Characterization of a transmission positron/positronium converter for antihydrogen production

S. Aghion; C. Amsler; T. Ariga; G. Bonomi; R. S. Brusa; M. Caccia; R. Caravita; F. Castelli; G. Cerchiari; D. Comparat; G. Consolati; A. Demetrio; L. Di Noto; M. Doser; A. Ereditato; C. Evans; R. Ferragut; J. Fesel; A. Fontana; S. Gerber; M. Giammarchi; A. Gligorova; F. Guatieri; S. Haider; A. Hinterberger; H. Holmestad; A. Kellerbauer; D. Krasnický; V. Lagomarsino; P. Lansonneur; P. Lebrun; C. Malbrunot; S. Mariazzi; V. Matveev; Z. Mazzotta; S. R. Müller; G. Nebbia; P. Nedelec; M. Oberthaler; N. Pacifico; D. Pagano; L. Penasa; V. Petracek; L. Povolo; F. Prelz; M. Prevedelli; L. Ravelli; L. Resch; B. Rienäcker; J. Robert; O. M. Røhne; A. Rotondi; M. Sacerdoti; H. Sandaker; R. Santoro; P. Scampoli; M. Simon; L. Smestad; F. Sorrentino; G. Testera; I. C. Tietje; E. Widmann; P. Yzombard; C. Zimmer; J. Zmeskal; N. Zurlo; S. L. Andersen; J. Chevallier; U. I. Uggerhøj; F. Lyckegaard

doi:10.1016/j.nimb.2017.05.059

Characterization of a transmission positron/positronium converter for antihydrogen production

S. Aghion, C. Amsler, T. Ariga, G. Bonomi, R. S. Brusa, M. Caccia, R. Caravita, F. Castelli, G. Cerchiari, D. Comparat, G. Consolati, A. Demetrio, L. Di Noto, M. Doser, A. Ereditato, C. Evans, R. Ferragut, J. Fesel, A. Fontana, S. GerberM. Giammarchi, A. Gligorova, F. Guatieri, S. Haider, A. Hinterberger, H. Holmestad, A. Kellerbauer, D. Krasnický, V. Lagomarsino, P. Lansonneur, P. Lebrun, C. Malbrunot, S. Mariazzi, V. Matveev, Z. Mazzotta, S. R. Müller, G. Nebbia, P. Nedelec, M. Oberthaler, N. Pacifico, D. Pagano, L. Penasa, V. Petracek, L. Povolo, F. Prelz, M. Prevedelli, L. Ravelli, L. Resch, B. Rienäcker, J. Robert, O. M. Røhne, A. Rotondi, M. Sacerdoti, H. Sandaker, R. Santoro, P. Scampoli, M. Simon, L. Smestad, F. Sorrentino, G. Testera, I. C. Tietje, E. Widmann, P. Yzombard, C. Zimmer, J. Zmeskal, N. Zurlo, S. L. Andersen, J. Chevallier, U. I. Uggerhøj, F. Lyckegaard

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Abstract

In this work a characterization study of forward emission from a thin, meso-structured silica positron/positronium (Ps) converter following implantation of positrons in light of possible antihydrogen production is presented. The target consisted of a ∼1 μm thick ultraporous silica film e-gun evaporated onto a 20 nm carbon foil. The Ps formation and emission was studied via Single Shot Positron Annihilation Lifetime Spectroscopy measurements after implantation of pulses with 3-4·10⁷ positrons and 10 ns temporal width. The forward emission of implanted positrons and secondary electrons was investigated with a micro-channel plate – phosphor screen assembly, connected either to a CCD camera for imaging of the impinging particles, or to a fast photomultiplier tube to extract information about their time of flight. The maximum Ps formation fraction was estimated to be ∼10%. At least 10% of the positrons implanted with an energy of 3.3 keV are forward-emitted with a scattering angle smaller than 50° and maximum kinetic energy of 1.2 keV. At least 0.1–0.2 secondary electrons per implanted positron were also found to be forward-emitted with a kinetic energy of a few eV. The possible application of this kind of positron/positronium converter for antihydrogen production is discussed.

