Development of Detector Systems for Internal and Fixed Target Heavy Ion Physics Experiments

Research output: ThesisDoctoral Thesis (compilation)

Abstract

This thesis deals with intermediate energy heavy ion reactions with the particular aim to study the nuclear matter equation of state which defines the relation between statistical parameters of a fermionic system.

The development of equipment for two experiments, CA47 at The Svedberg Laboratory in Uppsala, Sweden and R16 at Kernfysisch Versneller Instituut (KVI), Groningen, The Netherlands, are described.

CA47 contains the CHICSi detector, a modular, ultra-high vacuum (UHV) compatible, multi-detector system, covering a solid angle of 3pi sr around the collision point. Together with two auxiliary detector systems CHICSi is placed at the cluster-jet target chamber of the CELSIUS storage ring. This thesis gives a technical overview of the detector and the development carried out in order to achieve the desired detection performance. Some laboratory and in-beam tests are described and the analysis of the first experimental results is discussed.

The nuclear intensity interferometry experiment (R16) was performed in a dedicated beam-line of the AGOR superconducting cyclotron. Small-angle two-particle correlations were measured for the E/A = 61 MeV 36Ar + 27Al, 112Sn, 124Sn reactions, together with singles spectra. The experimental energy distributions of neutrons and light charged particles for the 36Ar + 27Al reaction have been analyzed with a Maxwellian multi-source prescription. These results, together with correlation function data, are used to extract information on the size of the emitting sources and their time evolution.
Original languageEnglish
QualificationDoctor
Awarding Institution
  • Nuclear physics
Supervisors/Advisors
  • [unknown], [unknown], Supervisor, External person
Award date2003 May 23
Publisher
Print ISBNs91-628-5670-7
Publication statusPublished - 2003

Bibliographical note

Defence details

Date: 2003-05-23
Time: 10:15
Place: Lecture Hall B, Department of Physics

External reviewer(s)

Name: Trautmann, Wolfgang
Title: Prof
Affiliation: GSI, Germany

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Article: 1) CHICSi - a compact ultra-high vacuum compatible detector system for nuclear reaction experiments at storage rings. I. General structure, mechanics and UHV compatibility.L. Westerberg et al.,Nucl. Instr. and Methods A 500 (2003) 84

Article: 2) CHICSi - a compact ultra-high vacuum compatible detector system for nuclear reaction experiments at storage rings. II. Detectors.P. Golubev et al.,Nucl. Instr. and Methods A 500 (2003) 96

Article: 3) CHICSi - a compact ultra-high vacuum compatible detector system for nuclear reaction experiments at storage rings. III. Readout systemL. Carlen et al.,Nuclear Physics Report LUNP 0103Submitted to: Nucl. Instr. & Meth. A

Article: 4) Energy calibration of CsI scintillator in pulse-shape identification technique.V. Avdeichikov et al.,Nucl. Instr. and Methods A 501 (2003) 505

Subject classification (UKÄ)

  • Subatomic Physics

Keywords

  • Multi-detector system
  • VLSI electronics
  • ultra-thin detectors
  • heavy ion reactions
  • nuclear intensity interferometry
  • Kärnfysik
  • Nuclear physics
  • ultra-high vacuum compatibility
  • Fysicumarkivet A:2003:Golubev

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