Strontium iodide radiation instrumentation II (SIRI-2)

Lee J. Mitchell; Bernard F. Phlips; Richard S. Woolf; Theodore T. Finne; W. Neil Johnson

doi:10.1117/12.2528073

9 September 2019 Strontium iodide radiation instrumentation II (SIRI-2)

Lee J. Mitchell, Bernard F. Phlips, Richard S. Woolf, Theodore T. Finne, W. Neil Johnson

Proceedings Volume 11118, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XXI; 111180I (2019) https://doi.org/10.1117/12.2528073
Event: SPIE Optical Engineering + Applications, 2019, San Diego, California, United States

Abstract

The SIRI line of instruments is designed to space-qualify new space-based, gamma-ray detector technology for Department of Defense (DoD) and astrophysics applications. SIRI-2’s primary objective is to demonstrate the performance of europium-doped strontium iodide (SrI₂:Eu) gamma-ray detection technology with sufficient active area for DoD operational needs. Secondary scientific objectives include understanding the internal background of SrI₂:Eu in the space radiation environment, and studying transient phenomena, such as solar flares. The primary detector array of the SIRI instrument consists of seven hexagonal europium-doped strontium iodide (SrI₂:Eu) scintillation detectors 3.81 cm by 3.81 cm, with a combined active area of 66 cm². SIRI-2’s primary detectors have an energy resolution of ~4% at 662 keV. SIRI-2 is expected to operate in the high gamma-ray background of a geosynchronous orbit and the instrument includes a number of features to both passively and actively suppress the unique background of the outer Van Allen belts. Construction and environmental testing of the SIRI-2 instrument has been completed, and it is currently awaiting integration onto the spacecraft bus. The expected launch date is Aug 2020 onboard the Space Test Program’s STPSat-6.

Conference Presentation

Citation Download Citation

Lee J. Mitchell, Bernard F. Phlips, Richard S. Woolf, Theodore T. Finne, and W. Neil Johnson "Strontium iodide radiation instrumentation II (SIRI-2)", Proc. SPIE 11118, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XXI, 111180I (9 September 2019); https://doi.org/10.1117/12.2528073

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available