A new high-speed beam chopper for time-resolved X-ray studies.

Area of Science:

• X-ray Science
• Accelerator Physics
• Instrumentation

Background:

• The Advanced Photon Source (APS) generates high-intensity X-ray beams crucial for scientific research.
• Precise temporal control of X-ray pulses is essential for advanced experimental techniques.

Purpose of the Study:

• To develop and test a new high-speed X-ray beam chopper.
• To enable phase-locked operation with the APS storage ring's temporal structure.
• To allow flexible positioning of the storage ring's fill pattern within the chopper's open window.

Main Methods:

• Development of a high-speed X-ray beam chopper.
• Phase-locking the chopper's rotation to the APS storage ring's orbital frequency.
• Characterization of the chopper's open window time (2450 ns).

Main Results:

• Successful development and testing of the high-speed X-ray beam chopper.
• Achieved phase-locking capability with the APS storage ring.
• Demonstrated control over positioning the storage ring fill pattern within the transmission window.

Conclusions:

• The new X-ray beam chopper offers precise temporal control over X-ray delivery from the APS.
• This technology enhances experimental flexibility by allowing specific portions of the fill pattern to be accessed.
• The device is a valuable tool for advanced X-ray science applications.