First results of spherical GEMs

Details First results of spherical GEMs First results of spherical GEMs

2010-11-24

arxiv.org/abs/1011.5528v1

Physics

Instrumentation and Detectors

Submitted to the IEEE Nuclear Science Symposium 2010 Conference Record. This paper won the third place Student Paper Award at

Scientific paper

We developed a method to make GEM foils with a spherical geometry. Tests of this procedure and with the resulting spherical GEMs are presented. Together with a spherical drift electrode, a spherical conversion gap can be formed. This eliminates the parallax error for detection of x-rays, neutrons or UV photons when a gaseous converter is used. This parallax error limits the spatial resolution at wide scattering angles. Besides spherical GEMs, we have developed curved spacers to maintain accurate spacing, and a conical field cage to prevent edge distortion of the radial drift field up to the limit of the angular acceptance of the detector. With these components first tests are done in a setup with a spherical entrance window but a planar readout structure; results will be presented and discussed. A flat readout structure poses difficulties, however. Therefore we will show advanced plans to make a prototype of an entirely spherical double-GEM detector, including a spherical 2D readout structure. This detector will have a superior position resolution, also at wide angles, and a high rate capability.

Affiliated with

Also associated with

No associations

Rating

First results of spherical GEMs does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with First results of spherical GEMs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and First results of spherical GEMs will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-586744