ATLAS

Research group

Research theme

Sub department

About

Related research groups

Measurement of the azimuthal ordering of charged hadrons with the ATLAS detector

ArXiv 1203.0419 (2012)
Details from ArXiV

Search for FCNC single top-quark production at sqrt(s) = 7 TeV with the ATLAS detector

ArXiv 1203.0529 (2012)
Details from ArXiV

Study of high-pT charged particle suppression in PbPb compared to pp collisions at √SNN=2.76 TeV

European Physical Journal C 72:3 (2012) 1-22

Authors:

S Chatrchyan, V Khachatryan, AM Sirunyan, A Tumasyan, W Adam, T Bergauer, M Dragicevic, J Erö, C Fabjan, M Friedl, R Frühwirth, VM Ghete, J Hammer, M Hoch, N Hörmann, J Hrubec, M Jeitler, W Kiesenhofer, M Krammer, D Liko, I Mikulec, M Pernicka, B Rahbaran, C Rohringer, H Rohringer, R Schöfbeck, J Strauss, A Taurok, F Teischinger, P Wagner, W Waltenberger, G Walzel, E Widl, CE Wulz, V Mossolov, N Shumeiko, J Suarez Gonzalez, S Bansal, L Benucci, T Cornelis, EA de Wolf, X Janssen, S Luyckx, T Maes, L Mucibello, S Ochesanu, B Roland, R Rougny, M Selvaggi, H van Haevermaet, P van Mechelen, N van Remortel, A van Spilbeeck, F Blekman, S Blyweert, J D'Hondt, R Gonzalez Suarez, A Kalogeropoulos, M Maes, A Olbrechts, W van Doninck, P van Mulders, GP van Onsem, I Villella, O Charaf, B Clerbaux, G de Lentdecker, V Dero, APR Gay, GH Hammad, T Hreus, A Léonard, PE Marage, L Thomas, C Vander Velde, P Vanlaer, J Wickens, V Adler, K Beernaert, A Cimmino, S Costantini, G Garcia, M Grunewald, B Klein, J Lellouch, A Marinov, J Mccartin, AA Ocampo Rios, D Ryckbosch, N Strobbe, F Thyssen, M Tytgat, L Vanelderen, P Verwilligen, S Walsh, E Yazgan, N Zaganidis, S Basegmez, G Bruno, L Ceard

Abstract:

The transverse momentum spectra of charged particles have been measured in pp and PbPb collisions at √SNN=2.76 TeV by the CMS experiment at the LHC. In the transverse momentum range pT=5-10 GeV/c, the charged particle yield in the most central PbPb collisions is suppressed by up to a factor of 7 compared to the pp yield scaled by the number of incoherent nucleon-nucleon collisions. At higher pT, this suppression is significantly reduced, approaching roughly a factor of 2 for particles with pT in the range pT=40-100 GeV/c. © 2012 CERN for the benefit of the CMS collaboration.
More details from the publisher

Summary: Structure functions

Office of Scientific and Technical Information (OSTI) (2012)

Authors:

Amanda Cooper-Sarkar, Pedro Jimenez-Delgado, R Placakyte
More details from the publisher

The ATLAS SCT grounding and shielding concept and implementation

Journal of Instrumentation 7:3 (2012)

Authors:

RL Bates, PJ Bell, J Bernabeu, J Bizzell, J Bohm, R Brenner, PA Bruckman De Renstrom, A Catinaccio, JV Cindro, A Ciocio, V Civera, S Chouridou, P Dervan, B Dick, Z Dolezal, L Eklund, L Feld, D Ferrere, S Gadomski, F Gonzalez, E Gornicki, A Greenhall, AA Grillo, J Grosse-Knetter, M Gruwe, S Haywood, NP Hessey, Y Ikegami, TJ Jones, J Kaplon, P Kodys, T Kohriki, T Kondo, S Koperny, C Lacasta, J Lozano Bahilo, P Malecki, F Martinez-Mckinney, SJ McMahon, A McPherson, B Mikulec, M Miku, GF Moorhead, MC Morrissey, K Nagai, A Nichols, V O'Shea, JR Pater, SJM Peeters, H Pernegger, E Perrin, PW Phillips, JP Pieron, S Roe, J Sanchez, E Spencer, J Stastny, J Tarrant, S Terada, M Tyndel, Y Unno, R Wallny, M Weber, AR Weidberg, PS Wells, P Werneke, I Wilmut

Abstract:

This paper describes the design and implementation of the grounding and shielding system for the ATLAS SemiConductor Tracker (SCT). The mitigation of electromagnetic interference and noise pickup through power lines is the critical design goal as they have the potential to jeopardize the electrical performance. We accomplish this by adhering to the ATLAS grounding rules, by avoiding ground loops and isolating the different subdetectors. Noise sources are identified and design rules to protect the SCT against them are described. A rigorous implementation of the design was crucial to achieve the required performance. This paper highlights the location, connection and assembly of the different components that affect the grounding and shielding system: cables, filters, cooling pipes, shielding enclosure, power supplies and others. Special care is taken with the electrical properties of materials and joints. The monitoring of the grounding system during the installation period is also discussed. Finally, after connecting more than four thousand SCT modules to all of their services, electrical, mechanical and thermal within the wider ATLAS experimental environment, dedicated tests show that noise pickup is minimised. © 2012 IOP Publishing Ltd and Sissa Medialab srl.
More details from the publisher
More details