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Status of COMPASS RICH-1 Upgrade with MPGD-based Photon Detectors
/ Tessarotto, F. (INFN, Trieste) ; Alexeev, M. (INFN, Turin) ; Birsa, R. (INFN, Trieste) ; Bradamante, F. (INFN, Trieste ; U. Trieste (main)) ; Bressan, A. (INFN, Trieste ; U. Trieste (main)) ; Chiosso, M. (INFN, Turin ; U. Turin (main)) ; Ciliberti, P. (INFN, Trieste ; U. Trieste (main)) ; Dalla Torre, S. (INFN, Trieste) ; Dasgupta, S. (INFN, Trieste ; U. Trieste (main)) ; Denisov, O. (INFN, Turin) et al.
A Set of new MPGD-based Photon Detectors is being built for the upgrade of COMPASS RICH-1. The detectors cover a total active area of 1.4 m$^2$ and are based on a hybrid architecture consisting of two THGEM layers and a Micromegas. [...]
arXiv:1710.09274.-
2018 - 5 p.
- Published in : EPJ Web Conf. 174 (2018) 01004
Fulltext: epjconf_mpgd2018_01004 - PDF; arXiv:1710.09274 - PDF; External links: 00003 Rate of discharges in THGEMs as function of the bias voltage in Ar/CO$_2$ 70/30 gas mixture.; 00000 Artistic view of the COMPASS RICH-1 detector (left) and exploded view of the new PDs (right); 00002 Schematic section of the hybrid module (not in scale).; 00004 A THGEM in its handling frame (left) and inside the CsI deposition plant (right).; 00005 A THGEM in its handling frame (left) and inside the CsI deposition plant (right).; 00001 Artistic view of the COMPASS RICH-1 detector (left) and exploded view of the new PDs (right)
In : 4th International Conference on Micro Pattern Gaseous Detectors - MPGD2015, Trieste, Italy, 12 - 15 Oct 2015, pp.01004
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Latest results of the CAST axion search
/ Irastorza, I G (DAPNIA, Saclay ; Zaragoza U.) ; Arik, E (Dogus U., Kadikoy) ; Aune, S (DAPNIA, Saclay) ; Autiero, D (CERN) ; Barth, K (CERN) ; Belov, A (Moscow, INR) ; Beltran, B (Zaragoza U.) ; Borghi, S (CERN) ; Bourlis, G (Hellenic Open U., Patras) ; Boydag, F S (Dogus U., Kadikoy) et al.
/CAST
2007 - 9 p.
- Published in : , pp. 301-310
Fulltext: PDF;
In : 42nd Rencontres de Moriond, La Thuile, Italy, 10 - 17 Mar 2007, pp.301-310
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Hybrid MPGD-based detectors of single photons for the upgrade of COMPASS RICH-1
/ Alexeev, M (INFN, Turin ; Dubna, JINR) ; Birsa, R (INFN, Trieste) ; Bradamante, F (INFN, Trieste ; Trieste U.) ; Bressan, A (INFN, Trieste ; Trieste U.) ; Chiosso, M (INFN, Turin ; Turin U.) ; Ciliberti, P (INFN, Trieste ; Trieste U.) ; Dalla Torre, S (INFN, Trieste) ; Dasgupta, S (INFN, Trieste ; Trieste U.) ; Denisov, O (INFN, Turin) ; Finger, M (Charles U. ; Dubna, JINR) et al.
A seven year-long R&D; programme has been performed and the resulting detector architecture is a hybrid MPGD including two THick GEM (THGEM) multiplication stages followed a MICROMEGAS. The first THGEM board forms the photocathode support: its upper face is CsI coated. [...]
2016 - 5 p.
