1. FETS Progress UKNF OsC 21 st June 2010 Dan Faircloth Faircloth

2. The Front End Test Stand Talk outline 1. High power H - ion source 4. 324 MHz, 3 MeV, 4 vane RFQ 3. Three solenoid magnetic LEBT 5. MEBT and beam chopper 6. Beam dump 2. Laser profile measurement - A high power proton driver for the UKNF

3. FETS is a collaboration Work presented here: D. Faircloth, A. Letchford, S. Lawrie, M. Clarke-Gayther, C. Gabor, P Wise, M. Whitehead, T. Wood, M. Perkins, M. Bates, C. Plostinar, D. Findlay, P. Savage, D. Lee, S. Jolly, S. Alsari, A. Kurup, J. Pozimski, A. Bosco, G. Boorman, G. Blair, J. Feuchtwanger, F. J. Bermejo, J. Lucas, J. Alonso, R. Enparantza, I. Ariz, P. Romano, A. Sedano, V. Etxebarria, H. Hassanzadegan, N. Garmendia, M. Eguiraun

4. 1st FETS Beam April 2009 35 mA 200 µs 50 Hz Presented at PAC09 1. High Power H - Ion Source Penning ‘Surface Plasma Source’ based on the successful ISIS design

6. Inside the 70 kV high voltage platform

7. Latest beam current measurements Discharge pulse length 70 mA H -, 1 ms pulse length at 50 Hz is achievable

8. 2. Laser Diagnostics Christoph Gabor

9. Laser Profile Measurement Calculate profile using Maximum Entropy algorithm David Lee

10. Improved Electronics developed by Imperial College and Royal Holloway Avoids ground loops using opto-isolators Saad Alsari + Gary Boorman

11. 2202-0012202-0022202-003 More stable and higher power (20 W) laser on loan from Frankfurt University

12. 3. Three solenoid magnetic LEBT

13. 50 mA achieved at entrance of RFQ John Back Simulated Measured

14. 4. 324 MHz, 3 MeV, 4 vane RFQ Pete Savage

16. RFQ construction techniques Pete Savage

17. Different designs and novel cooling schemes investigated Scott Lawrie

18. ANSYS Coupled solver process Resonant frequency: High-frequency electromagnetic eigenmode solver Surface heat flux: Use macro to convert magnetic fields to thermal element loads Temperature distribution: Thermal solver Vane and wall displacement: Structural solver Frequency shift: Export results to MATLAB Slater perturbation algorithm Scott Lawrie

19. Max Temperature = 37 °C 60W input RF power ANSYS Simulation Cold Model Tests Temperature Rise 15 °C15.6 °C Frequency Shift -78 kHz-89 kHz Max Structural Deformation = 0.3 mm RFQ cold model with 60 W DC input RF power and no cooling applied.

20. Reference Phase Feedback Phase RFQ Tuner System Saad Alsari Tuner tested on cold model Control electronics complete

21. RFQ Modulation Design Simon Jolly Parameterized modulations in Autodesk Inventor Electromagnetic fields solved in CST EM studio Particle transport solved in GPT

22. 5. MEBT and beam chopper Beamline design Re-buncher cavities Permanent magnet quadrpoles Chip Plostinar

23. Chopper Electrode Designs Short length helical prototype Short length planar prototype Mike Clarke-Gayther

24. 6. Beam dump Rafa Emparanza Manufacturing test Thermal simulation Engineering design

25. In Summary Ion source and LEBT successfully commissioned Laser diagnostics progressing well RFQ design nearing completion Prototype chopper and MEBT design Beam dump being manufactured