Registration of high-intensity electron and x-ray fields with polycrystalline CVD diamond detectors

L. N. Davydov; A. V. Rybka; A. A. Vierovkin; S. F. Dudnik; V. I. Gritsyna; V. E. Kutny; O. A. Opalev; V. A. Shevchenko; I. N. Shlyahov; V. E. Strelnitsky; A. Eh. Tenishev; V. L. Uvarov; R. B. James; A. E. Bolotnikov; P. M. Fochuk

doi:10.1117/12.929291

24 October 2012 Registration of high-intensity electron and x-ray fields with polycrystalline CVD diamond detectors

L. N. Davydov, A. V. Rybka, A. A. Vierovkin, S. F. Dudnik, V. I. Gritsyna, V. E. Kutny, O. A. Opalev, V. A. Shevchenko, I. N. Shlyahov, V. E. Strelnitsky, A. Eh. Tenishev, V. L. Uvarov, R. B. James, A. E. Bolotnikov, P. M. Fochuk

Author Affiliations +

Proceedings Volume 8507, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIV; 85071N (2012) https://doi.org/10.1117/12.929291
Event: SPIE Optical Engineering + Applications, 2012, San Diego, California, United States

Abstract

We developed radiation-hard diamond detectors for registering intense fields of high energy electrons and X-rays, and monitoring the mode of operation of electron accelerators. After synthesizing a diamond film of detection quality up to 350-microns thick by chemical vapor deposition (CVD), we analyzed it by infra-red spectroscopy. We also developed techniques for heat treatment of the film, chemical etching, substrate removal, contact application, and priming by an exposure to X-rays and electrons. This work supported the production of detectors with a specific resistance of 10¹⁴Ohm×cm. The dependence of the detector signal’s amplitude on the displacement voltage was investigated under exposure to a direct electron beam with a current ranging from 660 to 930 mA. The duration of the leading edge of a detector pulse was 5 μs. Experiments also were undertaken on the registration by diamond detectors of Bremsstrahlung radiation with an end-point energy of 9 to 70 MeV. We also evaluated the dependence of the amplitude of the detector’s signal on the displacement voltage. Our comparison of detectors’ physical properties and detectors’ response to alphaparticle irradiation before and after the exposure to the accelerator beam showed no degradation, even after the absorbed dose exceeded 11.5 MGy.

Citation Download Citation

L. N. Davydov, A. V. Rybka, A. A. Vierovkin, S. F. Dudnik, V. I. Gritsyna, V. E. Kutny, O. A. Opalev, V. A. Shevchenko, I. N. Shlyahov, V. E. Strelnitsky, A. Eh. Tenishev, V. L. Uvarov, R. B. James, A. E. Bolotnikov, and P. M. Fochuk "Registration of high-intensity electron and x-ray fields with polycrystalline CVD diamond detectors", Proc. SPIE 8507, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIV, 85071N (24 October 2012); https://doi.org/10.1117/12.929291

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available