- Published in : 10.1109/NSSMIC.2015.7581949
In : 2015 IEEE Nuclear Science Symposium and Medical Imaging Conference, San Diego, CA, USA, 31 Oct - 7 Nov 2015, pp.7581949
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Transverse-momentum-dependent Multiplicities of Charged Hadrons in Muon-Deuteron Deep Inelastic Scattering
/ COMPASS Collaboration
A semi-inclusive measurement of charged hadron multiplicities in deep inelastic muon scattering off an isoscalar target was performed using data collected by the COMPASS Collaboration at CERN. The following kinematic domain is covered by the data: photon virtuality $Q^{2}>1$ (GeV/$c$)$^2$, invariant mass of the hadronic system $W > 5$ GeV/$c^2$, Bjorken scaling variable in the range $0.003 < x < 0.4$, fraction of the virtual photon energy carried by the hadron in the range $0.2 < z < 0.8$, square of the hadron transverse momentum with respect to the virtual photon direction in the range 0.02 (GeV/$c)^2 < P_{\rm{hT}}^{2} < 3$ (GeV/$c$)$^2$. [...]
arXiv:1709.07374; CERN-EP-2017-253.-
Geneva : CERN, 2018-02-08 - 23 p.
- Published in : Phys. Rev. D 97 (2018) 032006
Article from SCOAP3: PDF; Draft (restricted): PDF; Fulltext: arXiv:1709.07374 - PDF; CERN-EP-2017-253 - PDF;
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Solar axion search with the CAST experiment
/ Borghi, S (CERN ; Glasgow U.) ; Arik, E (Dogus U., Kadikoy ; Bogazici U.) ; Aune, S (IRFU, Saclay) ; Autiero, D (CERN ; Lyon, IPN) ; Barth, K (CERN) ; Belov, A (Moscow, INR) ; Beltrán, B (Zaragoza U.) ; Bourlis, G (Hellenic Open U., Patras) ; Boydag, F S (Dogus U., Kadikoy ; Bogazici U.) ; Bräuninger, H (Garching, Max Planck Inst., MPE) et al.
/CAST
The CAST (CERN Axion Solar Telescope) experiment is searching for solar axions by their conversion into photons inside the magnet pipe of a LHC prototype dipole. In the phase II, CAST is operating with a buffer gas inside the magnet bore apertures in order to extent the sensitivity of the experiment to larger axion masses. [...]
Paris, France : Moriond, 2008 - 8 p.
- Published in : , pp. 465-472
Fulltext: PDF;
In : 43rd Rencontres de Moriond, La Thuile, Italy, 01 - 08 Mar 2008, pp.465-472
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New analysis of $\eta\pi$ tensor resonances measured at the COMPASS experiment
/ JPAC Collaboration
We present a new amplitude analysis of the $\eta\pi$ $D$-wave in $\pi^- p\to \eta\pi^- p$ measured by COMPASS. Employing an analytical model based on the principles of the relativistic $S$-matrix, we find two resonances that can be identified with the $a_2(1320)$ and the excited $a_2^\prime(1700)$, and perform a comprehensive analysis of their pole positions. [...]
arXiv:1707.02848; CERN-EP-2017-169; JLAB-THY-17-2468.-
Geneva : CERN, 2018-04-10 - 9 p.
- Published in : Phys. Lett. B 779 (2018) 464-472
Article from SCOAP3: PDF; Draft (restricted): PDF; Fulltext: arXiv:1707.02848 - PDF; CERN-EP-2017-169 - PDF;
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First measurement of the Sivers asymmetry for gluons from SIDIS data
/ COMPASS Collaboration
The Sivers function describes the correlation between the transverse spin of a nucleon and the transverse motion of its partons. It was extracted from measurements of the azimuthal asymmetry of hadrons produced in semi-inclusive deep inelastic scattering of leptons off transversely polarised nucleon targets, and it turned out to be non-zero for quarks. [...]
arXiv:1701.02453; CERN-EP-2017-003.-
Geneva : CERN, 2017-09-10 - 11 p.
- Published in : Phys. Lett. B 772 (2017) 854-864
Article from SCOAP3: PDF; Draft (restricted): PDF; Fulltext: CERN-EP-2017-003 - PDF; arXiv:1701.02453 - PDF;
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