Proposal of a high-field superconducting wiggler for a slow positron source at SPring-8.

Autor: Ando A; 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., Daté S, Fedurin MG, Hara M, Kamitsubo H, Kiselev AV, Kulipanov GN, Kumagai N, Mezentsev NA, Miyahara Y, Nakamura T, Ohkuma H, Shkaruba VA, Skrinsky AN, Soutome K, Takao M, Tanaka H
Jazyk: angličtina
Zdroj: Journal of synchrotron radiation [J Synchrotron Radiat] 1998 May 01; Vol. 5 (Pt 3), pp. 360-2. Date of Electronic Publication: 1998 May 01.
DOI: 10.1107/S0909049597018773
Abstrakt: 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.
Databáze: MEDLINE