In this work we describe a high-resolution position-sensitive detector for positronium. The detection scheme is based on the photoionization of positronium in a magnetic field and the imaging of the freed positrons with a Microchannel Plate assembly. A spatial resolution of (88 +/- 5) mu m on the position of the ionized positronium -in the plane perpendicular to a 1.0 T magnetic field- is obtained. The possibility to apply the detection scheme for monitoring the emission into vacuum of positronium from positron/positronium converters, imaging positronium excited to a selected state and characterizing its spatial distribution is discussed. Ways to further improve the spatial resolution of the method are presented.

A ∼100 μm-resolution position-sensitive detector for slow positronium / Amsler, C., Antonello, M., Belov, A., Bonomi, G., Brusa, R.S., Caccia, M., Camper, A., Caravita, R., Castelli, F., Cerchiari, G., Comparat, D., Consolati, G., Demetrio, A., Di Noto, L., Doser, M., Fani, M., Ferragut, R., Fesel, J., Gerber, S., Giammarchi, M., et al.. - In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION B, BEAM INTERACTIONS WITH MATERIALS AND ATOMS. - ISSN 0168-583X. - 457:(2019), pp. 44-48. [10.1016/j.nimb.2019.07.015]

A ∼100 μm-resolution position-sensitive detector for slow positronium

Brusa R. S.;Guatieri F.;Mariazzi S.;Penasa L.;
2019-01-01

Abstract

In this work we describe a high-resolution position-sensitive detector for positronium. The detection scheme is based on the photoionization of positronium in a magnetic field and the imaging of the freed positrons with a Microchannel Plate assembly. A spatial resolution of (88 +/- 5) mu m on the position of the ionized positronium -in the plane perpendicular to a 1.0 T magnetic field- is obtained. The possibility to apply the detection scheme for monitoring the emission into vacuum of positronium from positron/positronium converters, imaging positronium excited to a selected state and characterizing its spatial distribution is discussed. Ways to further improve the spatial resolution of the method are presented.
2019
Amsler, C.; Antonello, M.; Belov, A.; Bonomi, G.; Brusa, R. S.; Caccia, M.; Camper, A.; Caravita, R.; Castelli, F.; Cerchiari, G.; Comparat, D.; Conso...espandi
A ∼100 μm-resolution position-sensitive detector for slow positronium / Amsler, C., Antonello, M., Belov, A., Bonomi, G., Brusa, R.S., Caccia, M., Camper, A., Caravita, R., Castelli, F., Cerchiari, G., Comparat, D., Consolati, G., Demetrio, A., Di Noto, L., Doser, M., Fani, M., Ferragut, R., Fesel, J., Gerber, S., Giammarchi, M., et al.. - In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION B, BEAM INTERACTIONS WITH MATERIALS AND ATOMS. - ISSN 0168-583X. - 457:(2019), pp. 44-48. [10.1016/j.nimb.2019.07.015]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/246205
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