Radiation Physics and Engineering
A peer-reviewed journal published by K. N. Toosi University of Technology

Design a two-dimensional alpha surface contamination monitoring system using micro-pattern gaseous detectors (MPGDs)

Document Type : Research Article

Authors

Mohsen Mirhabibi 1
Maryam Najibzadeh 1
Ali Negarestani 2
Ahmad Akhound 1

1 Faculty of Physics, Payame Noor University, Tehran, Iran

2 Faculty of Science and Technology, Kerman Graduate University of Technology, P.O. Box: 19536-33511, Kerman, Iran,

https://doi.org/10.22034/rpe.2021.297575.1034
Abstract
Addressed herein, a new monitoring method for alpha surface contamination based on the function of a thick gaseous electron multiplier (THGEM) in a self-quenching streamer mode (SQS) has been introduced. SQS mode detectors can detect alpha surface contamination in two dimensions. In the current study, the ability of thick gas electron multiplier detectors in SQS mode for two-dimensional monitoring of alpha surface contamination has been investigated by two Am-241 sources with activities equal to 33 and 150 kBq.m-3. It has been found that the brightness is stronger in front of stronger sources. This may be attributed to the difference in contamination levels. It was also observed that the spatial resolution of the contamination rate depends on the number of holes per unit area of ​​each THGEM. The advantage of this system is the ability to determine both the location and intensity of surface contamination with no need for an electronic multiplier or reader system.

Highlights

• A new method for measuring alpha particles using the function of thick electronic multipliers in natural glow mode.
• Two-dimensional detection of alpha particles including fast response time and good spatial resolution.
• Determine the location and intensity of surface contamination with no need for electronic multiplier or reader system.

Keywords

Micro pattern gas detectors
Thick gas electron multiplier
Self-quenching streamer mode
Alpha surface contamination monitoring
Altunbas, C., Cap´eans, M., Dehmelt, K., et al. (2002). Construction, test and commissioning of the triple-GEM tracking detector for COMPASS. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 490(1-2):177–203.
Corradi, G., Murtas, F., and Tagnani, D. (2007). A novel high-voltage system for a triple GEM detector. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 572(1):96–97.
Hashemi, S. M. and Negarestani, A. (2018). A new method for alpha particle detection use of electron multiplier assembly (EMA) in SQS mode. Journal of Instrumentation, 13(05):P05025.
Knoll, G. F. (2010). Radiation detection and measurement. John Wiley & Sons. Murtas, F. (2002). Development of a gaseous detector based on Gas Electron Multiplier (GEM) Technology. Talk presented at the LNF (INFN), Frascati, 28.
Peskov, V., Fonte, P., Danielsson, M., et al. (2001). The study and optimization of new micropattern gaseous detectors for high-rate applications. IEEE Transactions on Nuclear Science, 48(4):1070–1074.
Sauli, F. (1997). GEM: A new concept for electron amplification in gas detectors. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 386(2-3):531–534.
Souri, R., Negarestani, A., and Mahani, M. (2018). A new approach for direct imaging of Alpha radiation by using Micro Pattern Gas Detectors in SQS mode. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 884:128–135.
Xiao, S.-M., Luo, Z.-P., Liu, Q., et al. (2019). Development of alpha surface contamination monitor based on THGEM for contamination distribution. Nuclear Science and Techniques, 30(10):1–7.
Radiation Physics and Engineering
Volume 2, Issue 3
Summer 2021
Pages 41-44

  • Receive Date 31 July 2021
  • Revise Date 20 October 2021
  • Accept Date 26 October 2021

Home

Submit Manuscript

Reviewers

Contact Us