The straw tube technology for the LHCb outer tracking system

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For the outer tracking system of the LHCb spectrometer 53.760 straws of 2.5 m length will be used. They are arranged in detector modules of 5 m length and 0.34 m width. The envisaged spatial resolution over the entire active area is 200$mu$m resulting in stringent requirements on the accuracy for th...

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Detalles Bibliográficos
Autores principales: Bachmann, S, Bagaturia, I, Deppe, H, Eisele, F, Haas, T, Hajduk, L, Langenegger, U, Michalowski, J, Nawrot, A, Polok, G, Pellegrino, A, Schuijlenburg, H, Schwierz, R, Sluijk, T, Spelt, J, Spaan, B, Szczekowski, M, Stange, U, Syryczynski, K, Trunk, U, Walter, M, Wiedner, D, Uwer, U, Van Appeldorn, G
Lenguaje:eng
Publicado: 2004
Materias:
Detectors and Experimental Techniques
Acceso en línea:http://cds.cern.ch/record/1485017
Descripción
Sumario:For the outer tracking system of the LHCb spectrometer 53.760 straws of 2.5 m length will be used. They are arranged in detector modules of 5 m length and 0.34 m width. The envisaged spatial resolution over the entire active area is 200$mu$m resulting in stringent requirements on the accuracy for the module construction. In this paper we discuss the optimisation of the straws, design and construction of detector modules. The long term operation properties of straws in two different counting gases, Ar/CO$_2$ (70/30) and Ar/CO$_s$/CF$_4$ (75/10/15), is compared.

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