Original language	English
Pages (from-to)	55-66
Number of pages	12
Journal	Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume	407
DOIs	https://doi.org/10.1016/j.nimb.2017.05.059
Publication status	Published - Sept 15 2017
Externally published	Yes

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Instrumentation

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10.1016/j.nimb.2017.05.059

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Aghion, S., Amsler, C., Ariga, T., Bonomi, G., Brusa, R. S., Caccia, M., Caravita, R., Castelli, F., Cerchiari, G., Comparat, D., Consolati, G., Demetrio, A., Di Noto, L., Doser, M., Ereditato, A., Evans, C., Ferragut, R., Fesel, J., Fontana, A., ... Lyckegaard, F. (2017). Characterization of a transmission positron/positronium converter for antihydrogen production. Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, 407, 55-66. https://doi.org/10.1016/j.nimb.2017.05.059

Aghion, S, Amsler, C, Ariga, T, Bonomi, G, Brusa, RS, Caccia, M, Caravita, R, Castelli, F, Cerchiari, G, Comparat, D, Consolati, G, Demetrio, A, Di Noto, L, Doser, M, Ereditato, A, Evans, C, Ferragut, R, Fesel, J, Fontana, A, Gerber, S, Giammarchi, M, Gligorova, A, Guatieri, F, Haider, S, Hinterberger, A, Holmestad, H, Kellerbauer, A, Krasnický, D, Lagomarsino, V, Lansonneur, P, Lebrun, P, Malbrunot, C, Mariazzi, S, Matveev, V, Mazzotta, Z, Müller, SR, Nebbia, G, Nedelec, P, Oberthaler, M, Pacifico, N, Pagano, D, Penasa, L, Petracek, V, Povolo, L, Prelz, F, Prevedelli, M, Ravelli, L, Resch, L, Rienäcker, B, Robert, J, Røhne, OM, Rotondi, A, Sacerdoti, M, Sandaker, H, Santoro, R, Scampoli, P, Simon, M, Smestad, L, Sorrentino, F, Testera, G, Tietje, IC, Widmann, E, Yzombard, P, Zimmer, C, Zmeskal, J, Zurlo, N, Andersen, SL, Chevallier, J, Uggerhøj, UI & Lyckegaard, F 2017, 'Characterization of a transmission positron/positronium converter for antihydrogen production', Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, vol. 407, pp. 55-66. https://doi.org/10.1016/j.nimb.2017.05.059

@article{4f25409ee6bf4048b1d8d41b486b2c46,

title = "Characterization of a transmission positron/positronium converter for antihydrogen production",

abstract = "In this work a characterization study of forward emission from a thin, meso-structured silica positron/positronium (Ps) converter following implantation of positrons in light of possible antihydrogen production is presented. The target consisted of a ∼1 μm thick ultraporous silica film e-gun evaporated onto a 20 nm carbon foil. The Ps formation and emission was studied via Single Shot Positron Annihilation Lifetime Spectroscopy measurements after implantation of pulses with 3-4·107 positrons and 10 ns temporal width. The forward emission of implanted positrons and secondary electrons was investigated with a micro-channel plate – phosphor screen assembly, connected either to a CCD camera for imaging of the impinging particles, or to a fast photomultiplier tube to extract information about their time of flight. The maximum Ps formation fraction was estimated to be ∼10%. At least 10% of the positrons implanted with an energy of 3.3 keV are forward-emitted with a scattering angle smaller than 50° and maximum kinetic energy of 1.2 keV. At least 0.1–0.2 secondary electrons per implanted positron were also found to be forward-emitted with a kinetic energy of a few eV. The possible application of this kind of positron/positronium converter for antihydrogen production is discussed.",

