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Pavel Golubev

Pavel Golubev

Senior lecturer

Pavel Golubev

CHICSi - a compact ultra-high vacuum compatible detector system for nuclear reaction experiments at storage rings. II. Detectors

Author

  • Pavel Golubev
  • Vladimir Avdeichikov
  • Lars CarlĂ©n
  • Bo Jakobsson
  • A Siwek
  • EJ van Veldhuizen
  • L Westerberg
  • Harry J Whitlow

Summary, in English

We describe the detectors for identification of charged particles and fragments in CHICSi, a large solid angle multitelescope system mounted inside an ultra-high vacuum (UHV), cluster-jet target chamber. CHICSi performs nuclear reaction experiments at storage rings. The telescopes consist of a first very thin, 10-14 mum Si detector, a second 300 mum (or possibly 500 pm) ion implanted Si detector supplemented by a 6 mm GSO(Ce) scintillator read out by a photodiode (PD) or by a third 300 mum Si detector. The telescopes provide full charge separation up to Z = 17 and mass resolution up to A = 9 in the energy range 0.7-60A MeV. The thin p-i-n diode detector, etched out from a 280 mum Si wafer, and the GSO/PD detector, both exclusively developed for CHICSi, provide an energy resolution less than or equal to 8%, while the standard 300 mum detectors have less than or equal to 2% energy resolution. Radiation stability of the Si detectors is confirmed up to an integrated flux of 10(10) alpha particles. The GSO detector has 70% light collection efficiency with the optical coupling to the PD a simple open, 0.2 mm, gap. A new method, developed to perform absolute energy calibration for the GSO/PD detector is presented. (C) 2003 Elsevier Science B.V. All rights reserved.

Department/s

  • Nuclear physics

Publishing year

2003

Language

English

Pages

96-115

Publication/Series

Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment

Volume

500

Issue

1-3

Document type

Journal article

Publisher

Elsevier

Topic

  • Accelerator Physics and Instrumentation

Keywords

  • multi-detector system
  • ultra-high vacuum compatibility
  • ultra-thin
  • detectors

Status

Published

Research group

  • Hadronic Reactions

ISBN/ISSN/Other

  • ISSN: 0167-5087