The design and qualification of the GEMS X-ray polarimeters

J. E. Hill, R. G. Bakera, J. K. Blacka, M. J. Brownea, W. H. Baumgartner, Caldwell E.M. Caldwell, J. D. Cantwell, A. Davies, A. B. Desai, P. L. Dickens, N. K. Dobson, R. L. Foxwell, A. S. Francomacaro, D. Gall, K. J. Gregory, S. Griffiths, A. Hayato, R. O. Hampshire, T. Hwang, M. D. JhabvalaK. Jahoda, P. Kaaret, S. J. Lehtonen, N. F. Martin, J. S. Mohammed, K. Montt De Garcia, A. Morell, D. S. Nolan, R. E. Russell, M. A. Sampson, J. A. Sanders, K. Simms, M. J. Singer, J. H. Swank, T. Tamagawa, A. Weaver, S. N. Yerushalmi, J. J. Xu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

18 Scopus citations

Abstract

The Gravity and Extreme Magnetism Small Explorer (GEMS) will realize its scientific objectives through high sensitivity linear X-ray polarization measurements in the 2-10 keV band. The GEMS X-ray polarimeters, based on the photoelectric effect, provide a strong polarization response with high quantum efficiency over a broad band-pass by a novel implementation of the time projection chamber (TPC). This paper will discuss the basic principles of the TPC polarimeter and describe the details of the mechanical and electrical design of the GEMS flight polarimeter. We will present performance measurements from two GEMS engineering test units in response to polarized and unpolarized X-rays and before and after thermal and vibration tests performed to demonstrate that the design is at a technology readiness level 6 (TRL-6).

Original languageEnglish (US)
Title of host publicationSpace Telescopes and Instrumentation 2012
Subtitle of host publicationUltraviolet to Gamma Ray
DOIs
StatePublished - 2012
EventSpace Telescopes and Instrumentation 2012: Ultraviolet to Gamma Ray - Amsterdam, Netherlands
Duration: Jul 1 2012Jul 6 2012

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8443
ISSN (Print)0277-786X

Other

OtherSpace Telescopes and Instrumentation 2012: Ultraviolet to Gamma Ray
CountryNetherlands
CityAmsterdam
Period7/1/127/6/12

Keywords

  • Di-methyl Ether
  • GEM
  • Gas Electron Multiplier
  • Gravity and Extreme Magnetism SMEX
  • Time-projection Chamber Polarimeter
  • X-ray Polarization

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'The design and qualification of the GEMS X-ray polarimeters'. Together they form a unique fingerprint.

  • Cite this

    Hill, J. E., Bakera, R. G., Blacka, J. K., Brownea, M. J., Baumgartner, W. H., E.M. Caldwell, C., Cantwell, J. D., Davies, A., Desai, A. B., Dickens, P. L., Dobson, N. K., Foxwell, R. L., Francomacaro, A. S., Gall, D., Gregory, K. J., Griffiths, S., Hayato, A., Hampshire, R. O., Hwang, T., ... Xu, J. J. (2012). The design and qualification of the GEMS X-ray polarimeters. In Space Telescopes and Instrumentation 2012: Ultraviolet to Gamma Ray [84431Q] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 8443). https://doi.org/10.1117/12.928435