Details

Autor(en) / Beteiligte

• Zhou, Wei
• Zhang, Zhi-Ming
• Li, Dao-Wu
• Wang, Pei-Lin
• Feng, Bao-Tong
• Huang, Xian-Chao
• Hu, Ting-Ting
• Li, Xiao-Hui
• Chen, Yan
• Wang, Ying-Jie
• Liu, Yan-Tao
• Zhang, Yi-Wen
• Sun, Shi-Feng
• Gu, Xiao-Yue
• Yang, Ming-Jie
• Xiao, Xiong
• Wei, Long

Titel

A QTC-based signal readout for position-sensitive multi-output detectors

Ist Teil von

• Nuclear science and techniques, 2016-10, Vol.27 (5), p.208-214, Article 119

Ort / Verlag

Singapore: Springer Singapore

Erscheinungsjahr

2016

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• A new signal readout method for position-sen-sitive multi-output detectors, such as those in high-energy spectroscopy measurement and nuclear imaging, was developed by combining the charge division circuit, summing circuit and charge-to-time conversion （QTC） circuit. The 64 outputs of a Hamamatsu H8500 position-sensitive photomultiplier tube were processed, and three digital pulses were generated. The widths of digital pulses were determined using the time-to-digital converter in an field programmable gate array. The energy and position information of incident γ-rays is estimated based on the pro-portionality between the width of digital pulses and input charge created by γ-photons. A prototype was built using discrete components and tested, and the energy and position resolutions were improved compared with that obtained with standard ADCs. This method greatly simplifies the front-end electronics and the digital interface. It enables a compact electronics system and an easy inte-gration into an ASIC.