Test beam results of the GE1/1 prototype for a future upgrade of the CMS high-&amp;#x03B7; muon system

Abbaneo, D.; Abbrescia, M.; Armagnaud, C.; Aspell, P.; Bagliesi, Maria Grazia; Ban, Y.; Bally, S.; Benussi, L.; Berzano, U.; Bianco, S.; Bos, J.; Buńkowski, K.; Cai, J.; Cecchi, Roberto; Chatelain, J. P.; Christiansen, J.; Colafranceschi, S.; Colaleo, A.; Garcia, A. Conde; David, E.; Robertis, G. De; Oliveira, Rui de; Pinto, S. Duarte; Ferry, S.; Formenti, F.; Franconi, L.; Gnanvo, K.; Gutiérrez, A.; Hohlmann, M.; Karchin, P. E.; Loddo, F.; Magazzù, G.; Maggi, M.; Marchioro, A.; Marinov, A.; Mehta, K.; Merlin, J. A.; Mohapatra, A.; Moulik, T.; Nemallapudi, M. V.; Nuzzo, S.; Oliveri, E.; Piccolo, D.; Postema, H.; Raffone, G.; Rodrigues, A. Malta; Ropelewski, L.; Saviano, G.; Sharma, A.; Staib, M. J.; Teng, H.; Tytgat, M.; Tupputi, S. A.; Turini, N.; Smilkjovic, N.; Villa, M.; Zaganidis, N.; Zientek, M.

doi:10.1109/nssmic.2011.6154688

Cited by 5 publications

(5 citation statements)

References 8 publications

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“…A movable aluminum support structure enables translations in φ and η directions to allow beam alignment with different GE1/1 readout sectors. The test beam setups used in earlier test campaigns can be found in [8,9,14]. The trigger counters S1, S2, and S3 are organic plastic scintillators with discriminated outputs.…”

Section: Test Setupmentioning

confidence: 99%

See 1 more Smart Citation

Performance of prototype GE1∕1 chambers for the CMS muon spectrometer upgrade

Abbas¹,

Abbrescia²,

Abdalla³

et al. 2020

Nuclear Instruments and Methods in Physics Research Section A:

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The high-luminosity phase of the Large Hadron Collider (HL-LHC) will result in ten times higher particle background than measured during the first phase of LHC operation. In order to fully exploit the highly-demanding operating conditions during HL-LHC, the Compact Muon Solenoid (CMS) Collaboration will use Gas Electron Multiplier (GEM) detector technology. The technology will be integrated into the innermost region of the forward muon spectrometer of CMS as an additional muon station called GE1/1. The primary purpose of this auxiliary station is to help in muon reconstruction and to control level-1 muon trigger rates in the pseudo-rapidity region 1.6 < |η| < 2.2. The new station will contain trapezoidal-shaped GEM detectors called GE1/1 chambers. The design of these chambers is finalized, and the installation is in progress during the Long Shutdown phase two (LS-2) that started in 2019. Several full-size prototypes were built and operated successfully in various test beams at CERN. We describe performance measurements such as gain, efficiency, and time resolution of these prototype chambers, developed after years of R&D, and summarize their behavior in different gas compositions as a function of the applied voltage.

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Section: Test Setupmentioning

confidence: 99%

“…The tracking telescope, developed by the RD51 Collaboration [8], consists of three 10 cm × 10 cm GEM detectors with strip-based two-dimensional readout planes. The GE1/1 chambers are aligned perpendicular to the direction of the muon beam and placed downstream of the tracking telescope.…”

Section: Test Setupmentioning

confidence: 99%

Performance of prototype GE1∕1 chambers for the CMS muon spectrometer upgrade

Abbas¹,

Abbrescia²,

Abdalla³

et al. 2020

Nuclear Instruments and Methods in Physics Research Section A:

