Analysis of digital timing methods with BaF2 scintillators

被引：46

作者：

Nelson, MA ^{[1
]}

Rooney, BD ^{[1
]}

Dinwiddie, DR ^{[1
]}

Brunson, GS ^{[1
]}

机构：

[1] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2003年 / 505卷 / 1-2期

关键词：

digital signal timing; constant-fraction discrimination; pulse shape fitting; digital pulse timing;

D O I：

10.1016/S0168-9002(03)01078-7

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Various digital methods were examined for determining the relative arrival,times of pulses from to 5.08 x 2.54 cm. BaF2 scintillators. In this study, pulses from the photomultiplier tubes were digitized by a 1 Gs/s analog-to-digital converter and post processed with multiple techniques. These techniques include: (1) leading edge discrimination, (2) moment-analysis, (3) constant-fraction discrimination, (4) digital constant-fraction discrimination, (5) triangular pulse shaping with a leading edge linear regression, and (6) pulse-shape fitting. Average timing resolutions of 456 +/- 8 ps were obtained with constant-fraction discrimination, which is slightly higher than the analog average resolution of 419 +/- 7 ps. This study explores the application of these digital techniques for pulse-timing applications and their potential advantages and limitations. Published by Elsevier Science B.V.

引用

页码：324 / 327

页数：4