New methodical developments for GRANIT

S. Baessler; A.M. Gagarski; E.V. Lychagin; A. Mietke; A.Yu. Muzychka; V.V. Nesvizhevsky; G. Pignol; A.V. Strelkov; B.P. Toperverg; K. Zhernenkov

doi:10.1016/j.crhy.2011.04.014

New methodical developments for GRANIT

S. Baessler ^1,²; A.M. Gagarski ³; E.V. Lychagin ⁴; A. Mietke ⁵; A.Yu. Muzychka ⁴; V.V. Nesvizhevsky ⁶ ; G. Pignol ⁷; A.V. Strelkov ⁴; B.P. Toperverg ^3,⁸; K. Zhernenkov ⁸

¹ University of Virginia, Charlottesville, VA-22904, USA
² Oak Ridge Nat. Lab., Oak Ridge, TN-37831, USA
³ PNPI, Orlova Roscha, Gatchina, RU-188300, Russia
⁴ JINR, 6 Joliot-Curie, Dubna, RU-141980, Russia
⁵ Faculty of Science, Department of Phys., Technical University, Dresden, G-01062, Germany
⁶ ILL, 6 rue Jules Horowitz, Grenoble, F-38042, France
⁷ LPSC/IN2P3-UJF-INPG, 53 rue des Martyrs, Grenoble, F-38026, France
⁸ Ruhr Univ. Bochum, 150 Universitatstrasse, Bochum, G-44780, Germany

Comptes Rendus. Physique, Ultra cold neutron quantum states, Volume 12 (2011) no. 8, pp. 729-754.

Abstract
Résumé

New methodical developments for the GRANIT spectrometer address further improvements of the critical parameters of this experimental installation, as well as its applications to new fields of research. Keeping in mind an extremely small fraction of ultra cold neutrons (UCN) that could be bound in gravitational quantum states, we look for methods to increase statistics due to: developing UCN sources with maximum phase-space density, counting simultaneously a large fraction of neutrons using position-sensitive detectors, and decreasing detector backgrounds. Also we explore an eventual application of the GRANIT spectrometer beyond the scope of its initial goals, for instance, for reflectometry with UCN.

De nouveaux développements méthodologiques relatifs au spectromètre GRANIT concernent lʼamélioration des paramètres critiques de cette installation expérimentale, ainsi que des applications à de nouveaux domaines de recherche. Compte tenu du nombre extrêmement faible de neutrons ultra froids (UCN) qui pourraient être liés dans les états quantiques gravitationnels, nous recherchons des moyens dʼaméliorer la statistique afin de développer des sources UCN dont la densité est maximale dans lʼespace des phases, de compter simultanément une large fraction de neutrons en utilisant des détecteurs sensibles à la position, et de diminuer le bruit de fond des détecteurs. En outre, nous étudions une application éventuelle du spectromètre GRANIT au-delà de ses objectifs initiaux, par exemple pour la réflectométrie avec des UCN.

Received: 2011-01-16
Accepted: 2011-04-29
Published online: 2011-08-03

DOI: 10.1016/j.crhy.2011.04.014

Keywords: Ultra cold neutrons, Quantum mechanics, Gravitation, High-resolution spectroscopy, Nanoparticles, Neutron detectors
Mots-clés : Neutrons ultra froids, Mécanique quantique, Gravitation, Spectroscopie à haute résolution, Nanoparticules, Détecteurs de neutrons

Author's affiliations:

S. Baessler ^{1, 2}; A.M. Gagarski ³; E.V. Lychagin ⁴; A. Mietke ⁵; A.Yu. Muzychka ⁴; V.V. Nesvizhevsky ⁶; G. Pignol ⁷; A.V. Strelkov ⁴; B.P. Toperverg ^{3, 8}; K. Zhernenkov ⁸

¹ University of Virginia, Charlottesville, VA-22904, USA
² Oak Ridge Nat. Lab., Oak Ridge, TN-37831, USA
³ PNPI, Orlova Roscha, Gatchina, RU-188300, Russia
⁴ JINR, 6 Joliot-Curie, Dubna, RU-141980, Russia
⁵ Faculty of Science, Department of Phys., Technical University, Dresden, G-01062, Germany
⁶ ILL, 6 rue Jules Horowitz, Grenoble, F-38042, France
⁷ LPSC/IN2P3-UJF-INPG, 53 rue des Martyrs, Grenoble, F-38026, France
⁸ Ruhr Univ. Bochum, 150 Universitatstrasse, Bochum, G-44780, Germany

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     author = {S. Baessler and A.M. Gagarski and E.V. Lychagin and A. Mietke and A.Yu. Muzychka and V.V. Nesvizhevsky and G. Pignol and A.V. Strelkov and B.P. Toperverg and K. Zhernenkov},
     title = {New methodical developments for {GRANIT}},
     journal = {Comptes Rendus. Physique},
     pages = {729--754},
     publisher = {Elsevier},
     volume = {12},
     number = {8},
     year = {2011},
     doi = {10.1016/j.crhy.2011.04.014},
     language = {en},
}

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S. Baessler; A.M. Gagarski; E.V. Lychagin; A. Mietke; A.Yu. Muzychka; V.V. Nesvizhevsky; G. Pignol; A.V. Strelkov; B.P. Toperverg; K. Zhernenkov. New methodical developments for GRANIT. Comptes Rendus. Physique, Ultra cold neutron quantum states, Volume 12 (2011) no. 8, pp. 729-754. doi : 10.1016/j.crhy.2011.04.014. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2011.04.014/

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