Setup for irradiation and characterization of materials and Si particle detectors at cryogenic temperatures
- 作者：S. Vä ; yrynen ; P. Pusa ; P. Sane ; P. Tikkanen ; J. Rä ; isä ; nen ; K. Kuitunen ; F. Tuomisto ; J. Hä ; rkö ; nen ; I. Kassamakov ; E. Tuominen ; et al.
- 关键词：Particle irradiation facility ; Positron annihilation spectroscopy ; Silicon particle characterization
- 刊名：Nuclear Instruments and Methods in Physics Research Section A ; Accelerators ; Spectrometers ; Detectors and Associated Equipment
- 出版年：2007
- 期刊代码：41_01689002
- 类别：ph
- 出版时间：11 March 2007
- 卷：572
- 期：2
- 页码：978-984
- 文件大小：336 K
摘要
A novel facility for proton irradiation with sample cryocooling has been developed at the Accelerator Laboratory of Helsinki University (equipped with a 5 MV tandem accelerator). The setup enables unique experiments to be carried out within the temperature range of 10–300 K. The setup has been constructed for “on-line” studies of vacancies with positron annihilation spectroscopy (PAS) including the option for optical ionization of the vacancies, and for current–voltage (IV) measurements of irradiated silicon particle detectors. The setup is described in detail and typical performance characteristics are provided. The facility functionality was tested by performing PAS experiments with high-resistivity silicon and by IV measurements for two types of irradiated silicon particle detectors.