This volume is a collection of the contributions to the 6th Annual Workshop on Polarized Positron in China. It provides an important updated to couple Linear Collider (ILC+CLIC) aimed polarized positron source R&D efforts to more general polarized positron related community with the aim of advancing polarized positron studies through exchanges and collaborations.

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