Characterization of a Single Crystal Diamond Pixel Detector in a High Energy Particle Beam
Abstract
Diamond has been developed as a material for the detection of charged particles by ionization. Its radiation hardness makes it an attractive material for detectors operated in a harsh radiation environment e.g. close to a particle beam as is the case for beam monitoring and for pixel vertex detectors. Poly-crystalline chemical vapor deposition (CVD) diamond has been studied as strip and pixel detectors so far. We report on a first-time characterization of a single-crystal diamond pixel detector in a 100 GeV particle beam at CERN. The detectors are made from irregularly shaped single crystal sensors, 395mm thick, mated by bump bonding to a front-end readout IC as used in the ATLAS pixel detector with pixel sizes of 50 x 400 mm2. The diamond sensors show excellent charge collection properties: full collection over the entire detector volume, clean and narrow signal charge distributions with a S/N value of >100 and a hit detection efficiency of (99.9 +- 0.1)%. The measured spatial resolution for particles under normal incidence in the shorter pixel direction is (8.9 +- 0.1) um.
Keywords
Cite
@article{arxiv.0810.2080,
title = {Characterization of a Single Crystal Diamond Pixel Detector in a High Energy Particle Beam},
author = {M. Mathes and M. Cristinziani and H. Kagan and S. Smith and W. Trischuk and J. Velthuis and N. Wermes},
journal= {arXiv preprint arXiv:0810.2080},
year = {2009}
}
Comments
11 pages, 9 figures