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Trainee Position in physics, engineering – PSI, Switzerland 2022

Paul Scherrer Institut (PSI), Switzerland

For Large Research Facilities Division we are looking for a Trainee at the Paul Scherrer Institute PSI, Switzerland 2022

BC1-SRM machine learning study: how to infer the electron bunch-length from the bunch energy distribution measured by a synchrotron radiation monitor in a chicane


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General Info

Position: Trainee
No. of Positions: 1
Research Field: ,
Joining Date: ASAP
Contract Period: 3 months
Salary: According to Standard Norms

Large Research Facilities Division
Paul Scherrer Institut (PSI), Switzerland
Villigen PSI, Switzerland

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Qualification Details

  • You study in physics, engineering, or a similar field (minimum 4 semesters)
  • You have an interest in developing new instruments and measurement methods
  • You are open-minded, communicative and you enjoy working in an international team
  • You have not yet completed your Master’s thesis

Responsibilities/Job Description

The Synchrotron Radiation Monitor (SRM) - installed in BC1 of SwissFEL - permits a fully non-invasive imaging in the visible of the edge synchrotron radiation (SR) emitted by the electron beam at the entrance of the third dipole of the chicane. From the knowledge of the dispersion of the magnetic chicane, the analysis of the horizontal distribution of the acquired SR images of the beam permits to determine the central energy and energy spread of the beam. The acquisition of the BC1-SRM images is beam-synchronous at a repetition rate of 100 Hz. Moreover, thanks to a fast gated MCP, the BC1-SRM camera is able to discriminate either the first or the second bunch in the 28ns long beam macro-structure. Possible application of this non-invasive monitor concerns the optimization of the compression phase of the off-crest RF structures of the injector as well as the phase of the X-band linearizer. Recently, it was also demonstrated how to estimate the electron bunch length from the beam synchronous acquisition of the BC1-SRM images and the parameters (phase and amplitude) of the RF structures of the injector. In conclusion, the potentialities of the BC1-SRM in optimizing the RF parameters of the linearized compression in the SwissFEL injector together with the most recently demonstrated potentiality in determining the bunch length permit to envisage a possible machine learning application from the analysis of the beam energy distribution measured by the SRM at the BC1 chicane.

How to Apply?

Application Method: Online Application
Ref. No.: 8123-T1

Application Procedure

Document required to complete the online application process

About the Employer: Paul Scherrer Institut (PSI), Switzerland

Note or Other details

Our institution is based on an interdisciplinary, innovative and dynamic collaboration.The contract will be limited to 3 months.

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Contact details

For further information, please contact Dr Gian Luca Orlandi, phone +41 56 310 47 39.

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