Peter F. Schultz

Design and development of a 1.5 meter streamer chamber system

Abstract A 1.5 m × 1.0 m × 0.6 m NeHe streamer chamber and high voltage pulsing system capable of 1.0 MV pulses with widths continuously variable from 10 to 20 ns has been developed by a University of Illinois - ANL group. The design and construction of the dc fast charge regulator, Marx generator, Blumlein pulse shaping network, transmission line, and chamber are described. Studies on the effects of increasing field emission and injection of free electrons into the pulse shaping network gap on pulse amplitude stability are reported. Under normal operating conditions, pulse amplitude stability of 2–3% rms has been achieved. Photographic and pulse monitoring systems are described and operating experience over two experimental runs is summarized.

Study of inclusive reactions K/sup -/p. -->. K-bar/sup 0/ + X and K/sup -/p. -->. lambda. /sup 0/ + X at 6. 5 GeV/c

Inclusive V/sup 0/ production in 6.5-GeV/c K/sup -/p interactions is studied using the ANL 12-ft-diameter hydrogen bubble chamber. The total cross sections for inclusive K-bar/sup 0/ and ..lambda../sup 0/ production are sigma (K-bar/sup 0/) = 7.98 +- 0.49 mb and sigma (..lambda../sup 0/) = 3.94 +- 0.24 mb. Semi-inclusive differential cross sections are determined as functions of Feynman x and transverse momentum squared of the V/sup 0/s, and of four-momentum transfer to the V/sup 0/. The average charge multiplicity, the ratio /D, and the correlation function f/sub 2//sup cc/ for the neutrally charged hadronic system recoiling from the V/sup 0/ are determined as functions of the mass of the recoiling system. Results are used to examine universal aspects of multiparticle production.

Study of inclusive reactions K-p→K̄0+X and K-p→Λ0+X at 6.5 GeV/c

Inclusive V/sup 0/ production in 6.5-GeV/c K/sup -/p interactions is studied using the ANL 12-ft-diameter hydrogen bubble chamber. The total cross sections for inclusive K-bar/sup 0/ and ..lambda../sup 0/ production are sigma (K-bar/sup 0/) = 7.98 +- 0.49 mb and sigma (..lambda../sup 0/) = 3.94 +- 0.24 mb. Semi-inclusive differential cross sections are determined as functions of Feynman x and transverse momentum squared of the V/sup 0/s, and of four-momentum transfer to the V/sup 0/. The average charge multiplicity, the ratio /D, and the correlation function f/sub 2//sup cc/ for the neutrally charged hadronic system recoiling from the V/sup 0/ are determined as functions of the mass of the recoiling system. Results are used to examine universal aspects of multiparticle production.