LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 5 of total 5

Search options

  1. Book ; Online: Environment-friendly gas mixtures for Resistive Plate Chambers

    Bianchi, A. / Delsanto, S. / Dupieux, P. / Ferretti, A. / Gagliardi, M. / Joly, B. / Manen, S. P. / Marchisone, M. / Micheletti, L. / Quaglia, L. / Rosano, A. / Terlizzi, L. / Vercellin, E.

    an experimental and simulation study

    2020  

    Abstract: Resistive Plate Chambers (RPC) have shown stable operation at the Large Hadron Collider and satisfactory efficiency for the entire Run 1 (2010-2013) and Run 2 (2015-2018) with C$_{2}$H$_{2}$F$_{4}$-based gas mixtures and the addition of SF$_{6}$ and i-C$ ... ...

    Abstract Resistive Plate Chambers (RPC) have shown stable operation at the Large Hadron Collider and satisfactory efficiency for the entire Run 1 (2010-2013) and Run 2 (2015-2018) with C$_{2}$H$_{2}$F$_{4}$-based gas mixtures and the addition of SF$_{6}$ and i-C$_{4}$H$_{10}$. Since its global warming potential (GWP) is high, C$_{2}$H$_{2}$F$_{4}$ is phasing out of production due to recent European Union regulations and as a result its cost is progressively increasing. Therefore, finding a new RPC gas mixture with a low GWP has become extremely important. This contribution describes the simulation of the RPC efficiency with tetrafluoropropene C$_{3}$H$_{2}$F$_{4}$ (HFO1234ze), a hydrofluoroolefin with very low GWP. Simulation results are systematically compared with measurements of RPC efficiency in C$_{3}$H$_{2}$F$_{4}$-based gas mixtures with the addition of different combinations of Ar, He, CO$_{2}$, O$_{2}$ and i-C$_{4}$H$_{10}$ in various concentrations. This simulation allows the study of the interplay between C$_{3}$H$_{2}$F$_{4}$ and the other gas components in the mixture as well as may allow the identification of the most promising environment-friendly gas mixtures with C$_{3}$H$_{2}$F$_{4}$ for RPCs.

    Comment: 15th Workshop on Resistive Plate Chambers and Related Detectors (RPC 2020)
    Keywords Physics - Instrumentation and Detectors
    Subject code 621
    Publishing date 2020-05-04
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

    More links

    Kategorien

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  2. Book ; Online: Studies on tetrafluoropropene-based gas mixtures with low environmental impact for Resistive Plate Chambers

    Bianchi, A. / Delsanto, S. / Dupieux, P. / Ferretti, A. / Gagliardi, M. / Joly, B. / Manen, S. P. / Marchisone, M. / Micheletti, L. / Rosano, A. / Vercellin, E.

    2020  

    Abstract: Gaseous detectors are widely used in high-energy physics experiments, and in particular at the CERN Large Hadron Collider (LHC), to provide tracking and triggering over large volumes. It has been recently estimated that Resistive Plate Chambers (RPC), ... ...

    Abstract Gaseous detectors are widely used in high-energy physics experiments, and in particular at the CERN Large Hadron Collider (LHC), to provide tracking and triggering over large volumes. It has been recently estimated that Resistive Plate Chambers (RPC), used for muon detection, have the highest contribution on the overall greenhouse gas (GHG) emissions at the LHC experiments. Gas mixtures for RPCs are mainly made of C$_{2}$H$_{2}$F$_{4}$, which is a greenhouse gas with a high environmental impact in the atmosphere. C$_{2}$H$_{2}$F$_{4}$ is already phasing out of production, due to recent European Union (EU) regulations, and its cost is expected to increase in the near future. Therefore, finding alternative gas mixtures made of gas components with a low Global Warming Potential (GWP) has become extremely important for limiting the GHG emissions as well as for economic reasons. The novel hydrofluoroolefins are likely appropriate candidates to replace C$_{2}$H$_{2}$F$_{4}$ due to their similar chemical structures. This study is focused on the characterization of innovative gas mixtures with tetrafluoropropene HFO1234ze(E) (C$_{3}$H$_{2}$F$_{4}$) that is one of the most eco-friendly hydrofluoroolefins, thanks to its very low GWP. HFO1234ze(E)-based gas mixtures with the addition of Ar, N$_{2}$, O$_{2}$ and CO$_{2}$ are extensively discussed in this paper as well as the role of i-C$_{4}$H$_{10}$ and SF$_{6}$ in such mixtures.

