Purity Monitor Studies in Medium Liquid Argon TPC

Authors: I. Badhrees

Abstract:

This paper is an attempt to describe some of the results that had been found through a journey of study in the field of particle physics. This study consists of two parts, one about the measurement of the cross section of the decay of the Z particle in two electrons, and the other deals with the measurement of the cross section of the multi-photon absorption process using a beam of Laser in the Liquid Argon Time Projection Chamber.

The first part of the paper concerns the results based on the analysis of a data sample containing 8120 ee candidates to reconstruct the mass of the Z particle for each event where each event has an ee pair with PT_(e) > 20GeV, and η_(e) < 2.5. Monte Carlo templates of the reconstructed Z particle were produced as a function of the Z mass scale. The distribution of the reconstructed Z mass in the data was compared to the Monte Carlo templates, where the total cross section is calculated to be equal to 1432pb.

The second part concerns the Liquid Argon Time Projection Chamber, LAr TPC, the results of the interaction of the UV Laser, Nd-YAG with λ= 266mm, with LAr and through the study of the multi-photon ionization process as a part of the R&D at Bern University. The main result of this study was the cross section of the process of the multi-photon ionization process of the LAr, σ_e = 1.24±0.10stat±0.30sys.10 -56cm⁴.

Keywords: ATLAS, CERN, KACST, LArTPC, Particle Physics.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1093295

References:

[1] F.Hazlen, A. D. Martin: Quarks and Leptons, 1984.
[2] D. H. Perkins: Introduction to High Energy Physics, 1972.
[3] D. J. Griffith: Introduction to Elementary Particles, 1987.
[4] Povh. Rith. Scholz. Zetsche: Particles and Nuclei, 1999.
[5] The ATLAS Collaboration: ATLAS Liquid Argon Calorimeter Technical Design Report, CERN/LHCC, 1996.
[6] Large Hadron Collider: Conceptual Design Report, CERN, 1995.
[7] John N. Bahcall: Neutrino Astrophysics, 1989.
[8] H. Bethe and R. Peierls, NATURE, 133, 532, April 7, 1934.
[9] B. Pontecorvo,: Inverse process, Chalk River Laboratory, Report PD 205, 1946.
[10] B. Pontecorvo, Sov. Phy. JETP 6,1958, 429.
[11] David O. Caldwell: Current Aspects of Neutrino Physics, 2001.
[12] Z. Maki, M. Nakagawa, and S. Sakata, Prog. Theory. Phys.28,1962, 870.
[13] J. N. Abdurashitov et al: SAGE Collaboration: Measurement of the solar neutrinos capture rate with gallium metal. III. Results for the 2002-2007 data taking period, (SAGE collaboration), Phys. Rev. C 80, 2009, 015805.
[14] R. Wendell et al: Atmospheric neutrino oscillation analysis with subleding effects in Super- Kamiokande I, II, III, (Super-Kamiokande Collaboration), Phys. Rev. D81 2010 092004.
[15] Y. Fakuda et al: Solar Neutrino data covering solar cycle 22, (KAMIOKANDE Collaboration), Phys. Rev. Lett. 77, 1996, 1683.
[16] K. Abe et al: Solar neutrino results in Super- Kamiokande I, Phys. Rev. D 83, 2011, 052 010.
[17] B. Aharmin et al: Low energy thresholds analysis of the phase I and phase II data sets of the Sudbury Neutrino Observatory, Phys. Rev. C81, 2010, 055 504.
[18] M. Apollonio et al: Limits on neutrino oscillations from the CHOOZ experiment, Phys. Rev. B 466, 1999, 415.
[19] A. A. Aguilar-Arevalo et al: Event Excess in the MiniBooNE search forne to (MiniBooNe Collaboration), Phys. Rev. Lett. 105, 2010, 181 801.
[20] C. Rubbia: The Liquid Argon time Projection Chamber: a new concept for Neutrino Detector, CERN-EP/77-08, 1977.
[21] S. Amerio et al: Design, construction and test of the ICARUS T600 detector, Nucl. Instr. And Meth. A 527, 2004, 329.
[22] J. Sun et al: Investigating laser-induced ionization of purified liquid argon in a time projection chamber, Nucl. Instrum. Methods Phys. Res. A 370 372, 1996.
[23] I. Badhrees et al: Measurement of the two-photon absorption cross-section of liquid Argon with a Time Projection Chamber, New. J. Phys. 12 (2010) 113024.
[24] H.J. Hilke: Detector calibration with lasers, A review, Nucl. instr. Meth. in Phys. Res. A 252 (1986) 196.
[25] J. Bourotte and B. Sadoulet: Ionization of multiwire proportional chamber gas by double photon absorption, Nucl. Instr. Meth173 (1980) 463.
[26] G. S. Hurst et al: Resonance ionization spectroscopy and one-atom detection, Rev. Mod. Phys. 51 (1979) 767.