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THz-driven non-relativistic to relativistic beams for electron diffraction


Cockcroft Institute

Manchester United Kingdom Experimental Physics Physics Particle Physics

About the Project

A studentship is available from October 2021 on the creation of MeV-scale electron beams using THz-beam interactions to create a beam suitable for electron diffraction. By combining a THz source with our new understanding of the THz-electron interaction this project will explore a new scheme to create several-MeV electron beams with a high beam quality suitable for electron diffraction. This requires solving problems of using multiple THz interactions to accelerate and manipulate the beam, whilst preserving the electron beam quality. Recent work by the Cockcroft Institute group on chained waveguides in the MeV regime show that control of slice and projected emittance is possible in these THz systems. The researcher will join our running experimental programme of compressing the 100 keV bunches with THz driven velocity bunching and deflecting them using high field THz sources in dielectric lined waveguides. 

The overall aims of the PhD project are:

1.        Demonstrate that acceleration to MeV beam energies can be realised with THz acceleration, and beam control can be realised with synchronised THz compression.

2.        Show that a beam can be produced that is suitable in quality for MeV scale electron diffraction.

3.        Contribute to our 100 keV experimental programme to demonstrate bunching, compression and acceleration through deeper understanding of the THz-beam interaction

The studentship is available the THz group at the Cockcroft Institute, and the researcher will join the University of Manchester to work on the beam dynamics and cavity design for this application. The project will be predominantly theoretical and computational in nature, involving work on developing simulation codes, using codes such as CST and GPT and exploring the beam dynamics of a THz-driven MeV-scale electron diffraction facility. There will also be the opportunity to join our experimental team and perform experimental work at Daresbury Laboratory. The applicant will be expected to have a first or upper second-class degree in physics or other appropriate qualification. Computational experience is desirable but not essential, as is experience in accelerator physics. A full graduate programme of training and development is provided by the Cockcroft Institute. The student will be based primarily at the Institute at Daresbury, with some work at the University of Manchester. A willingness to travel to international conferences is desirable.

Potential applicants are encouraged to contact Prof Rob Appleby () for more information. This position will remain open until filled.

Funding and eligibility: Upon acceptance of a student, this project will be funded by the Science and Technology Facilities Council for 3.5 years; UK and other EU citizens are eligible to apply. A full package of training and support will be provided by the Cockcroft Institute, and the student will take part in a vibrant accelerator research and education community of over 150 people. An IELTS score of at least 6.5 is required.

UKRI studentships cover a student stipend but do not cover the full costs of international tuition fees and the Cockcroft Institute cannot waive the excess. However, we aim, but cannot guarantee, to cover full fees for successful international applicants.

Contact for further information:

How to apply: http://www.cockcroft.ac.uk/join-us

Anticipated Start Date: October 2021 for 3.5 Years 


Funding Notes

Upon acceptance of a student, this project will be funded by the Science and Technology Facilities Council for 3.5 years; UK and other EU citizens are eligible to apply. A full package of training and support will be provided by the Cockcroft Institute, and the student will take part in a vibrant accelerator research and education community of over 150 people. An IELTS score of at least 6.5 is required.

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