Development of fragmented low-Z ion beams for the NA61 fixed-target experiment at the CERN SPS

The NA61 ex­per­i­ment, aims to study the prop­er­ties of the onset of de­con­fine­ment at low SPS en­er­gies and to find sig­na­tures of the crit­i­cal point of strong­ly in­ter­act­ing mat­ter. A broad range in T-μB ph
The NA61 ex­per­i­ment, aims to study the prop­er­ties of the onset of de­con­fine­ment at low SPS en­er­gies and to find sig­na­tures of the crit­i­cal point of strong­ly in­ter­act­ing mat­ter. A broad range in T-μB phase di­a­gram will be cov­ered by per­form­ing an en­er­gy (13A-158A GeV/c) and sys­tem size (p+p, Be+Be, Ar+Ca, Xe+La) scan. In a first phase, frag­ment­ed ion beams of 7Be or 11C pro­duced as sec­on­daries with the same mo­men­tum per nu­cle­on when the in­ci­dent pri­ma­ry Pb-ion beam hits a thin Be tar­get will be used. The H2 beam line that trans­ports the beam to the ex­per­i­ment acts as a dou­ble spec­trom­e­ter which com­bined with a new thin tar­get (de­grad­er) where frag­ments loose en­er­gy pro­por­tion­al to the square of their charge al­lows the sep­a­ra­tion of the want­ed A/Z frag­ments. Thin scin­til­la­tors and TOF mea­sure­ment for the low en­er­gy points are used as par­ti­cle iden­ti­fi­ca­tion de­vices. In this paper re­sults from the first test of the frag­ment­ed ion beam done in 2010 will be pre­sent­ed show­ing that a pure Be beam can be ob­tained sat­is­fy­ing the needs of the ex­per­i­ment.
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Author:Ilias Efthymiopoulos, Olav Ejner Berrig, Thomas Bohl, Horst Breuker, Marco Calviani, Django Manglunki, Simon Mataguez, Stephan Maury, Chrysostomos Valderanis, Karel Cornelis, Jens Spanggaard, Stephane Cettour-Cave, Marek Gazdzicki, Peter Seyboth, Zoltan Fodor, Herbert Ströbele, Fedor Guber, Alexander Ivashkin
URN:urn:nbn:de:hebis:30:3-365098
URL:http://accelconf.web.cern.ch/AccelConf/IPAC2011/papers/thps051.pdf
Parent Title (English):Proceedings of IPAC11 Conference, San Sebastián, Spain
Document Type:Conference Proceeding
Language:English
Year of Completion:2011
Year of first Publication:2011
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2015/01/28
Issue:THPS051
Pagenumber:3
First Page:3541
Last Page:3543
Note:
Copyright (c) 2011 by IPAC’11/EPS-AG — cc Creative Commons Attribution 3.0 (CC BY 3.0)
HeBIS PPN:415703549
Institutes:Physik
Dewey Decimal Classification:530 Physik
Sammlungen:Universitätspublikationen
Licence (German):License LogoCreative Commons - Namensnennung 3.0

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