2021-03-08 07:14 |
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2021-03-06 06:02 |
A fiber optic sensors monitoring system for the central beam pipe of the CMS experiment
/ Fienga, Francesco (CERN ; U. Naples (main) ; INFN, Naples) ; Szillasi, Zoltan (Debrecen, Inst. Nucl. Res.) ; Beni, Noemi (CERN) ; Irace, Andrea (Naples U.) ; Gaddi, Andrea (CERN) ; Zeuner, Wolfram (CERN) ; Ball, Austin (CERN) ; Buontempo, Salvatore (CERN ; INFN, Naples) ; Breglio, Giovanni (CERN ; U. Naples (main) ; INFN, Naples)
In this paper we describe the main characteristics and experimental results, recorded in more than four years of data acquisition, of a temperature and strain monitoring system, called i-pipe, based on Fiber Bragg Grating (FBG) sensors arrays applied for the first time to a sector of the Large Hadron Collider (LHC) at the European Organization for Nuclear Research (CERN): the central beam pipe (BP) of the Compact Muon Solenoid (CMS). The monitoring system, consisting of four arrays of 16 FBG sensors each, as better described in the text, is placed on four directives of the LHC section that passes inside the CMS experiment, namely the CMS central BP. [...]
2019 - 6 p.
- Published in : Opt. Laser Technol. 120 (2019) 105650
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2021-03-03 09:00 |
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2021-03-03 07:53 |
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2021-02-26 13:51 |
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2021-02-26 13:42 |
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2021-02-20 06:37 |
Incoherent electron cloud effects in the Large Hadron Collider
/ Paraschou, K (CERN ; Aristotle U., Thessaloniki) ; Iadarola, G (CERN)
During the operation of the Large Hadron Collider in 2018, the majority of physics data was collected with a beam energy of 6.5 TeV, a bunch spacing of 25 ns and with β-functions in the high luminosity interaction points equal to 30 cm. In this configuration, it was found through several experimental measurements that electron cloud induces a significant degradation of the beam lifetime. [...]
2020 - 7 p.
- Published in : 10.23732/CYRCP-2020-009.249
Fulltext: PDF;
In : ICFA mini-Workshop on Mitigation of Coherent Beam Instabilities in Particle Accelerators (MCBI 2019), Zermatt, Switzerland, 23 - 27 Sep 2019, pp.249-255 (CERN-2020-009)
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2021-02-20 06:37 |
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2021-02-20 06:37 |
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2021-02-20 06:37 |
Beam transfer function and stability diagram in the Large Hadron Collider
/ Tambasco, C (Ecole Polytechnique, Lausanne) ; Pieloni, T (Ecole Polytechnique, Lausanne) ; Buffat, X (CERN) ; Métral, E (CERN)
Predictions of transverse instability thresholds in the LHC are based on the computation of Landau damping by calculating the stability diagram (SD). However any modification of the tune spread and/or particle distribution modifies the expected Landau damping in the beams. [...]
2020 - 6 p.
- Published in : 10.23732/CYRCP-2020-009.115
Fulltext: PDF;
In : ICFA mini-Workshop on Mitigation of Coherent Beam Instabilities in Particle Accelerators (MCBI 2019), Zermatt, Switzerland, 23 - 27 Sep 2019, pp.115-120 (CERN-2020-009)
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