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Estudio del funcionamiento del detector de neutrinos Double Chooz (Study of the performance of the Double Chooz neutrino detector)

López Castaño, José Mariano (2011) Estudio del funcionamiento del detector de neutrinos Double Chooz (Study of the performance of the Double Chooz neutrino detector). [Trabajo Fin de Máster]

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Abstract

Double Chooz is a reactor neutrino oscillation experiment whose purpose is the measurement of the still unknown mixing angle θ_13. It is based on the past CHOOZ
experiment which has the best limit on this parameter. Double Chooz aims to reduce the systematic error of this measurement up to 0.6% using two identical detectors to
eliminate the uncertainty on the antineutrino flux coming from reactors.
The main goal of this work is to perform a calibration of the far detector to check its performance and compute the gain of the electronic channels. This is necessary to
estimate the energy deposited by each event from the registered data.
The first data taken with the far detector using a LEDs system have been analyzed for this study. The pulse baselines have been used to check the performance of the detector and the single photoelectron spectrum to compute the gain of all the channels.
The results of this study have proven that there is no noisy channels that can be a problem for the Double Chooz data analysis. In addition, the gain of each channel
has been computed obtaining an average detector gain of 50.73 digital units of charge per photoelectron. [RESUMEN]

Double Chooz es un experimento de oscilaciones de neutrinos en reactores nucleares que pretende medir el ángulo de mezcla θ_13, todavía desconocido. Es el sucesor del
experimento CHOOZ, que hasta ahora tiene el mejor límite en este parámetro. Double Chooz pretende reducir el error sistemático de esta medida al 0.6 %, utilizando dos detectores idénticos para así eliminar la incertidumbre en el flujo de antineutrinos emitidos por los reactores.
El objetivo principal de este trabajo es realizar una calibración del detector lejano.
Con esta calibración se pretende comprobar el correcto funcionamiento del detector y calcular la ganancia de los canales electrónicos. Esto es necesario para poder estimar la energía depositada por cada suceso a partir de los datos registrados.
Para este estudio se han utilizado los primeros datos tomados con el detector lejano utilizando un sistema de LEDs. Se ha estudiado el baseline de los pulsos para comprobar el correcto funcionamiento del detector y los espectros de carga de un fotoelectrón para calcular la ganancia.
Los resultados de este estudio han probado que en Double Chooz no hay canales ruidosos que puedan suponer un problema para el análisis. Además, se ha calculado la
ganancia de cada canal obteniendo una ganancia media del detector de 50.73 unidades digitales de carga por cada fotoelectrón.


Item Type:Trabajo Fin de Máster
Additional Information:

Master en Física Fundamental. Facultad de Ciencias Físicas. Curso 2010-2011

Directors:
DirectorsDirector email
Gil Botella, Inésines.gil@ciemat.es
Novella Garijo, Pau pau.novella@ciemat.es
Uncontrolled Keywords:Neutrino, Ángulo de Mezcla, Oscilación, Double Chooz, Calibración, Ganancia, Fotomultiplicador, Reactor, Neutrino, Mixing Angle, Oscillation, Double Chooz, Calibration, Gain, Photomultiplier, Reactor
Subjects:Sciences > Physics > Particles
ID Code:13361
References:

[1] Bergess and Moore. The Standard Model:A Primer. Cambridge: 1ª Edición (2006).

[2] J.F.Gunion, H.Haber and G.Kane. The Higgs hunter's guide. Editorial Perseus. 2000.

[3] K.Nakamura. (Particle data group), J.Phys.G37,075021(2010).

[4] B.Pontecorvo. Mesonium and antimesonium. Sov. Phys. JETP, 6, 429, 1957.

[5] Z. Maki, M.Nakagawa and S.Sakata. Remarks on the unifed model of elementary particles. Prog. Theor. Phys., 28, 870, 1962.

[6] C.Giunti and Chung W. Kim. Fundamentals of Neutrino Physics and Astrophysics. Oxford (2007).

[7] B.T.Cleveland. Measurement of the solar electron neutrino flux with the Homestake chlorine detector. Astrophysics Journal, 496, 505-526, 1998.

