Neutron Bang Time Detector Based on a Light Pipe

Conference · Thu May 08 04:00:00 EDT 2008

DOI:https://doi.org/10.1063/1.2955571· OSTI ID:939461

Glebov, V Y; Moran, M; Stoeckl, C; Sangster, T C; Cruz, M

A neutron bang time detector consisting of a scintillator, light pipe, photomultiplier tube (PMT), and high-bandwidth oscilloscope has been implemented on the 60-beam, 30-kJ OMEGA Laser Facility at the University of Rochester's Laboratory for Laser Energetics. Light from the scintillator, located 23 cm from the target, is transmitted outside the target bay through a 9.6-m-long, 2-in.-diam polished stainless steel pipe to the PMT. The PMT signal is recorded by two channels of a 6-GHz, 10-GS/s Tektronix 6604 oscilloscope. The OMEGA optical fiducial pulse train is recorded on the third oscilloscope channel using a fast photodiode to provide the timing reference to the laser. The bang-time detector is absolutely calibrated in time and is able to measure bang time for neutron yields above 1 x 10{sup 9} with accuracy of better than 25 ps.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 939461
• Report Number(s): LLNL-CONF-403785
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
ACCURACY
LASERS
LIGHT PIPES
NEUTRONS
PHOTODIODES
PHOTOMULTIPLIERS
PLASMA DIAGNOSTICS
STAINLESS STEELS
TARGETS