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Thomson scattering of coherent diffraction radiation by an electron bunch
1Tomsk Polytechic University, prospekt Lenina 2A, Tomsk 634050, Russia. pap@phtd.tpu.edu.ru
This study examines Thomson scattering of coherent diffraction radiation (CDR) from electron bunches. Scattered hard photon yield scales with the cube of electrons per bunch, enabling bunch length measurement.
Area of Science:
- Accelerator Physics
- Quantum Electrodynamics
- Particle Beam Diagnostics
Background:
- Coherent diffraction radiation (CDR) is generated by electron bunches in accelerators.
- Thomson scattering is a fundamental interaction between photons and charged particles.
Purpose of the Study:
- Investigate Thomson scattering of CDR from preceding electron bunches onto subsequent ones.
- Develop a method for measuring electron bunch length using scattered radiation.
Main Methods:
- Theoretical analysis of Thomson scattering geometry.
- Derivation of scattered photon spectrum considering bunch size.
- Modeling the relationship between photon yield and electron bunch parameters.
Main Results:
- Scattered hard photon yield is proportional to the cube of electrons per bunch (N(e)^3).
- The scattered photon spectrum explicitly depends on electron bunch dimensions.
- A novel technique for bunch length measurement is proposed.
Conclusions:
- Thomson scattering of CDR provides a sensitive probe of electron bunch properties.
- The proposed technique offers a non-invasive method for characterizing bunch length.
- This research contributes to advanced diagnostics in particle accelerators.
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