Pseudo-single-bunch with adjustable frequency: a new operation mode for synchrotron light sources.

Area of Science:

• Physics
• Accelerator Science
• Materials Science

Background:

• Synchrotron light sources are crucial for various scientific experiments.
• Current operational modes can limit the flexibility for specific experiments like time-of-flight and dynamics studies.
• Multibunch and single-bunch experiments often require separate scheduling, impacting overall efficiency.

Purpose of the Study:

• To introduce and validate a novel operational mode called pseudo-single-bunch (PSB) operation.
• To demonstrate how PSB can expand the capabilities of synchrotron light sources.
• To enable simultaneous execution of diverse experiments without compromising data quality or user access.

Main Methods:

• Implementing a kicker magnet to transversely displace a single electron bunch.
• Utilizing a collimator to block radiation from undesired bunches for specific experiments.
• Employing a "kick-and-cancel" scheme to precisely control the time spacing of PSB pulses.

Main Results:

• PSB operation successfully isolates a single bunch for specialized experiments.
• Minimal flux reduction observed at other beamlines, ensuring continued operation.
• Adjustable pulse spacing from milliseconds to microseconds achieved, simplifying experimental setups.
• Reduced reliance on high-power choppers and decreased sample damage rates.

Conclusions:

• Pseudo-single-bunch operation is a viable and effective new mode for synchrotron light sources.
• PSB significantly enhances experimental flexibility and efficiency for dynamics and time-of-flight studies.
• This innovation broadens the scientific applications and accessibility of synchrotron facilities.