Accession Number:

ADA339378

Title:

Fusion Neutron Damage to a Charge Coupled Device Camera

Descriptive Note:

Master's thesis

Corporate Author:

NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s):

Report Date:

1997-09-01

Pagination or Media Count:

52.0

Abstract:

A charge coupled device CCD cameras performance has been degraded by damage produced by 14 MeV neutrons n from the Rotating Target Neutron Source. High energy neutrons produce atomic dislocation in doped silicon electronics. This thesis explores changes in Dark Current J, Charge Transfer Inefficiency CTI, and Contrast Transfer Function CTF as measures of neutron damage. The camera was irradiated to a fluence, Phi, of 6.60 x 10 exp 12 ncm2. The camera temperature was lowered from room temperature to 267 K at a fluence of 4.7 x 10 exp 11 ncm2 to preclude saturation of the camera picture. With temperature compensations, J increased linearly with Phi. Four data points for J, CTF ideal of 1.0, and CTI ideal of 0.0 are given. Neutron irradiation significantly degraded the CCD camera performance however, operating the camera at lower temperatures significantly reduces the effects. Damage thresholds for fluences greater than 6.60 x 10 exp 12 ncm2 and for all temperatures can be extrapolated from the results of this work.

Subject Categories:

  • Electrical and Electronic Equipment
  • Nuclear Physics and Elementary Particle Physics
  • Nuclear Radiation Shielding, Protection and Safety

Distribution Statement:

APPROVED FOR PUBLIC RELEASE