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“…The conceived experimental beam-test setup used a similar tracking telescope as developed by RD51 Collaboration [5]. The tracker consists of three organic plastic scintillators S1, S2 and S3, three 10 cm × 10 cm GEM detectors and a movable aluminum structure (Figure 9).…”

Section: Tracking Telescopementioning

confidence: 99%

“…The movable structure provides the support to the entire tracking as well as to triggering system and also enables the translations in φ and η directions to allow the beam alignment with different GE1/1 readout sectors. The test beam setups used in various earlier test campaigns can be found in [5,6,10].…”

Section: Tracking Telescopementioning

confidence: 99%

Performance of prototype GE1/1 chambers for the CMS muon spectrometer upgrade

2019

Preprint

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The high-luminosity phase of the Large Hadron Collider (HL-LHC) will result in particle backgrounds ten times higher than its current value. In order to fully exploit the highly-demanding operating conditions during HL-LHC, the Compact Muon Solenoid (CMS) Collaboration has proposed the use of Gas Electron Multiplier (GEM) detector technology. The technology will be integrated into the innermost region of the forward muon spectrometer of the CMS as the additional muon station in the form of GE1/1. The primary purpose of this auxiliary station is to help in muon reconstruction and to control level-1 muon trigger rates in the pseudo-rapidity region of 1.6 < |η| < 2.2. The new station will be embellished with specific trapezoidal shaped GEM detectors known as GE1/1 chambers. The design of these chambers is finalized, and the installation is foreseen during the Long Shutdown phase two (LS-2) starting at the beginning of 2019. Several full size prototypes were built and operated successfully in various beam tests at CERN. We describe the performance measurements such as gain, efficiency, and timing resolution of such chambers after years of R&D and summarize their behavior in different gas compositions as a function of the voltage fed to the HV divider chain that feeds the different electrodes.

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“…The induced signal on the readout depends mainly on the number of primary electrons released by the charged particles in the induction field. The triple-GEMs have a trapezoidal shaped active area of 990 mm × (220-455) mm 2 with a configuration of 3/1/2/1 mm which corresponds to the drift, the first transfer, the second transfer, and induction field, respectively [6]. An avalanche of electrons is created through the holes because of the very high electric field, which is shown in the figure 2 -2 -…”

Section: Gem Technology For Cmsmentioning

confidence: 99%

Quality control and beam test of GEM detectors for future upgrades of the CMS muon high rate region at the LHC

Abbaneo¹,

Abbas²,

Abbrescia³

et al. 2015

J. Inst.

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Gas Electron Multipliers (GEM) are a proven position sensitive gas detector technology which nowadays is becoming more widely used in High Energy Physics. GEMs offer an excellent spatial resolution and a high particle rate capability, with a close to 100% detection efficiency. In view of the high luminosity phase of the CERN Large Hadron Collider, these aforementioned features make GEMs suitable candidates for the future upgrades of the Compact Muon Solenoid (CMS) detector. In particular, the CMS GEM Collaboration proposes to cover the high-eta region of the muon system with large-area triple-GEM detectors, which have the ability to provide robust and redundant tracking and triggering functions. In this contribution, after a general introduction and overview of the project, the construction of full-size trapezoidal triple-GEM prototypes will be described in more detail. The procedures for the quality control of the GEM foils, including gain uniformity measurements with an x-ray source will be presented. In the past few years, several CMS triple-GEM prototype detectors were operated with test beams at the CERN SPS. The results of these test beam campaigns will be summarised.

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Test beam results of the GE1/1 prototype for a future upgrade of the CMS high-η muon system

Cited by 5 publications

References 8 publications

Performance of prototype GE1∕1 chambers for the CMS muon spectrometer upgrade

Performance of prototype GE1∕1 chambers for the CMS muon spectrometer upgrade

Performance of prototype GE1/1 chambers for the CMS muon spectrometer upgrade

Quality control and beam test of GEM detectors for future upgrades of the CMS muon high rate region at the LHC

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