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Positron production using a 9 MeV electron linac for the GBAR experiment

Charlton, M. (author)
Choi, J. J. (author)
Chung, M. (author)
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Cladé, P. (author)
Comini, P. (author)
Crépin, P.-P. (author)
Crivelli, P. (author)
Dalkarov, O. (author)
Debu, P. (author)
Dodd, L. (author)
Douillet, A. (author)
Guellati-Khélifa, S. (author)
Hervieux, P.-A. (author)
Hilico, L. (author)
Husson, A. (author)
Indelicato, P. (author)
Janka, G. (author)
Jonsell, Svante (author)
Stockholms universitet,Fysikum
Karr, J.-P. (author)
Kim, B. H. (author)
Kim, E.-S. (author)
Kim, S. K. (author)
Ko, Y. (author)
Kosinski, T. (author)
Kuroda, N. (author)
Latacz, B. (author)
Lee, H. (author)
Lee, J. (author)
Leite, A. M. M. (author)
Lévêque, K. (author)
Lim, E. (author)
Liszkay, L. (author)
Lotrus, P. (author)
Louvradoux, T. (author)
Lunney, D. (author)
Manfredi, G. (author)
Mansoulié, B. (author)
Matusiak, M. (author)
Mornacchi, G. (author)
Nesvizhevsky, V. V. (author)
Nez, F. (author)
Niang, S. (author)
Nishi, R. (author)
Nourbaksh, S. (author)
Park, K. H. (author)
Paul, N. (author)
Pérez, P. (author)
Procureur, S. (author)
Radics, B. (author)
Regenfus, C. (author)
Rey, J.-M. (author)
Reymond, J.-M. (author)
Reynaud, S. (author)
Roussé, J.-Y. (author)
Rousselle, O. (author)
Rubbia, A. (author)
Rzadkiewicz, J. (author)
Sacquin, Y. (author)
Schmidt-Kaler, F. (author)
Staszczak, M. (author)
Tuchming, B. (author)
Vallage, B. (author)
Voronin, A. (author)
Welker, A. (author)
van der Werf, D. P. (author)
Wolf, S. (author)
Won, D. (author)
Wronka, S. (author)
Yamazaki, Y. (author)
Yoo, K.-H. (author)
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 (creator_code:org_t)
Elsevier BV, 2021
2021
English.
In: Nuclear Instruments and Methods in Physics Research Section A. - : Elsevier BV. - 0168-9002 .- 1872-9576. ; 985
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • For the GBAR (Gravitational Behaviour of Antihydrogen at Rest) experiment at CERN's Antiproton Decelerator (AD) facility we have constructed a source of slow positrons, which uses a low-energy electron linear accelerator (linac). The driver linac produces electrons of 9 MeV kinetic energy that create positrons from bremsstrahlung-induced pair production. Staying below 10 MeV ensures no persistent radioactive activation in the target zone and that the radiation level outside the biological shield is safe for public access. An annealed tungsten-mesh assembly placed directly behind the target acts as a positron moderator. The system produces 5 x 10(7) slow positrons per second, a performance demonstrating that a low-energy electron linac is a superior choice over positron-emitting radioactive sources for high positron flux.

Subject headings

NATURVETENSKAP  -- Fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences (hsv//eng)

Keyword

Positron
Linear accelerator
Antimatter
Antihydrogen
Gravitation

Publication and Content Type

ref (subject category)
art (subject category)

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