Physics
Scientific paper
Apr 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007jphcs..65a2006b&link_type=abstract
Journal of Physics: Conference Series, Volume 65, Issue 1, pp. 012006 (2007).
Physics
Scientific paper
We report on the results of a new, sealed, Gas Pixel Detector. The very compact design and the absence of the gas flow system, make this detector substantially ready for use as focal plane detector for future X-ray space telescopes and other applications in soft X-ray science. The instrument brings high sensitivity to X-ray polarimetry, which is the last unexplored field of X-ray astronomy. It derives the polarization information from the track of the photoelectrons that are imaged by a high gain (>1000), fine pitch GEM that matches the pitch of a pixel ASIC which is the collecting anode of the GPD (105k, 50 μm wide, hexagonal cells). The device is able to simultaneously perform good imaging (50÷60 μm), moderate spectroscopy (~18% at 6 keV) as well as fast, high rate timing in the 1-10keV range. Moreover, being truly 2D, it is non dispersive and does not require any rotation. The great improvement of sensitivity, at least two orders of magnitude with respect to traditional polarimeters (based on Bragg crystals or Thomson scattering), will allow the direct exploration of the most dramatic objects of the X-ray sky. At the focus of the large mirror area of the XEUS telescope it will be decisive in reaching many of the scientific goals of the mission. With integration times of the order of one day, polarimetry of Active Galactic Nuclei at the per cent level will be possible, making for a real breakthrough in high energy astrophysics
No associations
LandOfFree
Imaging few keV photoelectrons tracks with Gas Pixel Detectors 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 Imaging few keV photoelectrons tracks with Gas Pixel Detectors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Imaging few keV photoelectrons tracks with Gas Pixel Detectors will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1084212