[8] J.N.Abdurashitov. Measurementes of the solar neutrino capture rate by the Russian-American gallium solar neutrino experiment during one half and the 22-year cycle of solar activity. J. Exp. Theor. Phys., 95, 181-193, astroph/0204245,2002.

[9] M.Altmann. Complete results for five years of GNO solar netrino observations. Phy. Lett. B, 616, 174, hepex/ 0504037,2005

[10] Y.Fukuda. Solar neutrino data covering solar cycle 22. Phys. Rev. Lett., 77 1683-1686,1996

[11] J.Hosaka. Solar neutrino measurements in SuperKamiokande I. Phys.Rev. D73, 112001, hep-ex/0508053, 2006

[12] Q.R.Ahmad. Measurement of the rate νe + d → p + p + e־ interactions produced by 8B solar neutrinos at the Sedbury Neutrino Observatory. Phys. Rev. Lett., 87, 071301, nuclex/0106015, 2001.

[13] K.S.Hirata. Experimental study of the atmospheric neutrino ux.Phys. Lett.B, 205, 416-420, 1988.

[14] D. Casper. Measurement of atmospheric neutrino composition with the IMB-3 detector. Phys. Rev. Lett., 66, 2561-2564, 1991.

[15] Y.Ashie. A measurement of atmospheric neutrino oscillation parameters by Super-Kamiokande I. Phys. Rev. D71, 112005, hep-ex/0501064, 2005.

[16] Y.Fukuda. Evidence for oscillation of atmospheric neutrinos. Phys. Rev. Lett., 81, 1562-1567, hep-ex/9807003, 1998.

[17] M. Sanchez. Observation of atmospheric neutrino oscillation in Soudan 2. Phys. Rev. D68, 113004, hepex/0304037, 2003.

[18] M. Ambrosio. Atmospheric neutrinos oscillations from upward through-going muon multiple scattering in MACRO. Phys. Lett. B, 566, 35, hep-ex/0307069,2003.

[19] M.H.Ahn. Measurement of neutrino oscillation by the K2K experiment. Phys.Rev. D74, 072003, hep-ex/0606032, 2006.

[20] D.G.Michael. Observation of muon neutrino disappearance with the MINOS detectors in the NuMI neutrino Estudio del funcionamiento del detector de neutrinos Double Chooz beam. Phys. Rev.Lett., 97, 191801, hep-ex/0607088, 2006.

[21] Y.Itow. (T2K Collaboration). (2001).arXiv:hep-ex/0106019.

[22] K.Eguchi. First results from Kam-LAND: evidence for reactor antineutrino disappearance. Phys. Rev. Lett.,90, 021802, hep-ex/0212021, 2003. Lett., 97, 191801, hepex/0607088, 2006.

[23] F.Boehm. Final results from the Palo Verde neutrino oscillation experiment. Phys. Rev. D64, 112001, hepex/ 0107009, 2001.

[24] M. Apollonio. Initial results from the CHOOZ long baseline reactor neutrino oscillation experiment. Phys. Lett. B, 420, 397, 1998.

[25] T. Schwetz, M. Tortola and J. W. F. Valle. Global neutrino data and recent reactor fluxes: status of three-favour oscillation parameters, New J. Phys. 13 (2011) 063004 [arXiv:1103.0734 [hep-ph]].

[26] S.P.Mikheev y A.Yu.Smirnov. Resonance enhancement of oscillations in matter and solar neutrino spectroscopy. Sov. J. Nucl. Phys., 42, 913-917, 1985.

[27] Hamamatsu: Photomultiplier Tubes. Basics and Applications. Third Edition (2006). 353 Hamamatsu Photonics.

[28] Akiri, Tarek. Test des flash-ADCs, optimisation de la conception du détecteur et développement d'un noveau concept de reconstruction spaciale dans l'experience de neutrino Double Chooz. Tesis doctoral, L'Université Paris diderot. (2010)

Deposited On:19 Oct 2011 11:43
Last Modified:16 Nov 2011 11:58

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