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New optics design of the Cherenkov threshold detectors at CERN
/ Buesa Orgaz, Jan (CERN) ; Schwinzerl, Martin (CERN) ; Bernhard, Johannes (CERN) ; Brugger, Markus (CERN) ; Charitonidis, Nikolaos (CERN) ; Folch, Ramon (CERN) ; Göktürk, Berare (CERN) ; Kadi, Yacine (CERN) ; Nevay, Laurence (CERN) ; Ortega Ruiz, Inaki (CERN) et al.
The performance of the Cherenkov threshold detectors (XCET) used in the secondary beam areas (SBA) at CERN is limited by their built-in optics. This study showcases an improved design using compound parabolic concentrators (CPCs) to reduce size and cost of the optics while optimizing the light collection efficiency. [...]
2023
- Published in : Proc. SPIE 12696 (2023) 126960E
External link: Fulltext
In : Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XXIII, San Diego, United States, 20 - 24 Aug 2023, pp.126960E
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2.
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High-precision half-life determination of $^{14}$O via direct $\beta $ counting
/ Sharma, S. (Regina U.) ; Grinyer, G.F. (Regina U.) ; Ball, G.C. (TRIUMF) ; Leslie, J.R. (Queen's U., Kingston) ; Svensson, C.E. (Guelph U.) ; Ali, F.A. (Guelph U. ; Sulaimaniya U.) ; Andreoiu, C. (Simon Fraser U., Dept. Chem.) ; Bernier, N. (TRIUMF ; British Columbia U. ; Western Cape U. ; Zululand U.) ; Bhattacharjee, S.S. (TRIUMF) ; Bildstein, V. (Guelph U.) et al.
The half-life of the superallowed Fermi $\beta^+$ emitter $^{14}$O was determined to high precision via a direct $\beta$ counting experiment performed at the Isotope Separator and Accelerator (ISAC) facility at TRIUMF. The result, $T_{1/2}$($^{14}$O) = 70619.2(76) ms, is consistent with, but is more precise than, the world average obtained from 11 previous measurements. [...]
arXiv:2204.06668.-
2022-05-03 - 8 p.
- Published in : Eur. Phys. J. A 58 (2022) 83
Fulltext: PDF; Publication: PDF;
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3.
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ebook
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4.
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LHC transfer lines and injection systems
/ Bartmann, W (CERN) ; Barnes, M J (CERN) ; Bracco, C (CERN) ; Carlier, E (CERN) ; Cettour Cave, S (CERN) ; Dehning, B (CERN) ; Folch, R (CERN) ; Le Godec, G (CERN) ; Goddard, B (CERN) ; Grishin, S (CERN) et al.
The status and commissioning plans of the transfer line and injection hardware
are presented with focus on the injection dump and kickers. Modifications of the
beam loss monitoring in the injection region, its readiness for the start-up and
commissioning strategy are shown. [...]
Geneva : CERN, 2014 - 6 p.
- Published in : (2014) , pp. 117-122
Fulltext: PDF;
In : 5th Evian Workshop on LHC beam operation, Evian-les-Bains, France, 2 - 4 Jun 2014, pp.117-122
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5.
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Collimation system post-LS1: status and commissioning
/ Salvachua, B (CERN) ; Valentino, G (CERN) ; Aberle, O (CERN) ; Albertone, J (CERN) ; Athanasiadis, S (CERN) ; Baglin, V (CERN) ; Bertarelli, A (CERN) ; Boccard, C (CERN) ; Bruce, R (CERN) ; Carra, F (CERN) et al.
The LHC collimation system has undergone an important upgrade during LS1. A
total of 32 collimator installations are taking place to consolidate and improve
the Run 1 system. [...]
Geneva : CERN, 2014 - 6 p.
- Published in : (2014) , pp. 111-116
Fulltext: PDF;
In : 5th Evian Workshop on LHC beam operation, Evian-les-Bains, France, 2 - 4 Jun 2014, pp.111-116
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6.
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TDI - past observations and improvements for 2016
/ Lechner, A (CERN) ; Barnes, M J (CERN) ; Bartmann, W (CERN) ; Biancacci, N (CERN) ; Bracco, C (CERN) ; Bregliozzi, G (CERN) ; Butcher, M (CERN) ; Muller, J Esteban (CERN) ; Folch, R (CERN) ; Gentini, L (CERN) et al.
In Run 1, the LHC injection absorbers (TDIs) were affected by several anomalies
including structural damage of the beam screens and elastic deformations of the
jaws due to heating during fills. Other issues became apparent in 2015, like
excessive vacuum spikes, which gave rise to several beam dumps, as well as
quality issues affecting the hBN absorber blocks. [...]
Geneva : CERN, 2016 - 8 p.
