Abstract
The HERMES experiment is collecting data on inclusive and semi-inclusive deep inelastic scattering of polarised positrons from polarised targets of H, D, and 3He. These data give information on the spin structure of the nucleon. This paper describes the forward angle spectrometer built for this purpose. The spectrometer includes numerous tracking chambers (micro-strip gas chambers, drift and proportional chambers) in front of and behind a 1.3 T.m magnetic field, as well as an extensive set of detectors for particle identification (a lead-glass calorimeter, a pre-shower detector, a transition radiation detector, and a threshold Cherenkov detector). Two of the main features of the spectrometer are its good acceptance and identification of both positrons and hadrons, in particular pions. These characteristics, together with the purity of the targets, are allowing HERMES to make unique contributions to the understanding of how the spins of the quarks contribute to the spin of the nucleon.
| Original language | English |
|---|---|
| Pages (from-to) | 230-265 |
| Number of pages | 36 |
| Journal | Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment |
| Volume | 417 |
| Issue number | 2-3 |
| DOIs | |
| State | Published - Nov 11 1998 |
Bibliographical note
Funding Information:This project has been supported by the FWO-Flanders, Belgium; the Natural Sciences and Engineering Council of Canada; the Dutch Foundation for Fundamenteel Onderzoek der Materie (FOM); the German Bundesministerium für Bildung, Wissenschaft, Forschung und Technologie; the German Academic Exchange Service (DAAD); the Italian Istituto Nazionale di Fisica Nucleare (INFN); Monbusho International Scientific Research Program, JSPS, and Toray Science Foundation of Japan; the United Kingdom Particle Physics and Astronomy Research Council; the U.S. Department of Energy and National Science Foundation; and INTAS, HCM, and TMR contributions from the European Community.
Funding
This project has been supported by the FWO-Flanders, Belgium; the Natural Sciences and Engineering Council of Canada; the Dutch Foundation for Fundamenteel Onderzoek der Materie (FOM); the German Bundesministerium f\u00FCr Bildung, Wissenschaft, Forschung und Technologie; the German Academic Exchange Service (DAAD); the Italian Istituto Nazionale di Fisica Nucleare (INFN); Monbusho International Scientific Research Program, JSPS, and Toray Science Foundation of Japan; the United Kingdom Particle Physics and Astronomy Research Council; the U.S. Department of Energy and National Science Foundation; and INTAS, HCM, and TMR contributions from the European Community.
| Funders | Funder number |
|---|---|
| Stichting voor Fundamenteel Onderzoek der Materie | |
| U.S. Department of Energy Chinese Academy of Sciences Guangzhou Municipal Science and Technology Project Oak Ridge National Laboratory Extreme Science and Engineering Discovery Environment National Science Foundation National Energy Research Scientific Computing Center National Natural Science Foundation of China | |
| Japan Society for the Promotion of Science Fund for the Promotion of Joint International Research | |
| Particle Physics and Astronomy Research Council | |
| Deutscher Akademischer Austauschdienst France | |
| Instituto Nazionale di Fisica Nucleare | |
| Toray Science Foundation of Japan | |
| U.S. Department of Energy Oak Ridge National Laboratory U.S. Department of Energy National Science Foundation National Energy Research Scientific Computing Center | |
| INTAS, Belgium | |
| Natural Sciences and Engineering Research Council of Canada | |
| Bundesministerium für Bildung, Wissenschaft, Forschung und Technologie | |
| FWO-Flanders | |
| Dutch Foundation for Fundamenteel Onderzoek der Materie | |
| Hausdorff Center for Mathematics | |
| Istituto Nazionale di Fisica Nucleare (INFN) |
Keywords
- (e,e'h)
- Deep inelastic lepton scattering
- Magnetic Spectrometer
- Semi-inclusive scattering
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Instrumentation