Open AccessProposal of a high‐field superconducting wiggler for a slow positron source at SPring‐8
Author(s) -
Ando A.,
Daté S.,
Fedurin M. G.,
Hara M.,
Kamitsubo H.,
Kiselev A. V.,
Kulipanov G. N.,
Kumagai N.,
Mezentsev N. A.,
Miyahara Y.,
Nakamura T.,
Ohkuma H.,
Shkaruba V. A.,
Skrinsky A. N.,
Soutome K.,
Takao M.,
Tanaka H.
Publication year - 1998
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s0909049597018773
Subject(s) - wiggler , spring 8 , spring (device) , physics , positron , superconductivity , nuclear physics , field (mathematics) , condensed matter physics , optics , beam (structure) , electron , beamline , cathode ray , mathematics , pure mathematics , thermodynamics
A low‐energy positron beam is a unique probe of materials. In high‐energy electron and positron storage rings it is possible to generate intense synchrotron radiation with a photon energy of 1–3 MeV by installing a high‐field (8–10 T) superconducting wiggler. High‐energy photons are converted to low‐energy positrons by using a suitable target–moderator system. For an 8 GeV electron storage ring at a beam current of 100 mA, final yields are estimated to be about 10 8 –10 10 slow‐e + s −1 or larger depending on the moderation efficiency, with the size of the positron source 10 1 –10 2 cm 2 . In the present work a wiggler magnetic system of 10 T is proposed. The main parameters of the superconducting wiggler are presented.