Charged Particle Tracking with the Timepix ASIC
Abstract
A prototype particle tracking telescope has been constructed using Timepix and Medipix ASIC hybrid pixel assemblies as the six sensing planes. Each telescope plane consisted of one 1.4 cm2 assembly, providing a 256x256 array of 55 micron square pixels. The telescope achieved a pointing resolution of 2.3 micron at the position of the device under test. During a beam test in 2009 the telescope was used to evaluate in detail the performance of two Timepix hybrid pixel assemblies; a standard planar 300 micron thick sensor, and 285 micron thick double sided 3D sensor. This paper describes a detailed charge calibration study of the pixel devices, which allows the true charge to be extracted, and reports on measurements of the charge collection characteristics and Landau distributions. The planar sensor achieved a best resolution of 4.0 micron for angled tracks, and resolutions of between 4.4 and 11 micron for perpendicular tracks, depending on the applied bias voltage. The double sided 3D sensor, which has significantly less charge sharing, was found to have an optimal resolution of 9.0 micron for angled tracks, and a resolution of 16.0 micron for perpendicular tracks. Based on these studies it is concluded that the Timepix ASIC shows an excellent performance when used as a device for charged particle tracking.
Cite
@article{arxiv.1103.2739,
title = {Charged Particle Tracking with the Timepix ASIC},
author = {Kazuyoshi Akiba and Marina Artuso and Ryan Badman and Alessandra Borgia and Richard Bates and Florian Bayer and Martin van Beuzekom and Jan Buytaert and Enric Cabruja and Michael Campbell and Paula Collins and Michael Crossley and Raphael Dumps and Lars Eklund and Daniel Esperante and Celeste Fleta and Abraham Gallas and Miriam Gandelman and Justin Garofoli and Marco Gersabeck and Vladimir V. Gligorov and Hamish Gordon and Erik H. M. Heijne and Veerle Heijne and Daniel Hynds and Malcolm John and Alexander Leflat and Lourdes Ferre Llin and Xavi Llopart and Manuel Lozano and Dima Maneuski and Thilo Michel and Michelle Nicol and Matt Needham and Chris Parkes and Giulio Pellegrini and Richard Plackett and Tuomas Poikela and Eduardo Rodrigues and Graeme Stewart and Jianchun Wang and Zhou Xing},
journal= {arXiv preprint arXiv:1103.2739},
year = {2015}
}
Comments
51 pages, 39 figures. Submitted to Nucl. Phys. Meth. A. ; Contact authors: P. Collins and V. V. Gligorov