Phenolic Multigap RPCs for high-rate particle triggers in the CMS experiment

Lee, Kyong Sei

doi:10.22323/1.159.0018

Cited by 3 publications

(3 citation statements)

References 3 publications

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“…However, the present design of the endcap RPCs, made of a double High Pressure Laminate (HPL) gas gap and operating in avalanche mode, is not expected to be suitable for the particle rates amounting to several tens of kHz/cm 2 in the scenario of an LHC luminosity going up to 10 34−35 cm −2 s −1 . Dedicated R&D activities to identify suitable technologies to instrument that particular endcap region during LS2 are ongoing, see for instance [4,5]. …”

Section: Introductionmentioning

confidence: 99%

The upgrade of the CMS RPC system during the first LHC long shutdown

et al. 2013

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The CMS muon system includes in both the barrel and endcap region Resistive Plate Chambers (RPC). They mainly serve as trigger detectors and also improve the reconstruction of muon parameters. Over the years, the instantaneous luminosity of the Large Hadron Collider gradually increases. During the LHC Phase 1 (∼ first 10 years of operation) an ultimate luminosity is expected above its design value of 10 34 cm −2 s −1 at 14 TeV. To prepare the machine and also the experiments for this, two long shutdown periods are scheduled for 2013-2014 and 2018-2019. The CMS Collaboration is planning several detector upgrades during these long shutdowns. In particular, the muon detection system should be able to maintain a low-p T threshold for an efficient Level-1 Muon Trigger at high particle rates. One of the measures to ensure this, is to extend the present RPC system with the addition of a 4th layer in both endcap regions. During the first long shutdown, these two new stations will be equipped in the region |η| < 1.6 with 144 High Pressure Laminate (HPL) double-layer RPCs operating in avalanche mode, with a similar design as the existing CMS endcap chambers. Here, we present the upgrade plans for the CMS RPC system for the fist long shutdown, including trigger simulation studies for the extended system, and details on the new HPL production, the chamber assembly and the quality control procedures.

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Section: Introductionmentioning

confidence: 99%

The upgrade of the CMS RPC system during the first LHC long shutdown

et al. 2013

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“…The electrodes of the MRPCs used in most of the experiments are made of glass. Parallel efforts are also being given to developing MRPC with bakelite electrodes [4][5][6]. The bakelite sheets used to develop MRPC have been treated with oil to reduce noise [5].…”

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confidence: 99%

“…Parallel efforts are also being given to developing MRPC with bakelite electrodes [4][5][6]. The bakelite sheets used to develop MRPC have been treated with oil to reduce noise [5]. We have given an effort to develop the MRPC modules without any kind of oil treatment.…”

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confidence: 99%

Performance studies of oil-free bakelite multi-gap resistive plate chamber with cosmic rays

et al. 2019

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The Multi-gap Resistive Plate Chamber (MRPC) is an upgraded version of Resistive Plate Chamber (RPC) with excellent time resolution. They have found suitable applications in several High Energy Physics (HEP) experiments and also in medical physics like Positron Emission Tomography (PET) imaging. We have successfully developed and tested with cosmic rays a prototype MRPC using bakelite sheets without any oil treatment. In this document, we report the cosmic ray test performance of the second similar prototype. This effort is towards the development of a prototype set-up for PET imaging in Medical

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The phase 1 extension of the CMS endcap Resistive Plate Chamber system

Tytgat¹

2012

Proceedings of XI Workshop on Resistive Plate Chambers and Related Detectors — PoS(RPC2012)

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During the first two long shutdowns of the Large Hadron Collider which are presently scheduled for 2013/2014 and 2018/2019, several detector upgrades are foreseen by the CMS Collaboration to prepare for the ultimate luminosity of more than 10 34 cm −2 s −1 at 14 TeV that should be achieved during the first 10 year period of the accelerator (LHC Phase 1). In particular, the present Resistive Plate Chamber (RPC) detector will be enlarged with the addition of a 4th layer in the endcap region, on either side of the CMS detector. Such an extension is required to be able to preserve a low-p T threshold for the Level-1 Muon Trigger at the expected high instantaneous luminosity. During the first long shutdown, these new endcap stations will be equipped in the region |η| < 1.6 with 144 High Pressure Laminate (HPL) double-gap RPCs operating in avalance mode, with a similar design as the existing CMS endcap chambers. The present phase-1 upgrade plans for the CMS RPC system will be presented, including trigger simulation studies for the extended system, and details on the new HPL production, the chamber assembly and the quality control procedures.

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Phenolic Multigap RPCs for high-rate particle triggers in the CMS experiment

Cited by 3 publications

References 3 publications

The upgrade of the CMS RPC system during the first LHC long shutdown

The upgrade of the CMS RPC system during the first LHC long shutdown

Performance studies of oil-free bakelite multi-gap resistive plate chamber with cosmic rays

The phase 1 extension of the CMS endcap Resistive Plate Chamber system

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