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Space Environment In-Situ Suite (SEISS)
image:  SEISS space weather chart
The Space Environment In-Situ Suite (SEISS) will consist of an array of sensors that will monitor the proton, electron, and heavy ion fluxes at geosynchronous orbit. The information provided by the SEISS is critical for assessing the radiation hazard to astronauts and satellites. In addition to hazard assessment, the information from the SEISS can be used to warn of high flux events, mitigating any damage to radio communication.

The SEISS instrument suite consists of the Energetic Heavy Ion Sensor (EHIS), the Magnetospheric Particle Sensor -High and Low (MPS-HI and MPS-LO), and the Solar and Galactic Proton Sensor (SGPS).  Data from SEISS will drive solar radiation storm portion of NOAA space weather scales and other alerts and warnings and will improve energetic particle forecasts.

Electrons will be measured on GOES-R over the range of 30 eV to 4 MeV. Protons will be measured on GOES-R over the range 80 kev to 500 MeV and over 500 MeV as compared to the GOES-N measurement range of 80 KeV to 700 MeV. GOES-R will measure four solar ion mass groups: He, C-N-O, Ne-S, and Fe from 10 Mec/nucleon to 200 Mev/nucleon by comparison, GOES-N measures only alpha particles.
SEISS Brassboard

image:  SEISS Brassboard units
 
SEISS Brassboard Suite
 
image:   SEISS Magnetospheric Particle Sensor - Low Energy Range Flight Model
EHIS:   Energetic Heavy Ion Sensor
SGPS:   Solar and Galactic Proton Sensor
DPU:   Data Processing Unit
MPS-LO:   Magnetospheric Particle Sensor - Low Energy Range
MPS-HI:   Magnetospheric Particle Sensor - High Energy Range
 
       
  SEISS Requirements
MPS-LO Performance Requirements
MPS-HI Performance Requirements
SGPS Requirements
EHIS Performance Requirements
 
 
List of SEISS Products: Click here  

Contractor:   Assurance Technology Corporation,
Carlisle, MA
 
 
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