dFermi National Accelerator Laboratory, Batavia, Illinois 60510. eUniversit a di Pisa and Istituto Nazionale di Fisica Nucleare, Sezione di Pisa, I-56010 Pisa, Italy.
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Fermi National Accelerator Laboratory FERMILAB-Conf-98/369-E CDF
The CDF Intermediate Silicon Layers Detector P. Azzi-Bacchetta et al. For the CDF Collaboration
Fermi National Accelerator Laboratory P.O. Box 500, Batavia, Illinois 60510
December 1998
Published Proceedings of the 6th International Conference on Advanced Technology and Particle Physics, Villa Olmo, Italy, October 5-9, 1998
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1
The CDF Intermediate Silicon Layers detector
P. Azzi-Bacchettaa, N. Bacchettaa, A. Bastie , F. Bedeschie, D. Biselloa, S. Bluskb, M. Chertokc, G. Chiarellie, R. Deminad , S. Donatie , R. Fieldf , L. Galtierig , J. Goldsteind, G. Grimd , M. Guerzonih, C. Haberg , K. Harai, F. Hartmannj, A. Heissj, C. Hilld , M. Hrycykd, J. Incandelad, Y. Katok, B. J. Kime, D. Knoblauchj, M. Kruseb, C. M. Leid, S. Leonee, G. Martignona, P. Mcyntirec, Y. Miyazakyk, A. Moggie, T. Mullerj , A. Munar-Arae, T. Okusawak, F. Palmonarie, D. Pellettd, G. Piacentinoe, F. Ra aellie, D. Saltzbergl, E. Sandersl, M. Schillingj , M. Shimojimai , D. Stuartd , T. Takanok, K. Takikawai, P. Tiptonb, N. Turinie , H. Wenzelj , F. Zettie , S. Zucchellih a Universita di Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova, I-35131 Padova, Italy bUniversity of Rochester, Rochester, New York 15627 cTexas A&M University, College Station, Texas 77843 dFermi National Accelerator Laboratory, Batavia, Illinois 60510 eUniversita di Pisa and Istituto Nazionale di Fisica Nucleare, Sezione di Pisa, I-56010 Pisa, Italy f University of Florida, Gainesville, Florida 32611 g Lawrence Berkeley Laboratory, Berkeley, California 94720 hUniversita di Bologna, Istituto Nazionale di Fisica Nucleare, Sezione di Bologna, I-40126 Bologna, Italy iUniversity of Tsukuba, Tsukuba, Ibaraki 305, Japan jInstitut fur Exeperimentelle Kernphysik, Universitat Karlsruhe 76148 Karlsruhe, Germany k Osaka City University, Osaka 588, Japan lUniversity of California at Los Angeles, Los Angeles, California 90024 The Intermediate Silicon Layers (ISL) detector is presently being built as part of CDF upgrades. The ISL is a large radius (28 cm) silicon tracker with a total active area of about 3.5 m2 . The challenge is to build a device which provides precise 3D points introducing a minimal amount of material for the supporting structure. The design and the status of the project are described.
1. INTRODUCTION The Tevatron pp Collider and the CDF detector are presently being upgraded for Run II operation (to begin in early 2000). The Tevatron center-ofmass energy will be increased from 1.8 TeV to 2.0 TeV and the instantaneous luminosity by almost one order of magnitude, to reach 1-21032 cm,2 sec,2. The bunch spacing will be reduced from 3.7 s, rst to 396 ns and then, during the second Corresponding
author
part of the Run, to 132 ns. The CDF goal for Run II is to take 2 fb,1 of data [1]. CDF will have two mechanically separate silicon detectors: the Silicon Vertex (SVX II)[2] and the Intermediate Silicon Layers detector (ISL), both using double-sided sensors. SVX II has ve layers located between the minimum distance of 2.5 cm and the maximum distance of 10.6 cm from the beamline. With a total length of 1 m, it covers the pseudorapidity region j j
