Characterization of a transmission positron/positronium converter for antihydrogen production
- Creators
- 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.
- Gerber S.
- Giammarchi M.
- Gligorova A.
- Guatieri F.
- Haider S.
- Hinterberger A.
- Holmestad H.
- Kellerbauer A.
- Krasnicky D.
- Lagomarsino V.
- Lansonneur P.
- Lebrun P.
- Malbrunot C.
- Mariazzi S.
- Matveev V.
- Mazzotta Z.
- Muller S. R.
- Nebbia G.
- Nedelec P.
- Oberthaler M.
- Pacifico N.
- Pagano D.
- Penasa L.
- Petracek V.
- Povolo L.
- Prelz F.
- Prevedelli M.
- Ravelli L.
- Resch L.
- Rienacker B.
- Robert J.
- Rohne O. M.
- Rotondi A.
- Sacerdoti M.
- Sandaker H.
- Santoro R.
- Scampoli P.
- Simon M.
- Smestad L.
- Sorrentino F.
- Testera G.
- Tietje I. C.
- Widmann E.
- Yzombard P.
- Zimmer C.
- Zmeskal J.
- Zurlo N.
- Andersen S. L.
- Chevallier J.
- Uggerhoj U. I.
- Lyckegaard F.
- Others:
- 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.
- Gerber, S.
- Giammarchi, M.
- Gligorova, A.
- Guatieri, F.
- Haider, S.
- Hinterberger, A.
- Holmestad, H.
- Kellerbauer, A.
- Krasnicky, D.
- Lagomarsino, V.
- Lansonneur, P.
- Lebrun, P.
- Malbrunot, C.
- Mariazzi, S.
- Matveev, V.
- Mazzotta, Z.
- Muller, S. R.
- Nebbia, G.
- Nedelec, P.
- Oberthaler, M.
- Pacifico, N.
- Pagano, D.
- Penasa, L.
- Petracek, V.
- Povolo, L.
- Prelz, F.
- Prevedelli, M.
- Ravelli, L.
- Resch, L.
- Rienacker, B.
- Robert, J.
- Rohne, O. M.
- Rotondi, A.
- Sacerdoti, M.
- Sandaker, H.
- Santoro, R.
- Scampoli, P.
- Simon, M.
- Smestad, L.
- Sorrentino, F.
- Testera, G.
- Tietje, I. C.
- Widmann, E.
- Yzombard, P.
- Zimmer, C.
- Zmeskal, J.
- Zurlo, N.
- Andersen, S. L.
- Chevallier, J.
- Uggerhoj, U. I.
- Lyckegaard, F.
Description
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.
Additional details
- URL
- http://hdl.handle.net/11567/960203
- URN
- urn:oai:iris.unige.it:11567/960203
- Origin repository
- UNIGE