The test beamline of the European Spallation Source – Instrumentation development and wavelength frame multiplication
The test beamline of the European Spallation Source – Instrumentation development and wavelength frame multiplication
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欧洲散裂源的测试光束线 - 仪器开发和波长帧倍增
DOI：
10.1016/j.nima.2016.09.034
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发表时间：
2016
影响因子：
1.4
通讯作者：
M. Strobl
中科院分区：
文献类型：
--
作者：
R. Woracek;T. Hofmann;M. Bulat;M. Sales;K. Habicht;K. Andersen;M. Strobl
欧洲中子源（ESS）计划于2020年开始运行，旨在为全球任何设施的实验研究提供最强的中子束。它的长脉冲时间结构意味着与其他中子源相比，仪器有很大的不同，相反，其他中子源都提供短中子脉冲。为了使适应这种新类型的源的方法和技术的发展，以及在ESS的第一台仪器的建设，测试光束线（TBL）的设计和建造在BER II研究反应堆在亥姆霍兹-Zentrum柏林（HZB）。操作TBL应提供宝贵的经验，以便在ESS处顺利开始操作。光束线能够通过双斩波器系统模拟ESS脉冲结构，并通过专用波长帧倍增（WFM）斩波器系统在1.6 kHz和10 kHz之间的宽波长带内提供低至0.5%的可变波长分辨率。WFM被提议用于几个ESS仪器，以允许灵活的飞行时间分辨率。因此，ESS将受益于TBL，它为测试方法和组件提供了独特的可能性。本文介绍了仪器的主要功能，其性能的实验验证在调试过程中，其相关性，目前开始的ESS仪器项目。
The European Spallation Source (ESS), scheduled to start operation in 2020, is aiming to deliver the most intense neutron beams for experimental research of any facility worldwide. Its long pulse time structure implies significant differences for instrumentation compared to other spallation sources which, in contrast, are all providing short neutron pulses. In order to enable the development of methods and technology adapted to this novel type of source well in advance of the first instruments being constructed at ESS, a test beamline (TBL) was designed and built at the BER II research reactor at Helmholtz-Zentrum Berlin (HZB). Operating the TBL shall provide valuable experience in order to allow for a smooth start of operations at ESS. The beamline is capable of mimicking the ESS pulse structure by a double chopper system and provides variable wavelength resolution as low as 0.5% over a wide wavelength band between 1.6 Å and 10 Å by a dedicated wavelength frame multiplication (WFM) chopper system. WFM is proposed for several ESS instruments to allow for flexible time-of-flight resolution. Hence, ESS will benefit from the TBL which offers unique possibilities for testing methods and components. This article describes the main capabilities of the instrument, its performance as experimentally verified during the commissioning, and its relevance to currently starting ESS instrumentation projects.
日本 J-PARC 散裂中子源 (JSNS)
影响因子：
--
作者：
Masatoshi Arai;Fujio Maekawa
通讯作者：
Fujio Maekawa