Study on a Cellmap for the Reconstruction of Cosmic Ray Tracks in Drift Chamber

LEI Yu; YAO Zhi-Guo; MA Yu-Qian

Chinese Physics C> 2005, Vol. 29> Issue(6) : 599-603

Study on a Cellmap for the Reconstruction of Cosmic Ray Tracks in Drift Chamber

Key Laboratory of Particle Astrophysics,Institute of High Energy Physics,CAS,Beijing 100049,China2 Swiss Federal Institute of Technology,Zürich CH-8093,Switzerland

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Abstract：
Taking L3 Cosmics experiment (L3+C) as an example, we discussed a new Cellmap to reconstruct the hit in drift chamber of magnetic spectrometer for the very inclined comic-ray tracks, and compared the reconstruction results with the standard Cellmap of L3+C. It shows that, for the very inclined cosmic-ray tracks, the new Cellmap can reconstruct more hits than the standard Cellmap, and the distribution of χ2 of track reconstruction is also improved.

References

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.MA Ji-Mao et al.HEPNP,1989,13(9):784-786 (in Chinese)(马基茂等.高能物理与核物理,1989,13(9):784-786)2.Adriani O et al.Nucl.Instrum.Methods,2002,A488:2093.Adeva B et al.Nucl.Instrum.Methods,1989,A227:1874.Achard P et al(L3 Collaborat ion).Phys.Lett.,2004,B598(1-2):15.325.Onvlee J.The Behavior of the L3 Muon Chambers in a Magnetic Field.Ph.D.Thesis,University of Amsterdam,19896.Bock R K,Vasilescu A.The Part icle Detector Brief Book.Berlin:Springer,19987.Zillig M.L3+ Cosmics: First Data Analysis-Reconstruction of VeryInclined Tracks.Diploma Thesis,ETH,Z-rich,19988.Veenhof R.Garfield,a Drift-Chamber Simulat ion Program.User.sGuide.CERN,19959.James F.MINUIT,Function Minimization and Error Analysis,Refe-rence Manual.CERN,1994

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LEI Yu, YAO Zhi-Guo and MA Yu-Qian. Study on a Cellmap for the Reconstruction of Cosmic Ray Tracks in Drift Chamber[J]. Chinese Physics C, 2005, 29(6): 599-603.

LEI Yu, YAO Zhi-Guo and MA Yu-Qian. Study on a Cellmap for the Reconstruction of Cosmic Ray Tracks in Drift Chamber[J]. Chinese Physics C, 2005, 29(6): 599-603. shu

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Received: 2004-11-15
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Study on a Cellmap for the Reconstruction of Cosmic Ray Tracks in Drift Chamber

Corresponding author: LEI Yu,

Key Laboratory of Particle Astrophysics,Institute of High Energy Physics,CAS,Beijing 100049,China2 Swiss Federal Institute of Technology,Zürich CH-8093,Switzerland

Received Date: 2004-11-15
Accepted Date: 1900-01-01
Available Online: 2005-06-05

Abstract: Taking L3 Cosmics experiment (L3+C) as an example, we discussed a new Cellmap to reconstruct the hit in drift chamber of magnetic spectrometer for the very inclined comic-ray tracks, and compared the reconstruction results with the standard Cellmap of L3+C. It shows that, for the very inclined cosmic-ray tracks, the new Cellmap can reconstruct more hits than the standard Cellmap, and the distribution of χ2 of track reconstruction is also improved.