文章基本信息

标题：A. Shibata
本地全文：下载
作者：A. Shibata
期刊名称：PoS - Proceedings of Science
印刷版ISSN：1824-8039
出版年度：2007
出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We propose a inference method to determine the luminosity spectrum precisely in a future high luminosity electron positron linear collider. We introduce a statistical method recently developed in the information technology. In the ordinal electron positron collides, colliding beam energy is tuned with monocromatic energy, and luminosity can be measured by just counting the number of Bhabha events. However, the high luminosity e+e− linear collider no more produces a monochromatic energy spectrum, but a continuous and rather broad energy spectrum due to the beamstrahlung. A precise knowledge of this energy spectrum alias the luminosity spectrum, the precision experiment in the linear collider should be confronted with a crucial problem. The proposed model is formulated as a mostly exact luminosity distribution function, and parameter fitting is carried out for the data generated by simulation. This shows that the beam parameters of colliding electrons and positrons can be determined with an uncertainty of several percents by using 10k Bhabha events in an ideal detector condition, by which the luminosity spectrum is described.