Piccolo Micromegas: First in-core measurements in a nuclear reactor
- 作者：J. Pancin ; S. Andriamonje ; S. Aune ; A. Giganon ; Y. Giomataris ; J.F. Lecolley ; M. Riallot ; R. Rosa
- 关键词：Micromegas ; Neutron detection ; ADS ; Nuclear reactor
- 刊名：Nuclear Instruments and Methods in Physics Research Section A ; Accelerators ; Spectrometers ; Detectors and Associated Equipment
- 出版年：2008
- 期刊代码：41_01689002
- 类别：ph
- 出版时间：11 July 2008
- 卷：592
- 期：1-2
- 页码：104-113
- 文件大小：884 K
摘要
An Accelerator Driven System (ADS) consists in the coupling of an accelerator with a nuclear reactor. Such systems will need neutron detectors working in a wide energy range and insensitive to X- and <a name="mml5">a><a style="text-decoration:none; color:black" href="/science?_ob=MathURL&_method=retrieve&_udi=B6TJM-4S7BD98-2&_mathId=mml5&_user=1067359&_cdi=5314&_rdoc=14&_acct=C000050221&_version=1&_userid=10&md5=74d7f3eeb6a9d52a677102daf258ed39" title="Click to view the MathML source" alt="Click to view the MathML source">γa>-rays. Micromegas technology has been proposed to achieve this goal. The ability of Micromegas to detect neutrons over a wide energy range has already been demonstrated and this detector is, under certain conditions, insensitive to <a name="mml6">a><a style="text-decoration:none; color:black" href="/science?_ob=MathURL&_method=retrieve&_udi=B6TJM-4S7BD98-2&_mathId=mml6&_user=1067359&_cdi=5314&_rdoc=14&_acct=C000050221&_version=1&_userid=10&md5=40e45715c337dc29c8b86aa46370ae19" title="Click to view the MathML source" alt="Click to view the MathML source">γa>-rays. A new Micromegas neutron detector called Piccolo Micromegas has been designed to get integrated neutron fluxes on different energy domains. For the first time, Piccolo Micromegas has been placed in the core of a nuclear reactor at Casaccia in Italy. The configuration of the detector will be presented as well as its functioning and the reasons of its insensitivity to <a name="mml7">a><a style="text-decoration:none; color:black" href="/science?_ob=MathURL&_method=retrieve&_udi=B6TJM-4S7BD98-2&_mathId=mml7&_user=1067359&_cdi=5314&_rdoc=14&_acct=C000050221&_version=1&_userid=10&md5=5a8d9710572ee070369abc893ce457dc" title="Click to view the MathML source" alt="Click to view the MathML source">γa>-rays. The results of the operation of the detector will also be shown for low reactor power to high reactor power and some improvements will be suggested.