SiPM-based neutron Anger camera with auto-calibration capabilities

Abstract

We present characterization results of a neutron Anger camera based on a lithium-6 loaded cerium activated silicate glass scintillator (33.3 x 33.3 x 1 mm 3 ) and an array of 64 silicon photomultipliers. Reconstruction of the scintillation events is performed with a statistical method, implemented on a graphics processing unit (GPU). We demonstrate that the light response model of the detector can be obtained from flood irradiation calibration data using an unsupervised iterative procedure. The useful field of view is 28 x 28 mm 2 . The spatial resolution measured at 2.5 Å neutron beam is better than 0.6 mm FWHM and the energy resolution at the neutron peak is 11%.

Performance test of different silicon photomultipliers for the 6LiF:ZnS(Ag) based neutron detectors of CSNS

“…They have been widely used in several fields for photoelectric detection [28,29]. Recently, some researchers have employed them in neutron detection applications [30,31]. Most are small-area neutron position-sensitive detectors [32][33][34] or neutron counters [35][36][37].…”