author = "S. Aghion and C. Amsler and T. Ariga and G. Bonomi and Brusa, {R. S.} and M. Caccia and R. Caravita and F. Castelli and G. Cerchiari and D. Comparat and G. Consolati and A. Demetrio and {Di Noto}, L. and M. Doser and A. Ereditato and C. Evans and R. Ferragut and J. Fesel and A. Fontana and S. Gerber and M. Giammarchi and A. Gligorova and F. Guatieri and S. Haider and A. Hinterberger and H. Holmestad and A. Kellerbauer and D. Krasnick{\'y} and V. Lagomarsino and P. Lansonneur and P. Lebrun and C. Malbrunot and S. Mariazzi and V. Matveev and Z. Mazzotta and M{\"u}ller, {S. R.} and G. Nebbia and P. Nedelec and M. Oberthaler and N. Pacifico and D. Pagano and L. Penasa and V. Petracek and L. Povolo and F. Prelz and M. Prevedelli and L. Ravelli and L. Resch and B. Rien{\"a}cker and J. Robert and R{\o}hne, {O. M.} and A. Rotondi and M. Sacerdoti and H. Sandaker and R. Santoro and P. Scampoli and M. Simon and L. Smestad and F. Sorrentino and G. Testera and Tietje, {I. C.} and E. Widmann and P. Yzombard and C. Zimmer and J. Zmeskal and N. Zurlo and Andersen, {S. L.} and J. Chevallier and Uggerh{\o}j, {U. I.} and F. Lyckegaard",

note = "Funding Information: This work was supported by the Swiss National Science Foundation Ambizione Grant (No. 154833); Istituto Nazionale di Fisica Nucleare; a Deutsche Forschungsgemeinschaft research grant; an excellence initiative of Heidelberg University; European Research Council under the European Union's Seventh Framework Program FP7/2007-2013 (Grants Nos. 291242 and 277762); Austrian Ministry for Science, Research, and Economy; Research Council of Norway; Bergen Research Foundation; John Templeton Foundation; Ministry of Education and Science of the Russian Federation and Russian Academy of Sciences; and the European Social Fund within the framework of realizing the project, in support of intersectoral mobility and quality enhancement of research teams at Czech Technical University in Prague (Grant No. CZ.1.07/2.3.00/30.0034). Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2017",

month = sep,

day = "15",

doi = "10.1016/j.nimb.2017.05.059",

language = "English",

volume = "407",

pages = "55--66",

journal = "Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms",

issn = "0168-583X",

publisher = "Elsevier",

}

TY - JOUR

T1 - Characterization of a transmission positron/positronium converter for antihydrogen production

AU - Aghion, S.

AU - Amsler, C.

AU - Ariga, T.

AU - Bonomi, G.

AU - Brusa, R. S.

AU - Caccia, M.

AU - Caravita, R.

AU - Castelli, F.

AU - Cerchiari, G.

AU - Comparat, D.

AU - Consolati, G.

AU - Demetrio, A.

AU - Di Noto, L.

AU - Doser, M.

AU - Ereditato, A.

AU - Evans, C.

AU - Ferragut, R.

AU - Fesel, J.

AU - Fontana, A.

AU - Gerber, S.

AU - Giammarchi, M.

AU - Gligorova, A.

AU - Guatieri, F.

AU - Haider, S.

AU - Hinterberger, A.

AU - Holmestad, H.

AU - Kellerbauer, A.

AU - Krasnický, D.

AU - Lagomarsino, V.

AU - Lansonneur, P.

AU - Lebrun, P.

AU - Malbrunot, C.

AU - Mariazzi, S.

AU - Matveev, V.

AU - Mazzotta, Z.

AU - Müller, S. R.

AU - Nebbia, G.

AU - Nedelec, P.

AU - Oberthaler, M.

AU - Pacifico, N.

AU - Pagano, D.

AU - Penasa, L.

AU - Petracek, V.

AU - Povolo, L.

AU - Prelz, F.

AU - Prevedelli, M.

AU - Ravelli, L.

AU - Resch, L.

AU - Rienäcker, B.

AU - Robert, J.

AU - Røhne, O. M.

AU - Rotondi, A.

AU - Sacerdoti, M.

AU - Sandaker, H.

AU - Santoro, R.

