Polarized Positron 2011

This volume is a collection of the contributions to the 6th Annual Workshop on Polarized Positron held in China. It provides updated information on polarized positron source R&D efforts for future high energy linear colliders and other research activities related to the polarized positron studies.

The topics covered include: positron beams for linear colliders, but not limited to it, with the main items listed below:

• Polarized gamma ray generation
• High degree polarized positron generation from Compton scattering both ring and linac based
• High degree polarized positron generation from undulator radiation
• Stacking and accumulation of the polarized beam from Compton regime
• Polarized beam transport, control and acceleration
• Channelling radiation and applications
• Physics applications of polarized positrons
• Various high intensity positron sources (include conventional)
• For other future colliders (SuperB, for example)
• Positron generation target issues
• Physics applications of high quality X-rays and gamma-rays
• Polarimetry at the e+ source
• The positron capture section and the photon collimation
• Review the activities of the “ILC–CLIC e+ generation” working group for all schemes
• Status of the CDR for CLIC and TDR for ILC
• Polarized electron sources

Contents:

• Physics Applications of Polarized Positrons (S Riemann)
• Positron Source for International Linear Collider (Wei Gai and Wanming Liu)
• On the Parameters of International Linear Collider Positron Source (Waming Liu, Wei Gai, Sabine Riemann and Andriy Ushakov)
• Polarized Positrons for the ILC — Update on Simulations (A Ushakov, O S Adeyemi, G Moortgat-Pick, F Staufenbiel and S Riemann)
• Why K-Factor in ILC Undulator Should Be Small (Alexander A Mikhailichenko)
• Status of Prototyping of the ILC Positron Target (J Gronberg, Craig Brooksby, Tom Piggott, Ryan Abbott, Jay Javedani and Ed Cook)
• Heat Load and Stress Studies for an Design of the Photon Collimator for the ILC Positron Source (F Staufenbiel, S Riemann, O S Adeyemi, V Kovalenko, L Malysheva, A Ushakov and G Moortgat-Pick)
• Lithium Lens for ILC (Alexander A Mikhailichenko)
• Spin Tracking at the ILC Positron Source (V Kovalenko, O S Adeyemi, A Hartin, G A Moortgat-Pick, L Malysheva, S Riemann, F Staufenbiel and A Ushakov)
• The Truly Conventional Positron Source for ILC (Tsunehiko Omori, Junji Urakawa, Tohru Takahashi, Shin-Ichi Kawada, Sabine Riemann, Wei Gai, Wanming Liu, Jie Gao, Guoxi Pei, Natsuki Okuda and Andriy Ushakov)
• Multi Bunch Gamma Ray Generation Experiment at ATF (Tohru Takahashi)
• Positron Source Using Channeling with a Granular Converter (P Sievers, C Xu, R Chehab, X Artru, M Chevallier, O Dadoun, G Pei, V M Strakhovenko and A Variola)
• Compton e+ Source Overview (RING + ERL + LINAC) (Junji Urakawa)
• Compton Ring with Laser Radiative Cooling (E Bulyak, J Urakawa and F Zimmermann)
• BEPCII Positron Source (Pei Guoxi, Sun Yaolin, Liu Jintong, Chi Yunlong, Liu Yuncheng and Liu Nianzong)
• Research of Compact X-Ray Source based on Thomson Scattering at Tsinghua University (Yingchao Du, Lixin Yan, Jianfei Hua, Qiang Du, Houjun Qian, Chen Li, Haisheng Xu, Wenhui Huang, Huaibi Chen and Chuanxiang Tang)