title: Proposal of a high-field superconducting wiggler for a slow positron source at SPring-8.
abstract: 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.
authors.affiliation: SPring-8, Kamigori, Hyogo 678-12, Japan, and Laboratory of Advanced Science and Technology for Industry, Himeji Institute of Technology, 2167 Shosha, Himeji, Hyogo 671-22, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Ando
authors.forename: S
authors.initials: S
authors.lastname: Daté
authors.forename: M G
authors.initials: MG
authors.lastname: Fedurin
authors.forename: M
authors.initials: M
authors.lastname: Hara
authors.forename: H
authors.initials: H
authors.lastname: Kamitsubo
authors.forename: A V
authors.initials: AV
authors.lastname: Kiselev
authors.forename: G N
authors.initials: GN
authors.lastname: Kulipanov
authors.forename: N
authors.initials: N
authors.lastname: Kumagai
authors.forename: N A
authors.initials: NA
authors.lastname: Mezentsev
authors.forename: Y
authors.initials: Y
authors.lastname: Miyahara
authors.forename: T
authors.initials: T
authors.lastname: Nakamura
authors.forename: H
authors.initials: H
authors.lastname: Ohkuma
authors.forename: V A
authors.initials: VA
authors.lastname: Shkaruba
authors.forename: A N
authors.initials: AN
authors.lastname: Skrinsky
authors.forename: K
authors.initials: K
authors.lastname: Soutome
authors.forename: M
authors.initials: M
authors.lastname: Takao
authors.forename: H
authors.initials: H
authors.lastname: Tanaka