Proposal to measure the Gravitational Behaviour of Antihydrogen at Rest

We propose an experiment to measure the free fall acceleration of neutral antihydrogen atoms in order to test the Weak Equivalence Principle. The originality of this path is to first produce the antihydrogen ion Hbar+ (or anti H-). The ion is formed through two charge exchange processes involving th...

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Detalles Bibliográficos
Autores principales: Chardin, G, Grandemange, P, Lunney, D, Manea, V, Badertscher, A, Crivelli, P, Curioni, A, Marchionni, A, Rossi, B, Rubbia, A, Nesvizhevsky, V, Hervieux, P-A, Manfredi, G, Comini, P, Debu, P, Dupré, P, Liszkay, L, Mansoulié, B, Pérez, P, Rey, J-M, Ruiz, N, Sacquin, Y, Voronin, A, Biraben, F, Cladé, P, Douillet, A, Gérardin, A, Guellati, S, Hilico, L, Indelicato, P, Lambrecht, A, Guérout, R, Karr, J-P, Nez, F, Reynaud, S, Tran, V-Q, Mohri, A, Yamazaki, Y, Charlton, M, Eriksson, S, Madsen, N, van der Werf, D-P, Kuroda, N, Torii, H, Nagashima, Y
Publicado: 2011
Materias:
Detectors and Experimental Techniques
Acceso en línea:http://cds.cern.ch/record/1386684
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author Chardin, G
Grandemange, P
Lunney, D
Manea, V
Badertscher, A
Crivelli, P
Curioni, A
Marchionni, A
Rossi, B
Rubbia, A
Nesvizhevsky, V
Hervieux, P-A
Manfredi, G
Comini, P
Debu, P
Dupré, P
Liszkay, L
Mansoulié, B
Pérez, P
Rey, J-M
Ruiz, N
Sacquin, Y
Voronin, A
Biraben, F
Cladé, P
Douillet, A
Gérardin, A
Guellati, S
Hilico, L
Indelicato, P
Lambrecht, A
Guérout, R
Karr, J-P
Nez, F
Reynaud, S
Tran, V-Q
Mohri, A
Yamazaki, Y
Charlton, M
Eriksson, S
Madsen, N
van der Werf, D-P
Kuroda, N
Torii, H
Nagashima, Y
author_facet Chardin, G
Grandemange, P
Lunney, D
Manea, V
Badertscher, A
Crivelli, P
Curioni, A
Marchionni, A
Rossi, B
Rubbia, A
Nesvizhevsky, V
Hervieux, P-A
Manfredi, G
Comini, P
Debu, P
Dupré, P
Liszkay, L
Mansoulié, B
Pérez, P
Rey, J-M
Ruiz, N
Sacquin, Y
Voronin, A
Biraben, F
Cladé, P
Douillet, A
Gérardin, A
Guellati, S
Hilico, L
Indelicato, P
Lambrecht, A
Guérout, R
Karr, J-P
Nez, F
Reynaud, S
Tran, V-Q
Mohri, A
Yamazaki, Y
Charlton, M
Eriksson, S
Madsen, N
van der Werf, D-P
Kuroda, N
Torii, H
Nagashima, Y
author_sort Chardin, G
collection CERN
description We propose an experiment to measure the free fall acceleration of neutral antihydrogen atoms in order to test the Weak Equivalence Principle. The originality of this path is to first produce the antihydrogen ion Hbar+ (or anti H-). The ion is formed through two charge exchange processes involving the interaction of an antiproton with positronium to produce antihydrogen, followed by the interaction of this atom with positronium. The ion is then sympathetically cooled with laser cooled Be+ ions down to μK temperatures (i.e. m/s velocities). The excess positron can then be laser detached in order to recover the neutral antihydrogen atom. The laser pulse will give the start time for the antihydrogen free fall measurement. The stop will be determined by the detection of the charged pions coming from the annihilation of the antiprotons on a plate placed at a known distance from the initial position of the atoms. From the free fall time and distance one will can extract the value of g. Our goal is a measurement at the level of 1%.
id cern-1386684
institution Organización Europea para la Investigación Nuclear
publishDate 2011
record_format invenio
spelling cern-13866842021-09-24T14:48:03Zhttp://cds.cern.ch/record/1386684Chardin, GGrandemange, PLunney, DManea, VBadertscher, ACrivelli, PCurioni, AMarchionni, ARossi, BRubbia, ANesvizhevsky, VHervieux, P-AManfredi, GComini, PDebu, PDupré, PLiszkay, LMansoulié, BPérez, PRey, J-MRuiz, NSacquin, YVoronin, ABiraben, FCladé, PDouillet, AGérardin, AGuellati, SHilico, LIndelicato, PLambrecht, AGuérout, RKarr, J-PNez, FReynaud, STran, V-QMohri, AYamazaki, YCharlton, MEriksson, SMadsen, Nvan der Werf, D-PKuroda, NTorii, HNagashima, YProposal to measure the Gravitational Behaviour of Antihydrogen at RestDetectors and Experimental TechniquesWe propose an experiment to measure the free fall acceleration of neutral antihydrogen atoms in order to test the Weak Equivalence Principle. The originality of this path is to first produce the antihydrogen ion Hbar+ (or anti H-). The ion is formed through two charge exchange processes involving the interaction of an antiproton with positronium to produce antihydrogen, followed by the interaction of this atom with positronium. The ion is then sympathetically cooled with laser cooled Be+ ions down to μK temperatures (i.e. m/s velocities). The excess positron can then be laser detached in order to recover the neutral antihydrogen atom. The laser pulse will give the start time for the antihydrogen free fall measurement. The stop will be determined by the detection of the charged pions coming from the annihilation of the antiprotons on a plate placed at a known distance from the initial position of the atoms. From the free fall time and distance one will can extract the value of g. Our goal is a measurement at the level of 1%.CERN-SPSC-2011-029SPSC-P-342oai:cds.cern.ch:13866842011-09-30
spellingShingle Detectors and Experimental Techniques
Chardin, G
Grandemange, P
Lunney, D
Manea, V
Badertscher, A
Crivelli, P
Curioni, A
Marchionni, A
Rossi, B
Rubbia, A
Nesvizhevsky, V
Hervieux, P-A
Manfredi, G
Comini, P
Debu, P
Dupré, P
Liszkay, L
Mansoulié, B
Pérez, P
Rey, J-M
Ruiz, N
Sacquin, Y
Voronin, A
Biraben, F
Cladé, P
Douillet, A
Gérardin, A
Guellati, S
Hilico, L
Indelicato, P
Lambrecht, A
Guérout, R
Karr, J-P
Nez, F
Reynaud, S
Tran, V-Q
Mohri, A
Yamazaki, Y
Charlton, M
Eriksson, S
Madsen, N
van der Werf, D-P
Kuroda, N
Torii, H
Nagashima, Y
Proposal to measure the Gravitational Behaviour of Antihydrogen at Rest
title Proposal to measure the Gravitational Behaviour of Antihydrogen at Rest
title_full Proposal to measure the Gravitational Behaviour of Antihydrogen at Rest
title_fullStr Proposal to measure the Gravitational Behaviour of Antihydrogen at Rest
title_full_unstemmed Proposal to measure the Gravitational Behaviour of Antihydrogen at Rest
title_short Proposal to measure the Gravitational Behaviour of Antihydrogen at Rest
title_sort proposal to measure the gravitational behaviour of antihydrogen at rest
topic Detectors and Experimental Techniques
url http://cds.cern.ch/record/1386684
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