- Published in : (2016) , pp. 123-130
Fulltext: PDF;
In : 6th Evian Workshop on LHC beam operation, Evian Les Bains, France, 15 - 17 Dec 2015, pp.123-130
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7.
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$\beta$-decay half-lives and $\beta$-delayed neutron emission probabilities for several isotopes of Au, Hg, Tl, Pb and Bi, beyond $N=126$
/ Caballero-Folch, R. (Barcelona, Polytechnic U. ; TRIUMF) ; Domingo-Pardo, C. (Valencia U., IFIC) ; Agramunt, J. (Valencia U., IFIC) ; Algora, A. (Valencia U., IFIC ; Debrecen, Inst. Nucl. Res.) ; Ameil, F. (Darmstadt, GSI) ; Ayyad, Y. (U. Santiago de Compostela (main)) ; Benlliure, J. (U. Santiago de Compostela (main)) ; Bowry, M. (Surrey U.) ; Calviño, F. (Barcelona, Polytechnic U.) ; Cano-Ott, D. (Madrid, CIEMAT) et al.
$Background:$ Previous measurements of $\beta$-delayed neutron emitters comprise around 230 nuclei, spanning from the $^{8}$He up to $^{150}$La. Apart from $^{210}$Tl, with a minuscule branching ratio of 0.007\%, no other neutron emitter is measured yet beyond $A=150$. [...]
arXiv:1701.03845.-
2017-06-23 - 16 p.
- Published in : Phys. Rev. C 95 (2017) 064322
Fulltext: PDF;
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8.
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High Intensity Beam Test of Low Z Materials for the Upgrade of SPS-to-LHC Transfer Line Collimators and LHC Injection Absorbers
/ Maciariello, Fausto (CERN) ; Aberle, Oliver (CERN) ; Butcher, Mark (CERN) ; Calviani, Marco (CERN) ; Folch, Ramon (CERN) ; Kain, Verena (CERN) ; Karagiannis, Konstantinos (CERN) ; Lamas Garcia, Inigo (CERN) ; Lechner, Anton (CERN) ; Nuiry, Francois-Xavier (CERN) et al.
In the framework of the LHC Injector Upgrade (LIU) and High-Luminosity LHC (HL-LHC) project, the collimators in the SPS-to LHC transfer lines will undergo important modifications. The changes to these collimators will allow them to cope with beam brightness and intensity levels much increased with respect to their original design parameters: nominal and ultimate LHC. [...]
CERN-ACC-2016-281.-
2016 - 4 p.
- Published in : 10.18429/JACoW-IPAC2016-TUPMB052
Published version from JACoW: PDF;
In : 7th International Particle Accelerator Conference, Busan, Korea, 8 - 13 May 2016, pp.TUPMB052
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9.
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Feasibility Study of a New SPS Beam Dump System
/ Velotti, Francesco (CERN) ; Abelleira, Jose Luis (CERN) ; Barnes, Michael (CERN) ; Bracco, Chiara (CERN) ; Carlier, Etienne (CERN) ; Cerutti, Francesco (CERN) ; Cornelis, Karel (CERN) ; Folch, Ramon (CERN) ; Goddard, Brennan (CERN) ; Kain, Verena (CERN) et al.
The CERN Super Proton Synchrotron (SPS) presently uses an internal beam dump system with two separate blocks to cleanly dispose of low and high energy beams. In view of the increased beam power and brightness needed for the LHC Injector Upgrade project for High Luminosity LHC (HL-LHC), the performance of this internal beam dump system has been reviewed for future operation. [...]
CERN-ACC-2015-005.-
2015 - 4 p.
- Published in : (2015) , pp. THPF097
Published version from JACoW: PDF; External link: JACOW
In : 6th International Particle Accelerator Conference, Richmond, VA, USA, 3 - 8 May 2015, pp.THPF097
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10.
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Comparison between Measured and Computed Temperatures of the Internal High Energy Beam Dump in the CERN SPS
/ Steele, Genevieve (CERN) ; Folch, Ramon (CERN) ; Kain, Verena (CERN) ; Leitao, Ivo (CERN) ; Losito, Roberto (CERN) ; Maglioni, Cesare (CERN) ; Pasdeloup, Florian (CERN) ; Perillo-Marcone, Antonio (CERN) ; Velotti, Francesco (CERN)
The SPS high energy internal dump (TIDVG) is designed to receive beam dumps from 10².2 to 450 GeV. The absorbing core is composed of 2.5m graphite, followed by 1m of aluminium, then 0.5m of copper and finally 0.3m of tungsten, all of which is surrounded by a water cooled copper jacket. [...]
CERN-ACC-2015-295.-
2015 - 4 p.
- Published in : (2015) , pp. TUAD2
Published version from JACoW: PDF; External link: JACOW
In : 6th International Particle Accelerator Conference, Richmond, VA, USA, 3 - 8 May 2015, pp.TUAD2
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