A new compact, high sensitivity neutron imaging system

作者：Caillaud T^*; Landoas O; Briat M; Rosse B; Thfoin I; Philippe F; Casner A; Bourgade J L; Disdier L; Glebov V Yu; Marshall F J; Sangster T C; Park H S; Robey H F; Amendt P

来源：Review of Scientific Instruments, 2012, 83(10): 10E131.

DOI：10.1063/1.4739314

We have developed a new small neutron imaging system (SNIS) diagnostic for the OMEGA laser facility. The SNIS uses a penumbral coded aperture and has been designed to record images from low yield (10(9)-10(10) neutrons) implosions such as those using deuterium as the fuel. This camera was tested at OMEGA in 2009 on a rugby hohlraum energetics experiment where it recorded an image at a yield of 1.4 x 10(10). The resolution of this image was 54 mu m and the camera was located only 4 meters from target chamber centre. We recently improved the instrument by adding a cooled CCD camera. The sensitivity of the new camera has been fully characterized using a linear accelerator and a Co-60 gamma-ray source. The calibration showed that the signal-to-noise ratio could be improved by using raw binning detection.

• 出版日期2012-10
• 单位中国地震局