Simultaneous fast and slow neutron detection with superheated droplet detector and real-time readout system

Liu, Yi

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https://hdl.handle.net/2142/98096 Copy

Description

Title

Simultaneous fast and slow neutron detection with superheated droplet detector and real-time readout system

Author(s)

Liu, Yi

Issue Date

2017-05-05

Director of Research (if dissertation) or Advisor (if thesis)

Sullivan, Clair Julia

Doctoral Committee Chair(s)

Sullivan, Clair Julia

Committee Member(s)

• d'Errico, Francesco
• Stubbins, James F.
• Meng, Ling-Jian

Department of Study

Nuclear, Plasma, & Rad Engr

Discipline

Nuclear, Plasma, Radiolgc Engr

Degree Granting Institution

University of Illinois at Urbana-Champaign

Degree Name

Ph.D.

Degree Level

Dissertation

Keyword(s)

• Neutron detection
• Superheated droplet detector
• Radiation portal monitors
• Neutron dosimeter
• Neutron spectrometer

Abstract

Alternative slow neutron detection technologies are desired in response to needs by homeland security and radiation safety. Superheated droplet detectors (SDD) have the potential to be used in both situations because they have many distinct characteristics, such as photon insensitivity, passive operation, tissue-equivalent composition, isotropic response, flexible size, and low cost. A neutron detection system based on SDDs is developed in this research for simultaneous detection of fast neutrons and slow neutrons. The detection system is composed of two SDDs and an imaging-readout system. One of the SDDs is doped with 3.4\% $^6$LiCl, and the other one is a regular SDD. In the imaging-readout system of the detection system, machine learning algorithms are developed for accurate bubble counting. The algorithms show a much better accuracy and precision than traditionally used algorithms.

Graduation Semester

2017-08

Type of Resource

text

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http://hdl.handle.net/2142/98096

Copyright and License Information

Copyright 2017 Yi Liu

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