Annihilation of low energy antiprotons in silicon

S. Aghion; O. Ahlén; A. S. Belov; G. Bonomi; P. Bräunig; J. Bremer; R. S. Brusa; G. Burghart; L. Cabaret; M. Caccia; C. Canali; R. Caravita; F. Castelli; G. Cerchiari; S. Cialdi; D. Comparat; G. Consolati; J. H. Derking; S. Di Domizio; L. Di Noto; M. Doser; A. Dudarev; R. Ferragut; A. Fontana; P. Genova; M. Giammarchi; A. Gligorova; S. N. Gninenko; S. Haider; J. Harasimowicz; T. Huse; E. Jordan; L. V. Jørgensen; T. Kaltenbacher; A. Kellerbauer; A. Knecht; D. Krasnický; V. Lagomarsino; A. Magnani; S. Mariazzi; V. A. Matveev; F. Moia; G. Nebbia; P. Nédélec; N. Pacifico; V. Petrácek; F. Prelz; M. Prevedelli; C. Regenfus; C. Riccardi; O. Røhne; A. Rotondi; H. Sandaker; A. Sosa; M. A. Subieta Vasquez; M. Špacek; G. Testera; C. P. Welsch; S. Zavatarelli

Preprints, Working Papers, ... Year : 2013

Annihilation of low energy antiprotons in silicon

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S. Aghion

Function : Author

O. Ahlén

Function : Author

A. S. Belov

Function : Author

G. Bonomi

Function : Author

P. Bräunig

Function : Author

J. Bremer

Function : Author

R. S. Brusa

Function : Author

G. Burghart

Function : Author

L. Cabaret

Function : Author

Laboratoire Aimé Cotton

M. Caccia

Function : Author

C. Canali

Function : Author

R. Caravita

Function : Author

F. Castelli

Function : Author

G. Cerchiari

Function : Author

S. Cialdi

Function : Author

D. Comparat

Function : Author
PersonId : 182773
IdHAL : daniel-comparat
ORCID : 0000-0001-5884-2882
IdRef : 13374454X

Laboratoire Aimé Cotton

G. Consolati

Function : Author

J. H. Derking

Function : Author

S. Di Domizio

Function : Author

L. Di Noto

Function : Author

M. Doser

Function : Author

A. Dudarev

Function : Author

R. Ferragut

Function : Author

A. Fontana

Function : Author
PersonId : 755590
ORCID : 0000-0003-3820-2823

P. Genova

Function : Author

M. Giammarchi

Function : Author

A. Gligorova

Function : Author

S. N. Gninenko

Function : Author

S. Haider

Function : Author

J. Harasimowicz

Function : Author

T. Huse

Function : Author

E. Jordan

Function : Author

L. V. Jørgensen

Function : Author

T. Kaltenbacher

Function : Author

A. Kellerbauer

Function : Author

A. Knecht

Function : Author

D. Krasnický

Function : Author

V. Lagomarsino

Function : Author

A. Magnani

Function : Author

S. Mariazzi

Function : Author

V. A. Matveev

Function : Author

F. Moia

Function : Author

G. Nebbia

Function : Author

P. Nédélec

Function : Author

Institut de Physique Nucléaire de Lyon

N. Pacifico

Function : Author

V. Petrácek

Function : Author

F. Prelz

Function : Author
PersonId : 755325
ORCID : 0000-0003-1344-2716

M. Prevedelli

Function : Author
PersonId : 759807
ORCID : 0000-0002-3136-2392
IdRef : 244397783

C. Regenfus

Function : Author

C. Riccardi

Function : Author

O. Røhne

Function : Author

A. Rotondi

Function : Author

H. Sandaker

Function : Author

A. Sosa

Function : Author

M. A. Subieta Vasquez

Function : Author

M. Špacek

Function : Author

G. Testera

Function : Author

C. P. Welsch

Function : Author

S. Zavatarelli

Function : Author

Abstract

The goal of the AE$\mathrm{\bar{g}}$IS experiment at the Antiproton Decelerator (AD) at CERN, is to measure directly the Earth's gravitational acceleration on antimatter. To achieve this goal, the AE$\mathrm{\bar{g}}$IS collaboration will produce a pulsed, cold (100 mK) antihydrogen beam with a velocity of a few 100 m/s and measure the magnitude of the vertical deflection of the beam from a straight path. The final position of the falling antihydrogen will be detected by a position sensitive detector. This detector will consist of an active silicon part, where the annihilations take place, followed by an emulsion part. Together, they allow to achieve 1$%$ precision on the measurement of $\bar{g}$ with about 600 reconstructed and time tagged annihilations. We present here, to the best of our knowledge, the first direct measurement of antiproton annihilation in a segmented silicon sensor, the first step towards designing a position sensitive silicon detector for the AE$\mathrm{\bar{g}}$IS experiment. We also present a first comparison with Monte Carlo simulations (GEANT4) for antiproton energies below 5 MeV

Domains

Instrumentation and Detectors [physics.ins-det]

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https://hal.in2p3.fr/in2p3-00999409

Submitted on : Tuesday, June 3, 2014-3:19:19 PM

Last modification on : Friday, June 2, 2023-3:36:25 PM

Dates and versions

in2p3-00999409 , version 1 (03-06-2014)

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HAL Id : in2p3-00999409 , version 1
ARXIV : 1311.4982

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S. Aghion, O. Ahlén, A. S. Belov, G. Bonomi, P. Bräunig, et al.. Annihilation of low energy antiprotons in silicon. 2014. ⟨in2p3-00999409⟩

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Annihilation of low energy antiprotons in silicon

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