EOS: A time projection chamber for the study of nucleus-nucleus collisions at the Bevalac

Technical Report · Mon Dec 01 00:00:00 EST 1986

DOI:https://doi.org/10.2172/6796353· OSTI ID:6796353

Pugh, H G; Odyniec, G; Rai, G; Seidl, P

The conceptual design is presented for a detector to identify and measure (..delta..p/p approx. = 1%) most of the 200 or so mid-rapidity charged particles (p, d, t, /sup 3/He, /sup 4/He, ..pi../sup + -/, K/sup + -/) produced in each central nucleus-nucleus collision (Au + Au) at Bevalac energies, as well as K/sub 3//sup 0/ and ..lambda../sup 0/. The beam particles and heavy spectator fragments are excluded from the detection volume by means of a central vacuum pipe. Particle identification is achieved by a combination of dE/dx measurements in the TPC, and of time-of-flight measurements in a scintillator array. The TPC is single-ended and its end cap is entirely covered with cathode pads (about 25,000 pads and about 1000 anode wires). A non-uniform pad distribution is proposed to accommodate the high multiplicity of particles emitted at forward angles. The performance of the detector is assessed with regard to multihit capability, tracking, momentum resolution, particle identification, ..lambda../sup 0/ reconstruction, space charge effects, field non-uniformity, dynamic range, data acquisition rate, and data analysis rate. 72 refs., 48 figs., 11 tabs.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 6796353
• Report Number(s): LBL-22314; ON: DE87007893
• Resource Relation: Other Information: Portions of this document are illegible in microfiche products. Original copy available until stock is exhausted
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BEVALAC
RADIATION DETECTORS
DESIGN
DEUTERONS
HEAVY ION REACTIONS
HELIUM 3
HELIUM 4
KAONS MINUS
KAONS PLUS
PIONS MINUS
PIONS PLUS
PROTONS
SCINTILLATION COUNTERS
TRITONS
WIRE SPARK CHAMBERS
ACCELERATORS
BARYONS
BOSONS
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
CYCLIC ACCELERATORS
ELEMENTARY PARTICLES
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FERMIONS
FILMLESS SPARK CHAMBERS
GAS TRACK DETECTORS
HADRONS
HELIUM ISOTOPES
ISOTOPES
KAONS
LIGHT NUCLEI
MEASURING INSTRUMENTS
MESONS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
PIONS
PSEUDOSCALAR MESONS
SPARK CHAMBERS
STABLE ISOTOPES
STRANGE MESONS
STRANGE PARTICLES
440104* - Radiation Instrumentation- High Energy Physics Instrumentation
651100 - Nuclear Physics- Experimental Techniques- (1980-)
440103 - Radiation Instrumentation- Nuclear Spectroscopic Instrumentation