Multi-strip MRPCs for FOPI
Multi-strip MRPCs for FOPI
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DOI：
10.1016/j.nima.2008.12.088
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发表时间：
2009-05
影响因子：
1.4
通讯作者：
A. Schüttauf;M. Ciobanu;K. Hildenbrand;M. Kis;I. Deppner;N. Herrmann;Yongsung Kim;T. I. Kang;P. Koczoń;X. Lopez;Y. Leifels;M. Petrovici;K. Piasecki;A. Reischl;W. Reisdorf;M. Ryu;V. Simion;N. Zernezki;X. Zhang
中科院分区：
文献类型：
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作者：
A. Schüttauf;M. Ciobanu;K. Hildenbrand;M. Kis;I. Deppner;N. Herrmann;Yongsung Kim;T. I. Kang;P. Koczoń;X. Lopez;Y. Leifels;M. Petrovici;K. Piasecki;A. Reischl;W. Reisdorf;M. Ryu;V. Simion;N. Zernezki;X. Zhang
在过去的几年里，FOPI 开发了一种新的 ToF 系统，作为基于多带多间隙电阻板室 (MMRPC) 的现有探测器的升级。目的是将带电 Kaon 识别提高到 1GeV/c 的实验室动量，并增强方位角探测器的粒度。新型 ToF 镜筒的有效面积为 5m2，具有 2400 个单独的条带 (900×1.6mm2) [A. Schüttauf 等人，Nucl。物理。 B 158 (2006) 52] 由定制设计的电子设备在两侧读出 [M. B 158 (2006) 52] Ciobanu 等人，IEEE Trans。核。科学。 NS-54 (4) (2007) 1201； K. Koch 等人，IEEE Trans。核。科学。 NS-52(3) (2005) 745]。为了达到设想的目标，在 1-1.3m 的飞行路径上需要 100ps 的时间分辨率。由于 K−at SIS 能量的产生很少，MMRPC 的效率必须高于 95%。我们报告大规模生产线上的探测器和电子设备的测量结果。为此，我们使用 2.0 和 1.25GeV、速率在 0.1 和 5kHz/cm2 之间的质子束来确定 MMRPC 的定时、效率和速率能力。
During the last years FOPI has developed a new ToF system as an upgrade of the existing detector based on Multi-strip Multi-gap Resistive Plate Chambers (MMRPCs). The intention is to increase the charged Kaon identification up to a laboratory momentum of 1GeV/c and to enhance the azimuthal detector granularity. The new ToF barrel has an active area of 5m2with 2400 individual strips (900×1.6mm2) [A. Schüttauf, et al., Nucl. Phys. B 158 (2006) 52] which are read out on both sides by a custom designed electronics [M. Ciobanu, et al., IEEE Trans. Nucl. Sci. NS-54 (4) (2007) 1201; K. Koch, et al., IEEE Trans. Nucl. Sci. NS-52(3) (2005) 745]. To reach the envisaged goal a time resolution of 100ps is needed, at a flight path of 1–1.3m. Due to the rare production of the K−at SIS energies the efficiency of the MMRPCs has to be above 95%. We report on measurements with the detectors and electronics from the mass production line. For this purpose we used a proton beam at 2.0 and 1.25GeV, at rates between 0.1 and 5kHz/cm2to determine the timing, efficiency and rate capability of the MMRPCs.