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Title: Investigations of high mobility single crystal chemical vapor deposition diamond for radiotherapy photon beam monitoring

Abstract

The intrinsic properties of diamond make this material theoretically very suitable for applications in medical physics. Until now ionization chambers have been fabricated from natural stones and are commercialized by PTW, but their fairly high costs and long delivery times have often limited their use in hospital. The properties of commercialized intrinsic polycrystalline diamond were investigated in the past by many groups. The results were not completely satisfactory due to the nature of the polycrystalline material itself. In contrast, the recent progresses in the growth of high mobility single crystal synthetic diamonds prepared by chemical vapor deposition (CVD) technique offer new alternatives. In the framework of the MAESTRO project (Methods and Advanced Treatments and Simulations for Radio Oncology), the CEA-LIST is studying the potentialities of synthetic diamond for new techniques of irradiation such as intensity modulated radiation therapy. In this paper, we present the growth and characteristics of single crystal diamond prepared at CEA-LIST in the framework of the NoRHDia project (Novel Radiation Hard CVD Diamond Detector for Hadrons Physics), as well as the investigations of high mobility single crystal CVD diamond for radiotherapy photon beam monitoring: dosimetric analysis performed with the single crystal diamond detector in terms of stabilitymore » and repeatability of the response signal, signal to noise ratio, response speed, linearity of the signal versus the absorbed dose, and dose rate. The measurements performed with photon beams using radiotherapy facilities demonstrate that single crystal CVD diamond is a good alternative for air ionization chambers for beam quality control.« less

Authors:
; ; ; ;  [1];  [2]
  1. CEA-LIST, Laboratoire Capteurs Diamant, CEA-Saclay, Gif-sur-Yvette 91191 (France)
  2. Institut Gustave Roussy, Villejuif 94805 (France)
Publication Date:
OSTI Identifier:
21133978
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 103; Journal Issue: 5; Other Information: DOI: 10.1063/1.2872193; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
61 RADIATION PROTECTION AND DOSIMETRY; AIR; CHEMICAL VAPOR DEPOSITION; CRYSTAL GROWTH; DIAMONDS; DOSE RATES; DOSIMETRY; IONIZATION CHAMBERS; MONOCRYSTALS; PHOTON BEAMS; POLYCRYSTALS; QUALITY CONTROL; RADIATION DETECTION; RADIATION DOSES; RADIATION MONITORING; RADIOTHERAPY; SIGNAL-TO-NOISE RATIO; SIGNALS; SIMULATION

Citation Formats

Tromson, D., Descamps, C., Tranchant, N., Bergonzo, P., Nesladek, M., and Isambert, A.. Investigations of high mobility single crystal chemical vapor deposition diamond for radiotherapy photon beam monitoring. United States: N. p., 2008. Web. doi:10.1063/1.2872193.
Tromson, D., Descamps, C., Tranchant, N., Bergonzo, P., Nesladek, M., & Isambert, A.. Investigations of high mobility single crystal chemical vapor deposition diamond for radiotherapy photon beam monitoring. United States. doi:10.1063/1.2872193.
Tromson, D., Descamps, C., Tranchant, N., Bergonzo, P., Nesladek, M., and Isambert, A.. Sat . "Investigations of high mobility single crystal chemical vapor deposition diamond for radiotherapy photon beam monitoring". United States. doi:10.1063/1.2872193.
@article{osti_21133978,
title = {Investigations of high mobility single crystal chemical vapor deposition diamond for radiotherapy photon beam monitoring},
author = {Tromson, D. and Descamps, C. and Tranchant, N. and Bergonzo, P. and Nesladek, M. and Isambert, A.},
abstractNote = {The intrinsic properties of diamond make this material theoretically very suitable for applications in medical physics. Until now ionization chambers have been fabricated from natural stones and are commercialized by PTW, but their fairly high costs and long delivery times have often limited their use in hospital. The properties of commercialized intrinsic polycrystalline diamond were investigated in the past by many groups. The results were not completely satisfactory due to the nature of the polycrystalline material itself. In contrast, the recent progresses in the growth of high mobility single crystal synthetic diamonds prepared by chemical vapor deposition (CVD) technique offer new alternatives. In the framework of the MAESTRO project (Methods and Advanced Treatments and Simulations for Radio Oncology), the CEA-LIST is studying the potentialities of synthetic diamond for new techniques of irradiation such as intensity modulated radiation therapy. In this paper, we present the growth and characteristics of single crystal diamond prepared at CEA-LIST in the framework of the NoRHDia project (Novel Radiation Hard CVD Diamond Detector for Hadrons Physics), as well as the investigations of high mobility single crystal CVD diamond for radiotherapy photon beam monitoring: dosimetric analysis performed with the single crystal diamond detector in terms of stability and repeatability of the response signal, signal to noise ratio, response speed, linearity of the signal versus the absorbed dose, and dose rate. The measurements performed with photon beams using radiotherapy facilities demonstrate that single crystal CVD diamond is a good alternative for air ionization chambers for beam quality control.},
doi = {10.1063/1.2872193},
journal = {Journal of Applied Physics},
number = 5,
volume = 103,
place = {United States},
year = {Sat Mar 01 00:00:00 EST 2008},
month = {Sat Mar 01 00:00:00 EST 2008}
}