Optimisation of the manufacturing process of tritide and deuteride targets used for neutron production

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• 作者：Monnin ; Carole ; Bach ; Pierre ; Tulle ; Pierre Alain ; van Rompay ; Marc ; Ballanger ; Anne
• 关键词：29.17 ; 81.15 ; 68.55 ; 27.10 ; 61.16.B ; 61.16.C ; Tritium ; Deuterium ; Titanium ; Hydride
• 刊名：Nuclear Instruments and Methods in Physics Research Section A ; Accelerators ; Spectrometers ; Detectors and Associated Equipment
• 出版年：2002
• 期刊代码：41_01689002
• 类别：ph
• 出版时间：March 11, 2002
• 卷：480
• 期：1
• 页码：214-222
• 文件大小：336 K

摘要

As a neutron tube manufacturer, SODERN is now in charge of manufacturing tritium targets for accelerators, in cooperation with CEA/DAM/DTMN in Valduc. Specific deuterium and tritium targets are manufactured on request, according to the requirements of the users, starting from titanium targets on copper substrates, and going to more sophisticated devices. The range of possible uses is wide, including thin targets for neutron calibration, thick targets with controlled loading of deuterium and tritium, rotating targets or large size rotating targets for higher lifetimes. The activity of the targets ranges from 3.7×10¹⁰ to 3.7×10¹³Bq (1–1000Ci), the diameter being up to 30cm. Sodern and the CEA/Valduc centre have developed different technologies for tritium target manufacture, allowing the selection of the best configuration for each kind of use. In order to optimize the production of high energy neutrons, the performance of tritide and deuteride titanium targets made by different processes has been studied experimentally by bombardment with 120 and 350kV deuterons provided by electrostatic accelerators. It is then possible to optimize either neutron output or lifetime and stability or thermal behaviour. The importance of the deposit evaporation conditions on the efficiency of neutron emission is clearly demonstrated, as well as the thermomechanical stability of the Ti thin film under deuteron bombardment. The main parameters involved in the target performance are discussed from a thermodynamical approach.