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arXiv 1603.09508physics.ins-dethep-ex
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高亮度LHC升级用高计数率漂移管探测器的性能

Performance of Drift-Tube Detectors at High Counting Rates for High-Luminosity LHC Upgrades

Bernhard Bittner, Joerg Dubbert, Oliver Kortner, Hubert Kroha, Alessandro Manfredini, Sebastian Nowak, Sebastian Ott, Robert Richter, Philipp Schwegler, Daniele… 展开作者

Bernhard Bittner, Joerg Dubbert, Oliver Kortner, Hubert Kroha, Alessandro Manfredini, Sebastian Nowak, Sebastian Ott, Robert Richter, Philipp Schwegler, Daniele Zanzi, Otmar Biebel, Ralf Hertenberger, Alexander Ruschke, Andre Zibell

摘要:

在欧洲核子研究中心的伽马辐照设施(GIF)和慕尼黑范德格拉夫串列加速器的20 MeV强质子束中研究了加压漂移管探测器在非常高的背景速率下的性能,以应用于大型强子对撞机(LHC)高亮度升级的大面积精确μ介子跟踪。ATLAS μ子漂移管(MDT)室与30毫米管直径的设计,以应付和中子背景命中率高达500赫兹/平方厘米。在LHC升级时,本底率预计将达到14 kHz/cm 2。使用标准MDT读出电子设备的测试结果表明,漂移管直径减小到15 mm,同时保持操作参数不变,大大提高了速率能力,远远超出了要求。用于LHC升级的新的小直径μ介子漂移管(sMDT)室的开发已经完成。在高计数率下的跟踪效率和空间分辨率的进一步改进将通过采用针对高计数率的改进的信号整形的升级的读出电子器件来实现。

英文摘要:

The performance of pressurized drift-tube detectors at very high background rates has been studied at the Gamma Irradiation Facility (GIF) at CERN and in an intense 20 MeV proton beam at the Munich Van-der-Graaf tandem accelerator for applications in large-area precision muon tracking at high-luminosity upgrades of the Large Hadron Collider (LHC). The ATLAS muon drifttube (MDT) chambers with 30 mm tube diameter have been designed to cope with and neutron background hit rates of up to 500 Hz/square cm. Background rates of up to 14 kHz/square cm are expected at LHC upgrades. The test results with standard MDT readout electronics show that the reduction of the drift-tube diameter to 15 mm, while leaving the operating parameters unchanged, vastly increases the rate capability well beyond the requirements. The development of new small-diameter muon drift-tube (sMDT) chambers for LHC upgrades is completed. Further improvements of tracking efficiency and spatial resolution at high counting rates will be achieved with upgraded readout electronics employing improved signal shaping for high counting rates.

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