Neutron-induced noise in NIF-class diagnostic instruments

Conference · Wed Jun 05 04:00:00 EDT 1996

OSTI ID:371327

Lerche, R A

Neutron yields form DT-filled ICF targets have reached 10{sup 14}. Above 10{sup 13}, a significant neutron-induced background appears in images recorded with nearby streak cameras. Since cameras components (streak tube, image-intensifier tube, and CCD array) are similar to components that will be used in many NIF instruments, streak camera images provide information about neutron-induced backgrounds that will be encountered in the NIF environment. At a fluence of 10{sup 7} neutrons/cm{sup 2}, the background consists of two distinct components: a uniform component equal to nearly 20% of the camera`s linear range and sharp, intense peaks each localized to just a couple of image pixels. About 80% of the uniform background is caused by interactions with the streak tube and image-intensifier tube. Nearly all of the sharp spikes are caused by interactions with pixels of the CCD array. The spikes make the most significant contribution to image noise.

• Research Organization: Lawrence Livermore National Lab., CA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 371327
• Report Number(s): UCRL-JC--123556; CONF-960543--30; ON: DE96013659
• Country of Publication: United States
• Language: English

Related Subjects

44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BACKGROUND NOISE
CHARGE-COUPLED DEVICES
DEUTERIUM
IMAGE INTENSIFIERS
IMAGES
INERTIAL CONFINEMENT
LASER FUSION REACTORS
PLASMA DIAGNOSTICS
STREAK CAMERAS
TRITIUM