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1.
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Development of THGEM-based Photon Detectors for COMPASS RICH-1
/ Alexeev, M (INFN, Turin ; Piemonte Orientale U., Alessandria) ; 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.) ; Torre, S Dalla (INFN, Trieste) ; Denisov, O (INFN, Turin) ; Duic, V (INFN, Trieste ; Trieste U.) ; Finger, M (Charles U. ; Dubna, JINR) et al.
An R&D; project is presented, aimed to develop a high performance gaseous detector of single photons, for the upgrade of the Ring Imaging Cherenkov Counter RICH-1 of the COMPASS Experiment at CERN SPS. The detector has to stably operate at high gain and high rate, to provide good time resolution and insensitivity to magnetic field, and to offer the possibility to cover very large areas at affordable cost. [...]
2012 - 7 p.
- Published in : Phys. Procedia 37 (2012) 781-788
Elsevier Open Access article: PDF; Fulltext: PDF;
In : 2nd International Conference on Technology and Instrumentation in Particle Physics, Chicago, IL, USA, 9 - 14 Jun 2011, pp.781-788
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2.
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Long term experience and performance of COMPASS RICH-1
/ Tessarotto, F (INFN, Trieste) ; Abbon, P (IRFU, Saclay) ; Alexeev, M (INFN, Trieste) ; Birsa, R (INFN, Trieste) ; Bordalo, P (LIP, Lisbon ; Lisbon, CFTP) ; Bradamante, F (INFN, Trieste ; Trieste U.) ; Bressan, A (INFN, Trieste ; Trieste U.) ; Büchele, M (Freiburg U.) ; Chiosso, M (INFN, Turin ; Turin U.) ; Ciliberti, P (INFN, Trieste ; Trieste U.) et al.
COMPASS RICH-1 is a large size gaseous Imaging Cherenkov Detector providing hadron identification in the range from 3 to 55 GeV/c, in the wide acceptance spectrometer of the COMPASS Experiment at CERN SPS. It uses a 3 m long C(4)F(10) radiator, a 21 m(2) large VUV mirror surface and two kinds of photon detectors: MAPMTs and MWPCs with CsI photocathodes, covering a total of 5.5 m(2). [...]
2014 - 27 p.
- Published in : JINST 9 (2014) C09011
In : International Conference on Instrumentation for Colliding Beam Physics 2014, Novosibirsk, Russia, 24 Feb - 1 Mar 2014, pp.C09011
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3.
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Monitoring of absolute mirror alignment at COMPASS RICH-1 detector
/ Alexeev, M (INFN, Turin ; Piemonte Orientale U., Alessandria ; Bari U. ; INFN, Trieste) ; 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) ; Denisov, O (INFN, Turin) ; Duic, V (INFN, Trieste ; Trieste U.) ; Ferrero, A (INFN, Turin ; Turin U.) et al.
The gaseous COMPASS RICH-1 detector uses two spherical mirror surfaces, segmented into 116 individual mirrors, to focus the Cherenkov photons onto the detector plane. Any mirror misalignment directly affects the detector resolution. [...]
2014 - 4 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 766 (2014) 208-211
Elsevier Open Access article: PDF;
In : 8th International Workshop on Ring Imaging Cherenkov Detectors, Hayama, Kanagawa, Japan, 2 - 6 Dec 2013, pp.208-211
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4.
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Fast photon-detection for COMPASS RICH-1
/ Chiosso, Michela (INFN, Turin ; U. Turin (main)) ; Abbon, P (DSM, DAPNIA, Saclay) ; Alexeev, M (Piemonte Orientale U., Alessandria ; INFN, Turin) ; Angerer, H (Munich, Tech. U.) ; Birsa, R (INFN, Trieste) ; Bordalo, P (LIP, Lisbon) ; Bradamante, F (INFN, Trieste ; U. Trieste (main)) ; Bressan, A (U. Trieste (main) ; INFN, Trieste) ; Ciliberti, P (INFN, Trieste ; U. Trieste (main)) ; Colantoni, M L (INFN, Turin) et al.
A fast photon-detection system for the detector RICH-1 of the COMPASS Experiment at CERN SPS is in operation since the 2006 run. It is based on the use of Multi-Anode Photomultipliers (MAPMTs) coupled to individual fused silica lens telescopes and fast read-out electronics. [...]
2008
- Published in : 10.1142/9789812819093_0007
In : 10th ICATPP Conference on Astroparticle, Particle, Space Physics, Detectors and Medical Physics Applications, Villa Olmo, Como, Italy, 8 - 12 Oct 2007, pp.45-49
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5.
