S. Colafranceschi
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View article: A standalone simulation program for Resistive Cylindrical Chamber (RCC)
A standalone simulation program for Resistive Cylindrical Chamber (RCC) Open
In recent years, the Resistive Cylindrical Chamber (RCC) has been introduced as a novel gaseous detector, extending the well-established Resistive Plate Chambers (RPCs) to the case of cylindrical electrode geometry. Preliminary experimenta…
View article: Study on discharge and short circuit generation in CMS GE1/1 triple-GEM detectors during Run 3
Study on discharge and short circuit generation in CMS GE1/1 triple-GEM detectors during Run 3 Open
The installation of the new GE1/1 station of Gas Electron Multiplier (GEM) detectors in the Compact Muon Solenoid (CMS) experiment was completed during the Long Shutdown 2 (LS2) phase of the Large Hadron Collider (LHC). The GE1/1 station h…
View article: Status of the production of GEM chambers for the CMS experiment at Large Hadron Collider
Status of the production of GEM chambers for the CMS experiment at Large Hadron Collider Open
The High Luminosity LHC phase includes an upgrade to the muon stations for the CMS Experiment. CMS trigger and muon identification performance will be crucial, and it is, therefore, necessary to install new GEM stations to extend acceptanc…
View article: Impact of magnetic field on the stability of the CMS GE1/1 GEM detector operation
Impact of magnetic field on the stability of the CMS GE1/1 GEM detector operation Open
The Gas Electron Multiplier (GEM) detectors of the GE1/1 station of the CMS experiment have been operated in the CMS magnetic field for the first time on the 7 th of October 2021. During the magnetic field ramps, several discharge phenomen…
View article: Construction of an RPC using additive manufacturing technology
Construction of an RPC using additive manufacturing technology Open
In this work, we report the progress in the design and construction of an RPC detector fully built using additive manufacturing technology, an emerging/interdisciplinary engineering domain only partially utilized in HEP. Our novel design o…
View article: Upgrade of the CMS resistive plate chambers for the high luminosity LHC
Upgrade of the CMS resistive plate chambers for the high luminosity LHC Open
During the upcoming High Luminosity phase of the Large Hadron Collider (HL-LHC), the integrated luminosity of the accelerator will increase to 3000 fb −1 . The expected experimental conditions in that period in terms of background rates, e…
View article: Performance of a triple-GEM demonstrator in pp collisions at the CMS detector
Performance of a triple-GEM demonstrator in pp collisions at the CMS detector Open
After the Phase-2 high-luminosity upgrade to the Large Hadron Collider (LHC), the collision rate and therefore the background rate will significantly increase, particularly in the high η region. To improve both the tracking and triggering …
View article: CMS RPC background — studies and measurements
CMS RPC background — studies and measurements Open
The expected radiation background in the CMS RPC system has been studied using the MC prediction with the CMS FLUKA simulation of the detector and the cavern. The MC geometry used in the analysis describes very accurately the present RPC s…
View article: The Case for a Cost-Effective General-Purpose Computer Cluster for Small Colleges
The Case for a Cost-Effective General-Purpose Computer Cluster for Small Colleges Open
The computational capabilities of commercial CPUs and GPUs reached a plateau but soft-ware applications are usually memory-intense tasks and they commonly need/utilize most recent hardware developments. Computer clusters are an expensive s…
View article: Performance of a Triple-GEM Demonstrator in $pp$ Collisions at the CMS \n Detector
Performance of a Triple-GEM Demonstrator in $pp$ Collisions at the CMS
\n Detector Open
After the Phase-2 high-luminosity upgrade to the Large Hadron Collider (LHC),
\nthe collision rate and therefore the background rate will significantly
\nincrease, particularly in the high $\\eta$ region. To improve both the tracking
\nand…
View article: Aging study on Resistive Plate Chambers of the CMS Muon Detector for HL-LHC
Aging study on Resistive Plate Chambers of the CMS Muon Detector for HL-LHC Open
In the High Luminosity Large Hadron Collider (HL-LHC) program, during the next years, the instantaneous luminosity will increase up to 5 x 10(34) cm(-2) s(-1) which means a factor five higher than the nominal LHC luminosity. In that period…
View article: CMS RPC activities during LHC LS-2
CMS RPC activities during LHC LS-2 Open
The second LHC long shutdown period (LS2) is an important opportunity for the CMS Resistive Plate Chambers (RPC) to complete their consolidation and upgrade projects. The consolidation includes detector maintenance for gas tightness, HV (h…
View article: Triple-GEM discharge probability studies at CHARM: simulations and experimental results
Triple-GEM discharge probability studies at CHARM: simulations and experimental results Open
