Trapezoidal pulse shaping for pile-up pulse identification in X-ray spectrometry

ZHOU Jian-Bin; LIU Yi; HONG Xu; ZHOU Jin; MA Ying-Jie; WANG Min; HU Yun-Chuan; CHEN Bao; YUE Ai-Zhong

doi:10.1088/1674-1137/39/6/068201

Chinese Physics C> 2015, Vol. 39> Issue(6) : 068201 DOI: 10.1088/1674-1137/39/6/068201

Trapezoidal pulse shaping for pile-up pulse identification in X-ray spectrometry

Abstract
HTML
Reference
Related

PDF

Abstract：
Energy resolution is affected by the intrinsic energy resolution of the detector, ballistic deficit, pile-up pulses and noise. Pile-up pulses become the dominant factor that degrades energy resolution after the system is established, so pile-up rejection is often applied to obtain good energy resolution by discarding pulses that are expected to be contaminated by pile-up. However, pile-up rejection can reduce count rates and thus lower the measurement precision. In order to improve count rates and maintain energy resolution, a new method of pile-up pulse identification based on trapezoidal pulse shaping is presented. Combined with pulse width discrimination, this method is implemented by recording pulses that are not seriously piled up. Some experimental tests with a Cu-Pb alloy sample are carried out to verify the performance of this method in X-ray spectrometry. The results show that the method can significantly improve count rates without degrading energy resolution.

References

[1]

ZHANG Ruan-Yu. On the Study of Digital Nuclear Spectrum System (Ph. D. Thesis). Sichuan: Sichuan University, 2006 (in Chinese)[2] WANG Jing-Jin. Nuclear Electronics. Beijing: Atomic Energy Press, 1983. 242 (in Chinese)[3] Bradley A Roscoe, A Keith Furr. Nucl. Instrum. Methods, 1977, 140: 401[4] Richard M Lindstrom, Ronald F Fleming. Radioact Radiochem, 1995, 6(2): 20[5] Danon Y, Sones B, Block R. Nucl. Instrum. Methods Phys. Res., Sect. A, 2004, 524: 287[6] DI Yu-Ming, FANG Guo-Ming, QIU Xiao-Lin et al. Atomic Energy Science and Technology, 2008, 42(4): 370 (in Chinese)[7] Nakhostin M, Podolyak Z, Regan P H et al. Rev. Sci. Instrum., 2010, 81(10): 103507[8] Taguchi K, Frey E C, WANG Xiao-Lan. Med. Phys., 2010, 37(8): 3957[9] Scoullar P A B, Mclean C C, Evans R J. Real Time Pulse Pile-up Recovery in A High Throughput Digital Pulse Processor. Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC). Valencia: World Scientific, 2011[10] CHEN Shi-Guo. Design and Realization of The Gaussian Shaping Filtering in Digital Nuclear Instrument System (Ph. D. Thesis). Sichuan: Sichuan University, 2005 (in Chinese)[11] ZHOU Jian-Bin, ZHOU Wei, HONG Xu. Nucl. Sci. Tech., 2013, 24(6): 060401[12] Valentin T. Jordanov, Glenn F. Nucl. Instrum. Methods Phys. Res., Sect. A, 1994, 345: 337[13] Valentin T. Jordanov, Glenn F. Knoll, Alan C. Huber et al. Nucl. Instrum. Methods Phys. Res., Sect. A, 1994, 353: 261[14] ZHOU Jian-Bin, WANG Min, ZHOU Wei et al. Atomic Energy Science and Technology, 2014, 48(2): 352 (in Chinese)

[1] GUO Yun-Jun , HE Kang-Lin . Muon Identification Using the Efficiencies Ratio Method at BESⅡ. Chinese Physics C, 2007, 31(11): 1050-1055.
Access

Get Citation

ZHOU Jian-Bin, LIU Yi, HONG Xu, ZHOU Jin, MA Ying-Jie, WANG Min, HU Yun-Chuan, CHEN Bao and YUE Ai-Zhong. Trapezoidal pulse shaping for pile-up pulse identification in X-ray spectrometry[J]. Chinese Physics C, 2015, 39(6): 068201. doi: 10.1088/1674-1137/39/6/068201

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2014-09-28
Revised: 2014-12-19

Article Metric

Article Views(3099)
PDF Downloads(134)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Trapezoidal pulse shaping for pile-up pulse identification in X-ray spectrometry

Corresponding author: LIU Yi,

Received Date: 2014-09-28
Accepted Date: 2014-12-19
Available Online: 2015-06-05

Abstract: Energy resolution is affected by the intrinsic energy resolution of the detector, ballistic deficit, pile-up pulses and noise. Pile-up pulses become the dominant factor that degrades energy resolution after the system is established, so pile-up rejection is often applied to obtain good energy resolution by discarding pulses that are expected to be contaminated by pile-up. However, pile-up rejection can reduce count rates and thus lower the measurement precision. In order to improve count rates and maintain energy resolution, a new method of pile-up pulse identification based on trapezoidal pulse shaping is presented. Combined with pulse width discrimination, this method is implemented by recording pulses that are not seriously piled up. Some experimental tests with a Cu-Pb alloy sample are carried out to verify the performance of this method in X-ray spectrometry. The results show that the method can significantly improve count rates without degrading energy resolution.