Upload
austen-sanders
View
221
Download
3
Tags:
Embed Size (px)
Citation preview
The Front End Test
StandTalk 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
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
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
Inside the 70 kV high
voltage platform
Latest beam current measurements
Discharge pulse length
70 mA H-, 1 ms pulse length at 50 Hz is achievable
2. Laser Diagnostics
-
- - - -- - -
--- -
- -
- -
--
- -
-
-
--
-
LASER
Photodetachment
Chargeseparation
Magneticdipole
I(t)1dim profile,
long. emi
I(x,y,t)2dim profile,
trans. emi
Detection ofdistribution
-
-- ---
-
y
z
Christoph Gabor
Laser Profile Measurement
Calculate profile using Maximum Entropy algorithm
David Lee
Improved Electronics developed by Imperial College and Royal Holloway
Avoids ground loops using opto-isolators
Saad Alsari + Gary Boorman
2202-001 2202-002 2202-003
More stable and higher power (20 W) laser on loan from Frankfurt University
3. Three solenoid magnetic LEBT
50 mA achieved at entrance of RFQ
John Back
Simulated
Measured
4. 324 MHz, 3 MeV, 4 vane RFQ
Pete Savage
RFQ construction techniques
Pete Savage
Different designs and novel cooling schemes investigated
Scott Lawrie
ANSYS Coupled solver processResonant 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
Max Temperature = 37 °C
60W input RF power
ANSYS Simulation
Cold Model Tests
Temperature Rise 15 °C 15.6 °C
Frequency Shift -78 kHz -89 kHz
Max Structural Deformation = 0.3 mmRFQ cold model with 60 W DC input RF power and no cooling applied.
Reference Phase
Feedback Phase
RFQ Tuner System
Saad Alsari
Tuner tested on cold model
Control electronics complete
RFQ Modulation Design
Simon Jolly
Parameterized modulations in Autodesk Inventor
Electromagnetic fields solved in CST EM studio
Particle transport solved in GPT
5. MEBT and beam chopper
Beamline design
Re-buncher cavities
Permanent magnet quadrpoles
Chip Plostinar
Chopper Electrode Designs
Short length helical prototype
Short length planar prototype
Mike Clarke-Gayther
6. Beam dump
Rafa Emparanza
Manufacturing test
Thermal simulation Engineering design
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