Status of X-band program at RadiaBeam

Luigi FaillaceRadiaBeam Technologies, LLC.

Santa Monica, CA

5th Collaboration Meeting on X-band Accelerator Structure Design and Test Program

• 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

ABOUT RADIABEAM

X-Band Traveling Wave DeflectorHigh Gradient S-Band Linac (DECA)Sincrotrone Trieste PhotoinjectorCompact Industrial Linacs

(MicroLinac, Blood Irradiator)2 NCRF Guns based on Free-FormFabrication (FFF)

5th Collaboration Meeting on X-band Accelerator Structure Design and Test Program

ONGOING PROJECTS

• 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)

5th Collaboration Meeting on X-band Accelerator Structure Design and Test Program

MICROLINAC

Magnetron2.5 μs, D.C.=10-3

Acceleratingstructure

• Table-top prototype is under development• Industrial system to be offered in 2011-2012• Higher energy version for self contained irradiators

under development

5th Collaboration Meeting on X-band Accelerator Structure Design and Test Program

MICROLINAC

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

MICROLINACElectric

Field (MV/m)

MagneticField (Gauss)

MICROLINAC

Beam capture 25 %

Beam energy, exit >1 MeV

Energy gain

Transverse size

Normalized transverseemittance

Blood Irradiator

• Industrial accelerator for blood irradiation, 2 MeV

• Pi/2 accelerating structure, 9.3 GHz

• compact footprint, 11.424 GHz• longitudinal resolution at 100 MeV better than 10 fs

5th Collaboration Meeting on X-band Accelerator Structure Design and Test Program

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

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

X-BAND DEFLECTING CAVITY

• 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

5th Collaboration Meeting on X-band Accelerator Structure Design and Test Program

RF TESTING/VALIDATION CAPABILITIES

Bead-pull measurements

Phas

e

• 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

• 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

5th Collaboration Meeting on X-band Accelerator Structure Design and Test Program

SOLID FREEFORM (SFF) FABRICATION

Enhanced engineering/manufacturing capabilities New Facility + recent expansion New Equipment

Studied and Developed RF manufacturing process workflowsIncreased RF testing/validation capabilitiesDeveloped 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

RESOURCES AND CAPABILITIES

CNC mills and lathes Capable of 0.0002” precision and repeatability (lathe) 2-4 micron flatness 4-6 micro-inch surface finishes (100-150nm) 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

CELL MACHINING AND CLEANING

• 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

CONCLUSIONS