1. Status of X-band program at RadiaBeam
Luigi Faillace
RadiaBeam Technologies, LLC.
Santa Monica, CA
5th Collaboration Meeting on X-band Accelerator Structure Design and Test Program

2. ABOUT RADIABEAM
RadiaBeam Technologies, LLC. is a small business with core expertise in accelerator physics.
Spin-off from UCLA (2003)
Extensive R&D Program (DOE, DOD, DHS, NSF)
Growing products line for research laboratories and industrial customers (magnets, diagnostics, RF structures, complete systems)
5th Collaboration Meeting on X-band Accelerator Structure Design and Test Program

3. ONGOING PROJECTS X-Band Traveling Wave Deflector
High Gradient S-Band Linac (DECA)
Sincrotrone Trieste Photoinjector
Compact Industrial Linacs (MicroLinac, Blood Irradiator)
2 NCRF Guns based on Free-Form
Fabrication (FFF)
5th Collaboration Meeting on X-band Accelerator Structure Design and Test Program

4. MICROLINAC Tech transfer from SLAC
Portable, air-cooled, ultra-low cost, 1 MeV (two structures operating in pi mode, 9.4 GHz)
industrial accelerator for radiography applications (replacement for radioisotope sources)
Accelerating
structure
Magnetron
2.5 μs, D.C.=10-3
5th Collaboration Meeting on X-band Accelerator Structure Design and Test Program

5. MICROLINAC Table-top prototype is under development
Industrial system to be offered in
Higher energy version for self contained irradiators under development
5th Collaboration Meeting on X-band Accelerator Structure Design and Test Program

6. MICROLINAC Electric Field (MV/m) Magnetic Field (Gauss)
Accelerating gradient
3 MV/m
RF frequency
9.4 GHz
Power dissipated/structure
25 kW
Beam Current, input
50 mA
Duty Cycle
0.001
Beam Energy, input
14 keV

7. Normalized transverse
MICROLINAC
Transverse size
Energy gain
Beam capture
25 %
Beam energy, exit
>1 MeV
Normalized transverse
emittance

8. Blood Irradiator Industrial accelerator for blood irradiation, 2 MeV
Pi/2 accelerating structure, 9.3 GHz

9. X-BAND DEFLECTING CAVITY
compact footprint, GHz
longitudinal resolution at 100 MeV better than 10 fs
5th Collaboration Meeting on X-band Accelerator Structure Design and Test Program

10. X-BAND DEFLECTING CAVITY
Present Status: in fabrication
Adapted cleaning and handling procedures from SLAC (developed for high gradient structures)
5th Collaboration Meeting on X-band Accelerator Structure Design and Test Program

11. X-BAND DEFLECTING CAVITY
8 cells + couplers prototype was assembled and tested
Commissioning plans at BNL – Summer 2011
(bead pull measurements at RadiaBeam )
5th Collaboration Meeting on X-band Accelerator Structure Design and Test Program

12. RF TESTING/VALIDATION CAPABILITIES
Single Cell Testing
Used for relative cell to cell analysis
Cell Stack
Utilized for resonant frequency verification
Clamped structure
Validates coupler quality
utilized in bead pull / tuning setup under development for tuning
Bead-pull measurements
Phase
5th Collaboration Meeting on X-band Accelerator Structure Design and Test Program

13. SOLID FREEFORM (SFF) FABRICATION
SFF is an additive manufacturing process where end-use, metal, parts are directly fabricated, layer by layer, from a digital model
SFF produces fully-dense metal parts with features such as internal cooling channels
SFF copper cathode cathode recently successfully tested at UCLA’s Pegasus photoinjector under high RF power
Stable operation at 70 MV/m peak fields on cathode after 2 hours of conditioning
QE measured (~2x10-5), and consistent with wrought OFE copper at given gradient
5th Collaboration Meeting on X-band Accelerator Structure Design and Test Program

14. RESOURCES AND CAPABILITIES
Enhanced engineering/manufacturing capabilities
New Facility + recent expansion
New Equipment
Studied and Developed RF manufacturing process workflows
Increased RF testing/validation capabilities
Developed custom UHV/RF component cleaning and assembly facilities
Following SLAC developed guidelines
Presents us with full control over almost all critical processes (no oven)
Collaborations with Universities and National Laboratories
5th Collaboration Meeting on X-band Accelerator Structure Design and Test Program

15. CELL MACHINING AND CLEANING
CNC mills and lathes
Capable of ” precision and repeatability (lathe)
2-4 micron flatness
4-6 micro-inch surface finishes ( nm)
Developed specialized workholding tooling
Optimized cutting tooling (PCD)
Refurbished or manufactured storage and travel containers
Considerable man-hours invested into process and handling systematics
Chemical cleaning room
With guidance from SLAC MFD
Utilize a modified version of SLAC cleaning processes
Clean Assembly / Testing Room
Class 100 / Class 1000
5th Collaboration Meeting on X-band Accelerator Structure Design and Test Program

16. First high gradient structure will be commissioned this year
CONCLUSIONS
RadiaBeam Technologies is actively developing X- band accelerating systems for commercial applications
First high gradient structure will be commissioned this year
5th Collaboration Meeting on X-band Accelerator Structure Design and Test Program