Comptes Rendus
The GRANIT spectrometer
[Le spectromètre GRANIT]
Comptes Rendus. Physique, Volume 12 (2011) no. 8, pp. 707-728.

Lʼexistence dʼétats quantiques de la matière dans un champ gravitationnel a été démontrée récemment à lʼInstitut Laue–Langevin (ILL), Grenoble, dans une série dʼexpériences avec des neutrons ultra froids (UCN). Les UCN dans les états quantiques de basse énergie représente une excellente sonde pour la physique fondamentale, en particulier pour contraindre les forces supplémentaires à courte portée, ainsi quʼun outil en optique quantique et en physique des surfaces. Le GRANIT est un projet basé sur dʼun spectromètre de deuxième génération avec une ultra-haute résolution en énergie installé en permanence à ILL. Il a été construit dans le cadre dʼune subvention de lʼANR, et sera opérationnel en 2011.

The existence of quantum states of matter in a gravitational field was demonstrated recently in the Institut Laue–Langevin (ILL), Grenoble, in a series of experiments with ultra cold neutrons (UCN). UCN in low quantum states is an excellent probe for fundamental physics, in particular for constraining extra short-range forces; as well as a tool in quantum optics and surface physics. The GRANIT is a follow-up project based on a second-generation spectrometer with ultra-high energy resolution, permanently installed in ILL. It has been constructed in framework of an ANR grant; and will become operational in 2011.

Reçu le :
Accepté le :
Publié le :
DOI : 10.1016/j.crhy.2011.04.010
Keywords: Ultra cold neutrons, Quantum mechanics, Gravitation, High-resolution spectroscopy, Extra short-range interactions
Mot clés : Neutrons ultra froids, Mécanique quantique, Gravitation, Spectroscopie à haute résolution, Interactions à courte portée

Stefan Baessler 1, 2 ; Mathieu Beau 3 ; Michael Kreuz 3 ; Vladimir N. Kurlov 4 ; Valery V. Nesvizhevsky 3 ; Guillaume Pignol 5 ; Konstantin V. Protasov 5 ; Francis Vezzu 5 ; Aleksey Yu. Voronin 6

1 University of Virginia, Charlottesville, VA 22904, USA
2 Oak Ridge Nat. Lab., Oak Ridge, TN 37831, USA
3 ILL, 6 rue Jules Horowitz, Grenoble, F-38042, France
4 ISSP, 2 Institutskaia, Chernogolovka, RU-142432, Russia
5 LPSC/IN2P3-UJF-INPG, 53 rue des Martyrs, Grenoble, F-38026, France
6 Lebedev Institute, 53 Leninskii pr., Moscow, RU-119991, Russia
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Stefan Baessler; Mathieu Beau; Michael Kreuz; Vladimir N. Kurlov; Valery V. Nesvizhevsky; Guillaume Pignol; Konstantin V. Protasov; Francis Vezzu; Aleksey Yu. Voronin. The GRANIT spectrometer. Comptes Rendus. Physique, Volume 12 (2011) no. 8, pp. 707-728. doi : 10.1016/j.crhy.2011.04.010. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2011.04.010/

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