LUT-based non-linearity compensation for BES III TOF's time measurement

Shubin LIU; Changqing FENG; Han YAN; Qi AN

doi:10.13538/j.1001-8042/nst.21.49-53

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LUT-based non-linearity compensation for BES III TOF's time measurement

NUCLEAR ELECTRONICS AND INSTRUMENTATION | Updated：2021-01-29

- LUT-based non-linearity compensation for BES III TOF's time measurement
- Nuclear Science and Techniques Vol. 21, Issue 1, (2010)
- Affiliations：
  
  1.Key Laboratory of Technologies of Particle Detection & Electronics, Chinese Academy of Sciences,
  2.Anhui Key Laboratory of Physical Electronics, Department of Modern Physics, University of Science and technology of China, Hefei 230026, China
- Author bio：
  
  Corresponding author. E-mail address: anqi@ustc.edu.cn
- Funds：
- DOI：10.13538/j.1001-8042/nst.21.49-53
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Shubin LIU, Changqing FENG, Han YAN, et al. LUT-based non-linearity compensation for BES III TOF's time measurement. [J]. Nuclear Science and Techniques 21(1):49-53(2010)
DOI：

Shubin LIU, Changqing FENG, Han YAN, et al. LUT-based non-linearity compensation for BES III TOF's time measurement. [J]. Nuclear Science and Techniques 21(1):49-53(2010) DOI： 10.13538/j.1001-8042/nst.21.49-53.

摘要

Abstract

The impact of the integral non-linearity (INL) to the time resolution of HPTDC (High Performance Time to Digital Converter) is presented in this paper. An INL correction method based on look-up table (LUT), is proposed to minimize such INL and improve the time resolution. This scheme is implemented in a single Field Programmable Gate Array (FPGA) device for real-time compensation. The INL characteristic estimation is based on a statistical approach, in which a sufficiently large number of random input signals are measured. The prototype tests show that the deviation for time resolution due to INL can be reduced greatly, from more than 80 ps to less than 20 ps, which can meet the requirement of BES (Beijing Spectrometer) III Time-Of-Flight detector.

关键词

Keywords

INLResolutionHPTDCLUTCompensation

references

BES III Collaboration, the Preliminary Design Report of the BES-III Detector, Beijing: CAS/IHEP, available at http://bes.ihep.ac.cn/bes3/design05/design/design1.htm, 2004, 130-134.

Christiansen J. High performance time to digital converter (Version2.2), CEREN: CERN Digital Microelectronics Group, available at http://tdc.web.cern.ch/tdc/hptdc/docs/hptdc_manual_ver2.2.pdf, 2004, 3-5.

Walt Kester, Mixed-signal and DSP design techniques, USA: Analog Devices, Inc. ISBN-0-916550-23-0, 2003, 2.8-2.10.

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Fachini P, Zhangbu X, et al. Technical Design Update to Proposal for a Large Area Time of Flight System for STAR, New York, USA: The STAR TOF Collaboration, available at http://www.star.bnl.gov/public/tof/, 2005, 44-46.

Schambach J, Hoffmann G, Kajimoto K, et al., Interna J Modern Phys E, 2007: 2496-2502.

Wu J J, Heng Y K, Liu S B, et al., Performance test of BESIII TOF electronics by PMT signal, Nucl Tech, 2008, 31(1): 5-9. (in Chinese)

Liu S B, Feng C Q, An Q, et al., BES III Time-Of-Flight Readout System, IEEE Trans. Nucl. Sci., to be published in Dec. 2009.

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