Study of cluster reconstruction and track fitting algorithmsfor CGEM-IT at BESIII

Yue Guo; Liang-Liang Wang; Xu-Dong Ju; Ling-Hui Wu; Qing-Lei Xiu; Hai-Xia Wang; Ming-Yi Dong; Jing-Ran Hu; Wei-Dong Li; Wei-Guo Li; Huai-Min Liu; Qun Ou-Yang

doi:10.1088/1674-1137/40/1/016201

Chinese Physics C> 2016, Vol. 40> Issue(1) : 016201 DOI: 10.1088/1674-1137/40/1/016201

Study of cluster reconstruction and track fitting algorithmsfor CGEM-IT at BESIII

1.
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
2.
University of Chinese Academy of Sciences, Beijing 100049, China
3.
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
4.
Central China Normal University, Wuhan 430079, China

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Abstract：
Considering the effects of aging on the existing Inner Drift Chamber (IDC) of BESIII, a GEM-based inner tracker, the Cylindrical-GEM Inner Tracker (CGEM-IT), is proposed to be designed and constructed as an upgrade candidate for the IDC. This paper introduces a full simulation package for the CGEM-IT with a simplified digitization model, and describes the development of software for cluster reconstruction and track fitting, using a track fitting algorithm based on the Kalman filter method. Preliminary results for the reconstruction algorithms which are obtained using a Monte Carlo sample of single muon events in the CGEM-IT, show that the CGEM-IT has comparable momentum resolution and transverse vertex resolution to the IDC, and a better z-direction resolution than the IDC.
- BESIII ,
- CGEM-IT ,
- simulation ,
- cluster reconstruction ,
- Kalman filter

References

[1]	M. Ablikim et al (BESIII Collaboration), Nucl. Instrum. Methods A, 614: 345-399 (2010)
[2]	BEPCII Preliminary Design Report (2002)
[3]	BESIII Cylindrical GEM Inner Tracker CDR (2014)
[4]	F. Sauli, Nucl. Instrum. Methods A, 386: 531-534 (1997)
[5]	W. D. Li, H. M. Liu et al, The Offline Software for the BESIII Experiment, in Proceeding of CHEP06 (Mumbai 2006)
[6]	S. Agostineli et al, Nucl. Instrum. Methods A, 506: 250-303 (2003)
[7]	F. Sauli, Principles of Operation of Multiwire Proportional and Drift Chambers, CERN-77-09 (1977)
[8]	Q. G. Liu et al, Chin. Phys. C, 32(07): 565-571 (2008)
[9]	Y. Zhang et al, HEP NP, 31(06): 570-575 (2007)
[10]	D.Y. Wang, Track Fitting with Kalman Filter for BESIII Drift Chamber, BESIII Technical Note (2006)

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Yue Guo, Liang-Liang Wang, Xu-Dong Ju, Ling-Hui Wu, Qing-Lei Xiu, Hai-Xia Wang, Ming-Yi Dong, Jing-Ran Hu, Wei-Dong Li, Wei-Guo Li, Huai-Min Liu and Qun Ou-Yang. Study of cluster reconstruction and track fitting algorithmsfor CGEM-IT at BESIII[J]. Chinese Physics C, 2016, 40(1): 016201. doi: 10.1088/1674-1137/40/1/016201

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Received: 2015-04-13
Revised: 2015-06-16

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Supported by National Key Basic Research Program of China (2015CB856700), National Natural Science Foundation of China (11205184, 11205182) and Joint Funds of National Natural Science Foundation of China (U1232201)

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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

Study of cluster reconstruction and track fitting algorithmsfor CGEM-IT at BESIII

Corresponding author: Yue Guo,

Corresponding author: Liang-Liang Wang,

1. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
2. University of Chinese Academy of Sciences, Beijing 100049, China
3. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
4. Central China Normal University, Wuhan 430079, China

Received Date: 2015-04-13
Accepted Date: 2015-06-16
Available Online: 2016-01-20

Fund Project: Supported by National Key Basic Research Program of China (2015CB856700), National Natural Science Foundation of China (11205184, 11205182) and Joint Funds of National Natural Science Foundation of China (U1232201)

Abstract: Considering the effects of aging on the existing Inner Drift Chamber (IDC) of BESIII, a GEM-based inner tracker, the Cylindrical-GEM Inner Tracker (CGEM-IT), is proposed to be designed and constructed as an upgrade candidate for the IDC. This paper introduces a full simulation package for the CGEM-IT with a simplified digitization model, and describes the development of software for cluster reconstruction and track fitting, using a track fitting algorithm based on the Kalman filter method. Preliminary results for the reconstruction algorithms which are obtained using a Monte Carlo sample of single muon events in the CGEM-IT, show that the CGEM-IT has comparable momentum resolution and transverse vertex resolution to the IDC, and a better z-direction resolution than the IDC.

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Study of cluster reconstruction and track fitting algorithmsfor CGEM-IT at BESIII

Corresponding author: Yue Guo,

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