1. P ROGRESS ON THE K LYSTRON M ODULATORS C HARGERS FOR CLIC Sklavounou Eleni TE – EPC – FPC

2. O PTIMIZATION S TRUCTURE We are creating models to be integrated in a global optimization environment. Charger  Bandwidth  Charger (internal ) capacitor  Charger size  Cost  Efficiency  Power fluctuation Grid  Active power fluctuation  Maximum power  Voltage level PFS  Voltage droop  Precision (voltage reproducibility) Specifications and / or constraints

3. Grid  Active power fluctuation  Maximum power  Voltage level PFS  Voltage droop  Precision (voltage reproducibility) Specifications and / or constraints Charger  Bandwidth  Charger (internal ) capacitor  Charger size  Cost  Efficiency  Power fluctuation  Objectives or constraints  Variables (topology selection and dimensioning)  Part of the global optimization

4. S IZE OF C HARGER AND C APACITOR B ANK Charger size: waiting offers from Heinzinger, Fug, Technix. Capacitor size: AVX Film Capacitors

5. S IMULATIONS If we want a constant charging power: Charging Current Ideal charging current Very high bandwidth charger needed

6. S IMULATIONS If we model the capacitor charger as a 2 nd order transfer function: Power Consumption

7. S IMULATIONS Result: Power fluctuation as a function of the bandwidth of the charger.

8. S IMULATIONS Now, we are studying a capacitor charger topology considering the internal capacitor as a second “filter”. Which are the compromises between the internal capacitance and the bandwidth?

9. Merci pour votre attention. At your disposal for any questions.