AU - Scampoli, P.

AU - Simon, M.

AU - Smestad, L.

AU - Sorrentino, F.

AU - Testera, G.

AU - Tietje, I. C.

AU - Widmann, E.

AU - Yzombard, P.

AU - Zimmer, C.

AU - Zmeskal, J.

AU - Zurlo, N.

AU - Andersen, S. L.

AU - Chevallier, J.

AU - Uggerhøj, U. I.

AU - Lyckegaard, F.

N1 - Funding Information: This work was supported by the Swiss National Science Foundation Ambizione Grant (No. 154833); Istituto Nazionale di Fisica Nucleare; a Deutsche Forschungsgemeinschaft research grant; an excellence initiative of Heidelberg University; European Research Council under the European Union's Seventh Framework Program FP7/2007-2013 (Grants Nos. 291242 and 277762); Austrian Ministry for Science, Research, and Economy; Research Council of Norway; Bergen Research Foundation; John Templeton Foundation; Ministry of Education and Science of the Russian Federation and Russian Academy of Sciences; and the European Social Fund within the framework of realizing the project, in support of intersectoral mobility and quality enhancement of research teams at Czech Technical University in Prague (Grant No. CZ.1.07/2.3.00/30.0034). Publisher Copyright: © 2017 Elsevier B.V.

PY - 2017/9/15

Y1 - 2017/9/15

N2 - In this work a characterization study of forward emission from a thin, meso-structured silica positron/positronium (Ps) converter following implantation of positrons in light of possible antihydrogen production is presented. The target consisted of a ∼1 μm thick ultraporous silica film e-gun evaporated onto a 20 nm carbon foil. The Ps formation and emission was studied via Single Shot Positron Annihilation Lifetime Spectroscopy measurements after implantation of pulses with 3-4·107 positrons and 10 ns temporal width. The forward emission of implanted positrons and secondary electrons was investigated with a micro-channel plate – phosphor screen assembly, connected either to a CCD camera for imaging of the impinging particles, or to a fast photomultiplier tube to extract information about their time of flight. The maximum Ps formation fraction was estimated to be ∼10%. At least 10% of the positrons implanted with an energy of 3.3 keV are forward-emitted with a scattering angle smaller than 50° and maximum kinetic energy of 1.2 keV. At least 0.1–0.2 secondary electrons per implanted positron were also found to be forward-emitted with a kinetic energy of a few eV. The possible application of this kind of positron/positronium converter for antihydrogen production is discussed.

AB - In this work a characterization study of forward emission from a thin, meso-structured silica positron/positronium (Ps) converter following implantation of positrons in light of possible antihydrogen production is presented. The target consisted of a ∼1 μm thick ultraporous silica film e-gun evaporated onto a 20 nm carbon foil. The Ps formation and emission was studied via Single Shot Positron Annihilation Lifetime Spectroscopy measurements after implantation of pulses with 3-4·107 positrons and 10 ns temporal width. The forward emission of implanted positrons and secondary electrons was investigated with a micro-channel plate – phosphor screen assembly, connected either to a CCD camera for imaging of the impinging particles, or to a fast photomultiplier tube to extract information about their time of flight. The maximum Ps formation fraction was estimated to be ∼10%. At least 10% of the positrons implanted with an energy of 3.3 keV are forward-emitted with a scattering angle smaller than 50° and maximum kinetic energy of 1.2 keV. At least 0.1–0.2 secondary electrons per implanted positron were also found to be forward-emitted with a kinetic energy of a few eV. The possible application of this kind of positron/positronium converter for antihydrogen production is discussed.

UR - http://www.scopus.com/inward/record.url?scp=85020164743&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85020164743&partnerID=8YFLogxK

U2 - 10.1016/j.nimb.2017.05.059

DO - 10.1016/j.nimb.2017.05.059

M3 - Article

AN - SCOPUS:85020164743

SN - 0168-583X

VL - 407

SP - 55

EP - 66

JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

ER -

Characterization of a transmission positron/positronium converter for antihydrogen production

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