7–11 Sept 2025
Teaching Hub 502
Europe/London timezone

Improved design of the emittancemeter for the c-band photoinjector at IHEP

TUPMO35
9 Sept 2025, 16:00
2h
Mountford Hall, Liverpool Guild of Students

Mountford Hall, Liverpool Guild of Students

Liverpool Guild of Students, University of Liverpool
Poster Presentation MC04: Transverse Profile and Emittance Monitors Tuesday Poster Session

Speaker

Biao Zhang (Institute of High Energy Physics, China Spallation Neutron Source)

Description

To enhance the performance of next-generation X-ray Free Electron Lasers (XFELs), it is crucial to produce high-quality electron beams with low emittance, particularly for attaining emittances below 0.2 mm.mrad for 100 pC bunch charges. This study introduces an emittance measurement method using an orthogonal dual-slit technique, aimed at enhancing measurement efficiency and achieving the necessary measurement accuracy for such small emittances. An emittance meter based on this method has been designed for a C-band photocathode RF gun at the CSNS campus. Finally, we present numerical simulations to optimize the primary parameters of the emittance meter, focusing on beam drift distance, combined with the motion accuracy of the stepper motor and the expected resolution of the optical observation system to ensure the accuracy of the emittance measurement.

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Author

Weiwen Chen (Institute of High Energy Physics, China Spallation Neutron Source)

Co-authors

Biao Zhang (Institute of High Energy Physics, China Spallation Neutron Source) Fang Li (Institute of High Energy Physics, China Spallation Neutron Source) Renjun Yang (Institute of High Energy Physics, China Spallation Neutron Source)

Presentation materials

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