Aza Eleni, Caresana Marco, Cassell Christopher, Colombo Valeria, Damjanovic Sanja, Gilardoni Simone, Manessi Giacomo Paolo, Pangallo Michel, Perrin Daniel, Silari Marco
CERN, CH-1211 Geneva 23, Switzerland Department of Physics, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece.
Department of Energy, Politecnico of Milan, Via Ponzio 34/3, 20133 Milan, Italy.
Radiat Prot Dosimetry. 2014 Oct;161(1-4):190-5. doi: 10.1093/rpd/nct215. Epub 2013 Sep 12.
This paper discusses an intercomparison campaign carried out in several locations around the CERN Proton Synchrotron. The locations were selected in order to perform the measurements in different stray field conditions. Various neutron detectors were employed: ionisation chambers, conventional and extended range rem counters, both commercial and prototype ones, including a novel instrument called LUPIN, specifically conceived to work in pulsed fields. The attention was focused on the potential differences in the instrument readings due to dead-time losses that are expected to affect most commercial units. The results show that the ionisation chambers and LUPIN agree well with the expected H*(10) values, as derived from FLUKA simulations, showing no relevant underestimations even in strongly pulsed fields. On the contrary, the dead-time losses of the other rem counters induced an underestimation in pulsed fields that was more important for instruments characterised by a higher dead time.
本文讨论了在欧洲核子研究组织（CERN）质子同步加速器周围多个地点开展的一次比对活动。选择这些地点是为了在不同的杂散场条件下进行测量。使用了各种中子探测器：电离室、常规和扩展量程的rem计数器，既有商业产品也有原型产品，包括一种名为LUPIN的新型仪器，它是专门为在脉冲场中工作而设计的。注意力集中在由于预期会影响大多数商业设备的死时间损失而导致的仪器读数潜在差异上。结果表明，电离室和LUPIN与从FLUKA模拟得出的预期H*(10)值吻合良好，即使在强脉冲场中也没有明显的低估。相反，其他rem计数器的死时间损失在脉冲场中导致了低估，对于死时间较长的仪器来说这种低估更为显著。