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6.
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Measurement of azimuthal hadron asymmetries in semi-inclusive deep inelastic scattering off unpolarised nucleons
/ COMPASS Collaboration
Spin-averaged asymmetries in the azimuthal distributions of positive and negative hadrons produced in deep inelastic scattering were measured using the CERN SPS muon beam at $160$ GeV/c and a $^6$LiD target. The amplitudes of the three azimuthal modulations $\cos\phi_h$, $\cos2\phi_h$ and $\sin\phi_h$ were obtained binning the data separately in each of the relevant kinematic variables $x$, $z$ or $p_T^{\,h}$ and binning in a three-dimensional grid of these three variables. [...]
arXiv:1401.6284; CERN-PH-EP-2014-009; CERN-PH-EP-2014-009.-
Geneva : CERN, 2014-09 - 32 p.
- Published in : Nucl. Phys. B 886 (2014) 1046-1077
Article from SCOAP3: PDF; Draft (restricted): PDF; Elsevier Open Access article: PDF; Fulltext: S0550321314002387 - XML; CERN-PH-EP-2014-009 - PDF; arXiv:1401.6284 - PDF;
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7.
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Transverse target spin asymmetries in exclusive $\rho^0$ muoproduction
/ COMPASS Collaboration
Exclusive production of $\rho^0$ mesons was studied at the COMPASS experiment by scattering 160 GeV/$c$ muons off transversely polarised protons. Five single-spin and three double-spin azimuthal asymmetries were measured as a function of $Q^2$, $x_{Bj}$, or $p_{T}^{2}$. [...]
arXiv:1310.1454; CERN-PH-EP-2013-191; CERN-PH-EP-2013-191.-
Geneva : CERN, 2014-04-04 - 8 p.
- Published in : Phys. Lett. B 731 (2014) 19-26
Article from SCOAP3: PDF; Draft (restricted): PDF; Elsevier Open Access article: PDF; Fulltext: S0370269314000963 - XML; arXiv:1310.1454 - PDF; CERN-PH-EP-2013-191 - PDF;
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8.
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Hadron Transverse Momentum Distributions in Muon Deep Inelastic Scattering at 160 GeV/$c$
/ COMPASS Collaboration
Multiplicities of charged hadrons produced in deep inelastic muon scattering off a $^6$LiD target have been measured as a function of the DIS variables $x_{Bj}$, $Q^2$, $W^2$ and the final state hadron variables $p_T$ and $z$. The $p_T^2$ distributions are fitted with a single exponential function at low values of $p_T^2$ to determine the dependence of $\langle p_T^2 \rangle$ on $x_{Bj}$, $Q^2$, $W^2$ and $z$. [...]
arXiv:1305.7317; CERN-PH-EP-2013-091; CERN-PH-EP-2013-091.-
Geneva : CERN, 2013-08-23 - 18 p.
- Published in : Eur. Phys. J. C
Article from SCOAP3: PDF; Fulltext: PDF; Springer Open Access Erratum: PDF; External link: Preprint
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9.
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10.
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Fast Photon Detection for COMPASS RICH1
/ Abbon, P (DSM, DAPNIA, Saclay) ; Alekseev, M (INFN, Turin ; Turin U.) ; Angerer, H (Munich, Tech. U.) ; Apollonio, M (INFN, Trieste ; Trieste U.) ; Birsa, R (INFN, Trieste ; Trieste U.) ; Bordalo, P (Lisbon, LIFEP) ; Bradamante, F (INFN, Trieste ; Trieste U.) ; Bressan, A (INFN, Trieste ; Trieste U.) ; Busso, L (INFN, Turin ; Turin U.) ; Chiosso, M (INFN, Turin ; Turin U.) et al.
The new photon detection system for COMPASS RICH-1 has been designed to cope with the demanding requests of operation at high beam intensity and at high trigger rates. The detection technique in the central region of RICH-1 has been changed with a system based on multianode photomultipliers coupled to individual fused silica lens telescopes and to a fast, almost dead time free readout system based on the MAD-4 amplifier-discriminator and the F1 TDC-chip. [...]
2006 - 8 p.
- Published in : Czechoslov. J. Phys. 56 (2006) F317
Fulltext: PDF;
In : Advanced Studies Institution Symmetries and Spin, Prague, Czech Republic, 19 - 26 Jul 2006, pp.317
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