Axial field spectrometer at the CERN ISR

Conference · Thu Jan 01 04:00:00 EST 1981

OSTI ID:6339942

Gordon, H; Hogue, R; Killian, T

The Axial Field Spectrometer (AFS) was recently brought into operation at the CERN ISR. It is being exploited in a wide-ranging program to study different aspects of those proton-proton or proton-antiproton collisions which are characterized by a large transverse momentum (p/sub T/). Examples include the measurement of inclusive distributions of identified high p/sub T/ hadrons, and the study of event structures characterized by a large transverse energy (E/sub T/) or the production of one or several high-p/sub T/ electrons or photons. The experimental approach to this program emphasizes integration of advanced magnetic spectroscopy with state-of-the-art calorimetry. These techniques are fully exploited to provide maximal information on all particles produced. In addition, information from these detectors is used in new ways for on-line event triggering and filtering; this allows even very rare events to be selected with high efficiency, an essential prerequisite for studies at a high-luminosity hadron collider, such as the ISR. Considerable modularity of the detectors was sought. Apart from clear advantages of construction, debugging, running, and servicing of such components, modularity provides ease for addition or reconfiguration of the system to emphasize the study of specific final states. At present, for example, a 1 sr Cerenkov detector system allows hadron identification up to p approx. = 12 GeV/c; liquid-argon electromagnetic calorimeters and a uranium-scintillator calorimeter (Hexagon) are used for a study of events containing direct photons.

• Research Organization: Brookhaven National Lab., Upton, NY (USA)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 6339942
• Report Number(s): BNL-29647; CONF-810351-4; ON: DE81024382
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430303* -- Particle Accelerators-- Experimental Facilities & Equipment
440104 -- Radiation Instrumentation-- High Energy Physics Instrumentation
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BARYON-BARYON INTERACTIONS
CERN ISR
DATA ACQUISITION SYSTEMS
DESIGN
HADRON-HADRON INTERACTIONS
INTERACTIONS
LINEAR MOMENTUM
MAGNETIC SPECTROMETERS
MEASURING INSTRUMENTS
NUCLEON-ANTINUCLEON INTERACTIONS
NUCLEON-NUCLEON INTERACTIONS
PARTICLE INTERACTIONS
PERFORMANCE
PROTON-ANTIPROTON INTERACTIONS
PROTON-NUCLEON INTERACTIONS
PROTON-PROTON INTERACTIONS
SPECTROMETERS
STORAGE RINGS
TRANSVERSE MOMENTUM