1. Sergey Antipov, J. Qiu, C. Jing, A. Kanareykin Euclid Techlabs LLC
Ultra-Compact RF Accelerator for Industrial Applications (electron RF linacs as gamma ray sources)
Sergey Antipov, J. Qiu, C. Jing, A. Kanareykin
Euclid Techlabs LLC
11/13/2015

2. Euclid produces S-band photo injectors
Availability of sources

3. Where ultra compact is important?
The entire accelerator system, including its modulator, other electronics, and cooling system, must be confined to a diameter of about 4 inches and a length of 20 feet and be operated remotely through perhaps 10 km of cable.
From “Present and Future Applications of
Industrial Accelerators”. SLAC eCONF C
Craig S. Nunan (Varian Associates, Inc), 1989

4. Dielectric – loaded accelerating structures
Iris-Loaded waveguide
Dielectric-Loaded waveguide
Dielectric-Loaded waveguide
TM01-TE10 coupler
rf output port
Important things to consider:
Charging (DC – conductive ceramics)
Multipactor (TiN - coatings)

5. Pencil – size accelerator
Input energy
20 keV
Input current
10 mA
Number of cells 10
RF power (peak)
78.9 kW
RF power (average)
80 W
Output energy
301 keV
Total Length
10 cm ID
3.0 mm
Max. OD
9.3 mm
MCT ceramics:
ε = 20
Metallized on the outside with ~ 100μ copper layer
9.4 GHz
Euclid proprietary

6. Ultimate goal: ultra compact X-band accelerator
for security and medical applications
acc. structure
magnetron
modulator

7. Ultra - compact (ultra - light) for x-ray radiography
non-destructive evaluation (NDE)
Magnetron + modulator
Funded by DOE SBIR (Phase I)
Euclid proprietary

8. BROKK @ industrial exhibit
(courtesy of BROKK, Inc.)

9. Geant4 gamma ray spectrum
Ultra - compact (ultra - light) for x-ray radiography
Frequency
9.4 GHz
Energy
1 MeV
Average Current
50 µA
RF power
250 kW
Duty factor
0.001
Electron gun energy
20 keV
Dose 1 m
38 mGy/min
Structure length
40 cm
Geant4 gamma ray spectrum
1 MeV e-beam, 50mGy/min dose rate, 1 sec integration
M. Uesaka et. al. E-Journal of Advanced Maintenance Vol.5-2 (2013)
Euclid proprietary

10. X-band (~10 GHz) dielectric loaded accelerator
Possible designs
X-band (~10 GHz) dielectric loaded accelerator
Frequency
Light - 500
Medium
High
Energy
500 keV
1 MeV
3 MeV
Average Current
40 uA
100 uA RF
50 kW
250 kW
1500 kW
Duty
1e-3
E-gun
20 keV
Structure length
40 cm
80 cm
Euclid proprietary

11. Progress and plans Designed and built two (300keV and 500keV) options
Cold test: coupling, beadpull – field balance
Euclid holds a joint patent with S&P500 company
Upcoming milestones:
Condition structure
to 80kW (by end of 2015)
Beam current transmission studies (early 2016)
Euclid proprietary

12. Conclusions Euclid is developing an ultra-compact and light
1 MeV electron accelerator
Cold tests have been done on a first prototype
High power tests are planned for the end of 2015
These will determine practical limits of our technology, e.g. max current, beam power, reliability.
Euclid gratefully acknowledges the support from the DOE SBIR Program.