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A positron source using an axially oriented crystal associated to a granular amorphous converter
Xu Chenghai1; Chehab Robert2; Sievers Peter3; Artru Xavier4; Chevallier Michel4; Dadoun Olivier5; Pei Guoxi1; Strakhovenko Vladimir M6; Variola Alessandro5
2012
Source PublicationChinese Physics. C
ISSN1674-1137
Volume36Issue:9Pages:871
AbstractA non-conventional positron source using the intense gamma radiation from an axially oriented monocrystal which materializes into e(+)e(-) pairs in a granular amorphous converter is described. The enhancement of photon radiation by multi-Gay electrons crossing a tungsten crystal along its axis is reported. The resulting enhancement of pair production in an amorphous converter placed 2 meters downstream, is also reported. Sweeping off the charged particles from the crystal by a bending magnet upstream of the converter allows a significant reduction of the deposited energy density. Substituting a granular target made of small spheres for the usual compact one, makes the energy dissipation easier. The deposited energy and corresponding heating are analyzed and solutions for cooling are proposed. The configurations studied here for this kind of positron source allow its consideration for unpolarized positrons for the ILC.
Language英语
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/98460
Collection中国科学院地理科学与资源研究所
Affiliation1.中国科学院高能物理研究所
2.Institut de Physique Nucleaire de Lyon,IN2P3/CNRS et Universite Lyon 1
3.中国科学院地理科学与资源研究所
4.Institut de Physique Nucleaire de Lyon
5.法国巴黎第十一大学
6.Budker Institute of Nuclear Physics
Recommended Citation
GB/T 7714
Xu Chenghai,Chehab Robert,Sievers Peter,et al. A positron source using an axially oriented crystal associated to a granular amorphous converter[J]. Chinese Physics. C,2012,36(9):871.
APA Xu Chenghai.,Chehab Robert.,Sievers Peter.,Artru Xavier.,Chevallier Michel.,...&Variola Alessandro.(2012).A positron source using an axially oriented crystal associated to a granular amorphous converter.Chinese Physics. C,36(9),871.
MLA Xu Chenghai,et al."A positron source using an axially oriented crystal associated to a granular amorphous converter".Chinese Physics. C 36.9(2012):871.
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