The CLEO III drift chamber

被引：207

作者：

Peterson, D ^{[1
]}

Berkelman, K

Briere, R

Chen, G

Cronin-Hennessy, D

Csorna, S

Dickson, M

von Dombrowski, S

Ecklund, KM

Lyon, A

Marka, S

Meyer, TO

Patterson, JR

Sadoff, A

Thies, P

Thorndike, EH

Urner, D

机构：

[1] Cornell Univ, Wilson Lab Nucl Studies, Ithaca, NY 14853 USA

[2] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA

[3] Univ Rochester, Rochester, NY 14627 USA

[4] Vanderbilt Univ, Nashville, TN 37235 USA

[5] Ithaca Coll, Ithaca, NY 14850 USA

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2002年 / 478卷 / 1-2期

关键词：

D O I：

10.1016/S0168-9002(01)01737-5

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The CLEO group at the Cornell Electron Storage Ring has constructed and commissioned a new central drift chamber. With 9796 cells arranged in 47 layers ranging in radius from 13.2 to 79 cm, the new drift chamber has a smaller outer radius and fewer wires than the drift chamber it replaces, but allows the CLEO tracking system to have improved momentum resolution. Reduced scattering material in the chamber gas and in the inner skin separating the drift chamber from the silicon vertex detector provides a reduction of the multiple scattering component of the momentum resolution and an extension of the usable measurement length into the silicon. Momentum resolution is further improved through quality control in wire positioning and symmetry of the electric fields in the drift cells which have provided a reduction in the spatial resolution to 88 mum (averaged over the full drift range). (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：142 / 146

页数：5

共 15 条

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