期刊
出版社
ELSEVIER
DOI: 10.1016/j.nima.2020.163967
关键词
FAIR; DESPEC; NuSTAR; Fast timing; LaBr3(Ce) scintillator detectors
类别
资金
- UK Science and Technology Facilities Council (UK STFC) [ST/G000751/1, ST/G000697/1, ST/G000638/1, ST/G000689/1, ST/G000727/1, ST/P006698/1]
- UK STFC [ST/L005743/1, ST/P005314/1]
- UK Department of Business, Energy and Industrial Strategy (BEIS) via the National Measurement System (NMS)
- STFC UK Nuclear Data Network
- Marion Redfern Trust of the University of Surrey
- Spanish MINECO [FPA2015-65035-P, RTI2018-098868-B-I00]
- NuPNET network FATIMA [PRI-PIMNUP-2011-1338]
- BMBF, Germany [05P15PKFNA, 05P19PKFNA]
- STFC [ST/G008787/1, ST/G000697/1, 2014 STFC Nuclear Physics CG, ST/L005794/1, ST/G000638/1, ST/G000727/1, ST/L005743/1, ST/P005314/1, ST/G000689/1, ST/P003982/1, ST/G000751/1, ST/P006698/1, 2017 STFC Nuclear Physics CG, ST/P004423/1] Funding Source: UKRI
The components, working principle and characteristics of FATIMA (FAst TIMing Array), a fast-timing detector system for DESPEC at FAIR, are described. The core system includes 36 LaBr3(Ce) scintillator detectors, a mounting frame for the DESPEC station and a VME-based fast-timing data acquisition system. The current electronic timing circuit is based on V812 constant fraction discriminators and V1290 time-to-digital converters. Gamma-ray energies are measured using V1751 digitisers. Characteristics of the core FATIMA system including efficiency, energy, and coincidence resolving time, as well as limitations, are discussed on the basis of test measurements performed in the S4 cave at GSI, Germany. The coincidence gamma-gamma time resolution for the prompt Co-60 cascade is determined to be similar to 320 ps full width at half maximum. The total full energy peak efficiency at 1 MeV for the 36 detector array in the DESPEC setup is 2.9%. The energy-dependent prompt response centroid curve with the current CFD/TDC combination is shown to be smooth; the centroid shift method can be applied for the measurement of half-lives below 200 ps. An overview of applications of the FATIMA detectors as an ancilliary system in combination with other detector arrays during recent years is given. Data on the operation of the detectors in the presence of magnetic fields are presented.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据