High voltage pulse transformer systems for the FAIR klystron modulators

Coordinating university or institute

Lund University, www.lunduniversity.lu.se



Project description

To generate the required antiproton beam intensity for the FAIR PANDA experiment, a dedicated proton LINAC (pLINAC) for the FAIR accelerator chain is being constructed. Klystron modulators are power converters within the high power RF system of the pLINAC. Here, seven modulator systems with a nominal pulse power amplitude of 115 kV / 54 A, an effective pulse width of 360 µs and a pulse repetition rate of up to 5 Hz are required. These modulators are to be based on pulse transformers whose characteristics largely determine the modulator output pulse quality. This project has considered electromagnetic modeling and optimal design of pulse transformers to deliver a compact system ensuring the RF power requirements of the FAIR pLINAC are met.




Lund University:

  • Max Collins, PhD, Industrial Electrical Engineering and Automation


  • Sven Pütz, Engineer for High Voltage, Power Electronics and Pulsed Power Systems, Accelerator Operations - Linac RF (ACC - LRF)

Core deliverables

  • Global optimization study of high voltage pulse transformer and auxiliary systems accounting for pre-existing klystron modulator primary stage.
  • Complete electromagnetic design of high voltage pulse transformer.
  • Circuit simulation and Multiphysics simulation of FAIR klystron modulator system.
  • Production of a full scale prototype device.
  • Experimental verification of prototype device and the design procedure.

Industry involvement

Production of the full scale prototype device will be contracted to industrial partners.

Total budget

EUR 120,000

Procurement codes

Electrical Engineering and magnets
Electronics and radio frequency
Mechanical Engineering and raw materials

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