Evaluation of a multi-guard ring (MGR) structure diode as diagnostic X-ray dosimeter

被引：6
作者：
Camargo, F.
Khoury, H. J.
Nascimento, C. R.
Asfora, V. K.
Bueno, C. C.
机构：
[1] IPEN CNEN SP, BR-05422970 Sao Paulo, Brazil
[2] Univ Fed Pernambuco, BR-50740540 Recife, PE, Brazil
[3] Pontificia Univ Catolica Sao Paulo, BR-01303050 Sao Paulo, Brazil
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2007年 / 580卷 / 01期
基金：
巴西圣保罗研究基金会;
关键词：
silicon detector; photon dosimetry; radiation protection; rad-hard silicon detector; X-ray dosimetry;
D O I：
10.1016/j.nima.2007.05.082
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
In this paper, we describe the results obtained for the evaluation of a multi-guard ring (MGR) structure diode as diagnostic X-ray dosimeter. This device was developed in the framework of R&D programs for the future CMS experiment at the Large Hadron Collider (LHC) with high radiation hardness to fulfill the requirements from this accelerator environment. In order to use the MGR diode as a dosimeter, it was connected in the photovoltaic mode to the input of an integrating electrometer and positioned at the center of an X-ray beam, beside a previously calibrated ionization chamber. The dependence of the diode response on the X-ray beam doses was evaluated for 35-90 kV X-ray generator bias supply, with doses in the range of 50 mu Gy-5 mGy. The good linearity of the dose-response curve obtained showed the MGR diode dosimeter to be a reliable alternative method for diagnostic X-ray dosimetry. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：194 / 196
页数：3
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