    Comment: 15th Topical Seminar on Innovative Particle and Radiation Detectors (IPRD19)
    Keywords Physics - Instrumentation and Detectors
    Subject code 621
    Publishing date 2020-01-28
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

    More links

    Kategorien

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  3. Book ; Online: Characterization of tetrafluoropropene-based gas mixtures for the Resistive Plate Chambers of the ALICE muon spectrometer

    Bianchi, A. / Delsanto, S. / Dupieux, P. / Ferretti, A. / Gagliardi, M. / Joly, B. / Manen, S. P. / Marchisone, M. / Micheletti, L. / Rosano, A. / Vercellin, E.

    2019  

    Abstract: The muon identification system of the ALICE experiment at the CERN LHC is based on Resistive Plate Chamber (RPC) detectors. These RPCs are operated in the so-called maxi-avalanche mode with a gas mixture made of tetrafluoroethane (C$_{2}$H$_{2}$F$_{4}$), ...

    Abstract The muon identification system of the ALICE experiment at the CERN LHC is based on Resistive Plate Chamber (RPC) detectors. These RPCs are operated in the so-called maxi-avalanche mode with a gas mixture made of tetrafluoroethane (C$_{2}$H$_{2}$F$_{4}$), sulfur hexafluoride (SF$_{6}$) and isobutane (i-C$_{4}$H$_{10}$). All of these components are greenhouse gases: in particular, the first two gases are already phasing out of production, due to recent European Union regulations, and their cost is progressively increasing. Therefore, finding a new eco-friendly gas mixture has become extremely important in order to reduce the impact of the RPC operation on the environment, and for economic reasons. Due to the similar chemical structure, hydrofluoroolefins appear appropriate candidates to replace C$_{2}$H$_{2}$F$_{4}$ thanks to their very low GWPs, especially tetrafluoropropene (C$_{3}$H$_{2}$F$_{4}$) with the trade name HFO1234ze. In order to identify an eco-friendly gas mixture fulfilling the requirements for operation in the ALICE environment in the coming years, a dedicated experimental set-up has been built to carry out R&D studies on promising gas mixtures. Measurements have been performed with a small-size RPC equipped with the front-end electronics, providing signal amplification, developed for ALICE operation at high luminosity after the LHC Long Shutdown 2. HFO1234ze-based mixtures with the addition of CO$_{2}$ are discussed in this paper as well as the role of i-C$_{4}$H$_{10}$ and SF$_{6}$ as quenchers in such mixtures.
    Keywords Physics - Instrumentation and Detectors ; High Energy Physics - Experiment
    Subject code 621
    Publishing date 2019-07-07
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

    More links

    Kategorien

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  4. Book ; Online: High-rate tests on Resistive Plate Chambers operated with eco-friendly gas mixtures

    Abbrescia, M. / Aielli, G. / Aly, R. / Arena, M. C. / Barroso, M. / Benussi, L. / Bianco, S. / Bordon, F. / Boscherini, D. / Bruni, A. / Buontempo, S. / Busato, M. / Camarri, P. / Cardarelli, R. / Congedo, L. / Damiao, D. De Jesus / De Serio, M. / Di Ciaccio, A. / Di Stante, L. /
    Dupieux, P. / Eysermans, J. / Ferretti, A. / Galati, G. / Gagliardi, M. / Guida, R. / Iaselli, G. / Joly, B. / Lee, K. S. / Liberti, B. / Ramirez, D. Lucero / Mandelli, B. / Manen, S. P. / Massa, L. / Pastore, A. / Pastori, E. / Piccolo, D. / Pizzimento, L. / Polini, A. / Proto, G. / Pugliese, G. / Quaglia, L. / Ramos, D. / Rigoletti, G. / Rocchi, A. / Romano, M. / Samalan, A. / Salvini, P. / Santonico, R. / Saviano, G. / Simone, S. / Terlizzi, L. / Tytgat, M. / Vercellin, E. / Verzeroli, M. / Zaganidis, N.