The CMS muon system in the region with 2.03
View article: Two years’ test of a temperature sensing system based on fibre Bragg grating technology for the CMS GE1/1 detectors
Two years’ test of a temperature sensing system based on fibre Bragg grating technology for the CMS GE1/1 detectors Open
A temperature monitoring system based on fibre Bragg grating (FBG) fibre optic sensors has been developed for the gas electron multiplier (GEM) chambers of the Compact Muon Solenoid (CMS) detector. The monitoring system was tested in proto…
View article: Detector Control System for the GE1/1 slice test
Detector Control System for the GE1/1 slice test Open
Gas Electron Multiplier (GEM) technology, in particular triple-GEM, was selected for the upgrade of the CMS endcap muon system following several years of intense effort on R&D. The triple-GEM chambers (GE1/1) are being installed at station…
View article: CMS RPC Background -- Studies and Measurements
CMS RPC Background -- Studies and Measurements Open
The expected radiation background in the CMS RPC system has been studied using the MC prediction with the CMS FLUKA simulation of the detector and the cavern. The MC geometry used in the analysis describes very accurately the present RPC s…
View article: R&D of a real-size mosaic MRPC within the framework of the CMS muon upgrade
R&D of a real-size mosaic MRPC within the framework of the CMS muon upgrade Open
Based on previous experience and attempt, a real-size mosaic Multi-gap Resistive Plate Chamber (MRPC) has been developed within the framework of the CMS muon upgrade efforts. The chamber is a 5-gap with plates made each of 6 pieces of low …
View article: Operational Experience With the GEM Detector Assembly Lines for the CMS Forward Muon Upgrade
Operational Experience With the GEM Detector Assembly Lines for the CMS Forward Muon Upgrade Open
The CMS Collaboration has been developing large-area triple-gas electron multiplier (GEM) detectors to be installed in the muon Endcap regions of the CMS experiment in 2019 to maintain forward muon trigger and tracking performance at the H…
View article: Candidate eco-friendly gas mixtures for MPGDs
Candidate eco-friendly gas mixtures for MPGDs Open
Modern gas detectors for detection of particles require F-based gases for optimal performance. Recent regulations demand the use of environmentally unfriendly F-based gases to be limited or banned. This review studies properties of potenti…
View article: Quality control for the first large areas of triple-GEM chambers for the CMS endcaps
Quality control for the first large areas of triple-GEM chambers for the CMS endcaps Open
The CMS Collaboration plans to equip the very forward muon system with triple-GEM detectors that can withstand the environment of the High-Luminosity LHC. This project is at the final stages of R&D and moving to production. An unprecedente…
View article: A novel application of Fiber Bragg Grating (FBG) sensors in MPGD
A novel application of Fiber Bragg Grating (FBG) sensors in MPGD Open
We present a novel application of Fiber Bragg Grating (FBG) sensors in the construction and characterisation of Micro Pattern Gaseous Detector (MPGD), with particular attention to the realisation of the largest triple (Gas electron Multipl…
View article: Low-mass GEM detector with radial zigzag readout strips for forward tracking at the EIC
Low-mass GEM detector with radial zigzag readout strips for forward tracking at the EIC Open
We present design and construction of a large low-mass Triple-GEM detector prototype for forward tracking at a future Electron-Ion Collider. In this environment, multiple scattering of forward and backward tracks must be minimized so that …
View article: The Triple GEM Detector Control System for CMS forward muon spectrometer upgrade
The Triple GEM Detector Control System for CMS forward muon spectrometer upgrade Open
The CMS experiment at LHC will upgrade its forward muon spectrometer by incorporating Triple-GEM detectors. This upgrade referred to as GEM Endcap (GE1/1), consists of adding two back-to-back Triple-GEM detectors in front of the existing C…
View article: A new Slow Control and Run Initialization Byte-wise Environment (SCRIBE) for the quality control of mass-produced CMS GEM detectors
A new Slow Control and Run Initialization Byte-wise Environment (SCRIBE) for the quality control of mass-produced CMS GEM detectors Open
The CMS collaboration aims at improving the muon trigger and tracking performance at the HL-LHC by installing new Gas Electron Multiplier (GEM) chambers in the endcaps of the CMS experiment. Construction and commissioning of GEM chambers f…
View article: Detector control system and efficiency performance for CMS RPC at GIF++
Detector control system and efficiency performance for CMS RPC at GIF++ Open
In the framework of the High Luminosity LHC upgrade program, the CMS muon group built several different RPC prototypes that are now under test at the new CERN Gamma Irradiation Facility (GIF++). A dedicated Detector Control System has been…