The variable density gas jet internal target for Experiment 835 at Fermilab

被引：24

作者：

Allspach, D

Hahn, A

Kendziora, C

Pordes, S

Boero, G

Garzoglio, G

Macri, M

Marinelli, M

Robutti, E

机构：

[1] Fermi Natl Accelerator Lab, Batavia, IL 60510 USA

[2] Univ Genoa, I-16126 Genoa, Italy

[3] Ist Nazl Fis Nucl, Genoa, Italy

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1998年 / 410卷 / 02期

关键词：

target; cluster; internal; storage; charmonium;

D O I：

10.1016/S0168-9002(98)00236-8

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The hydrogen Jet Target for Experiment 835 (Charmonium spectroscopy) at the Fermilab Antiproton Accumulator can provide a variable density cluster stream up to 3.2 x 10(14) atoms/cm(3) in order to allow an instantaneous luminosity greater than 2 x 10(31) cm(-2) s(-1). This result can be achieved due to the helium refrigerated expansion stage which provides the cluster stream and due to the pumping and the alignment system which significantly lower the background gas. Details on the construction and the performances, measured in the laboratory and during the run, are discussed. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：195 / 205

页数：11

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