    2023  

    Abstract: Results obtained by the RPC ECOgas@GIF++ Collaboration, using Resistive Plate Chambers operated with new, eco-friendly gas mixtures, based on Tetrafluoropropene and carbon dioxide, are shown and discussed in this paper. Tests aimed to assess the ... ...

    Abstract Results obtained by the RPC ECOgas@GIF++ Collaboration, using Resistive Plate Chambers operated with new, eco-friendly gas mixtures, based on Tetrafluoropropene and carbon dioxide, are shown and discussed in this paper. Tests aimed to assess the performance of this kind of detectors in high-irradiation conditions, analogous to the ones foreseen for the coming years at the Large Hadron Collider experiments, were performed, and demonstrate a performance basically similar to the one obtained with the gas mixtures currently in use, based on Tetrafluoroethane, which is being progressively phased out for its possible contribution to the greenhouse effect. Long term aging tests are also being carried out, with the goal to demonstrate the possibility of using these eco-friendly gas mixtures during the whole High Luminosity phase of the Large Hadron Collider.

    Comment: Submitted to European Physical Journal C on October 24, 2023, 15 pages, 14 figures
    Keywords Physics - Instrumentation and Detectors ; High Energy Physics - Experiment
    Subject code 621
    Publishing date 2023-11-14
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

    More links

    Kategorien

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  5. Book ; Online: Preliminary results on the long term operation of RPCs with eco-friendly gas mixtures under irradiation at the CERN Gamma Irradiation Facility

    Quaglia, L. / Ramos, D. / Abbrescia, M. / Aielli, G. / Aly, R. / Arena, M. C. / Barroso, M. / Benussi, L. / Bianco, S. / Boscherini, D. / Bordon, F. / Bruni, A. / Buontempo, S. / Busato, M. / Camarri, P. / Cardarelli, R. / Congedo, L. / Damiao, D. De Jesus / De Serio, M. /
    Di Ciacco, A. / Di Stante, L. / Dupieux, P. / Eysermans, J. / Ferretti, A. / Galati, G. / Gagliardi, M. / Garetti, S. / Guida, R. / Iaselli, G. / Joly, B. / Juks, S. A. / Lee, K. S. / Liberti, B. / Ramirez, D. Lucero / Mandelli, B. / Manen, S. P. / Massa, L. / Pastore, A. / Pastori, E. / Piccolo, D. / Pizzimento, L. / Polini, A. / Proto, G. / Pugliese, G. / Rigoletti, G. / Rocchi, A. / Romano, M. / Samalan, A. / Salvini, P. / Santonico, R. / Saviano, G. / Sessa, M. / Simone, S. / Terlizzi, L. / Tytgat, M. / Vercellin, E. / Verzeroli, M. / Zaganidis, N.

    2023  

    Abstract: Since 2019 a collaboration between researchers from various institutes and experiments (i.e. ATLAS, CMS, ALICE, LHCb/SHiP and the CERN EP-DT group), has been operating several RPCs with diverse electronics, gas gap thicknesses and detector layouts at the ...

    Abstract Since 2019 a collaboration between researchers from various institutes and experiments (i.e. ATLAS, CMS, ALICE, LHCb/SHiP and the CERN EP-DT group), has been operating several RPCs with diverse electronics, gas gap thicknesses and detector layouts at the CERN Gamma Irradiation Facility (GIF++). The studies aim at assessing the performance of RPCs when filled with new eco-friendly gas mixtures in avalanche mode and in view of evaluating possible ageing effects after long high background irradiation periods, e.g. High-Luminosity LHC phase. This challenging research is also part of a task of the European AidaInnova project. A promising eco-friendly gas identified for RPC operation is the tetrafluoruropropene (C$_{3}$H$_{2}$F$_{4}$, commercially known as HFO-1234ze) that has been studied at the CERN GIF++ in combination with different percentages of CO$_2$. Between the end of 2021 and 2022 several beam tests have been carried out to establish the performance of RPCs operated with such mixtures before starting the irradiation campaign for the ageing study. Results of these tests for different RPCs layouts and different gas mixtures, under increasing background rates are presented here, together with the preliminary outcome of the detector ageing tests.
    Keywords Physics - Instrumentation and Detectors ; High Energy Physics - Experiment
    Subject code 621
    Publishing date 2023-11-29
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    Full text online

    More links

    Kategorien

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

To top