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Center Independent Research & Development: GSFC IRAD

Development of stainless steel gas electron multipliers

Completed Technology Project
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Project Description

Development of stainless steel gas electron multipliers Project

We will develop gas electron multipliers GEMs) that are robust in negative ion gas to improve the sensitivity of X-ray Polarimeters.

We will develop a technique for fabricating GEMs that will both maintain the required spacing over arbitrarily large areas and be self-aligning. It will be based on separating two tensioned foils.

We will establish the foil tensioning technique and the optimum spacing between the foils. 

  • When the process is finalized, we will formalize the foil tensioning technique and measure creep, temperature stability and flatness using methods established for GEM testing.
  • Finally we will assemble a 3x7 cm2 GEM that will be integrated into a polarimeter and we will measure the gain uniformity over the area of the GEM.
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