Group: Associated_Platforms Short_Name: ACE End_Group Online_Resource: http://www.srl.caltech.edu/ACE/CRIS_SIS/sis.html Sample_Image: http://www.srl.caltech.edu/ACE/CRIS_SIS/images/SIS-front.jpeg Group: Instrument_Logistics Data_Rate: 2 kbps Instrument_Start_Date: 1997-08-25 Instrument_Owner: NASA Instrument_Owner: California Institute of Technology End_Group End_Group
Particle Detectors