KIPT ACCELERATOR DRIVEN SYSTEMDESIGN AND PERFORMANCE
Yousry Gohar1, Igor Bolshinsky2, Ivan Karnaukhov3
1 Argonne National Laboratory, USA
2 Idaho National Laboratory, USA

3 Kharkov Institute of Physics & Technology, Ukraine

International Workshop on Technology and Componentsof Accelerator Driven Systems (TCADS-2)
Nantes, France
May 21-23, 2013

KIPT ACCELERATOR DRIVEN SYSTEM DESIGNAND PERFORMANCE US Government is supporting the development and theconstruction of an experimental neutron source facility atKharkov Institute of Physics & Technology, Ukraine.
 Argonne National Laboratory is collaborating with National
Science Center Kharkov Institute of Physics & Technology ofUkraine to construct this facility.
 The facility consists of an accelerator driven subcritical systemutilizing low enriched uranium oxide fuel with water coolant
and beryllium-carbon reflector.
 An electron accelerator is utilized for generating the neutron
source driving the subcritical assembly. The accelerator
provides 100 KW beam using 100 MeV electrons.
 The target material is tungsten or natural uranium cooled withwater.
 The facility startup date is March 2014.

KIPT Experimental Neutron Source Facility
Facility Objectives
 Provide capabilities for performing basic and appliedresearch using neutrons
 Perform physics and material experiments inside thesubcritical assembly and neutron experiments using
cold neutrons Produce medical isotopes and provide neutron sourcefor performing neutron therapy procedures
 Support the Ukraine nuclear power industry byproviding the capabilities to train young specialists

KIPT Experimental Neutron Source Facility
Main Components
 Electron accelerator
 Electron transport channel
 Target Assembly for generating neutrons
 Subcritical assembly with low enrichment uranium
fuel, Beryllium-carbon reflector, and water coolant
 Heavy concrete biological shield Radial neutron channels and cold neutron source forbasic and applied neutron research Auxiliary equipments including the target and thesubcritical assembly coolant loops
 Supporting facilities

KIPT Experimental Neutron Source Facility
Facility General View

KIPT Experimental Neutron Source Facility

KIPT Experimental Neutron Source Facility Overview - 1

KIPT Experimental Neutron Source Facility Overview - 2

KIPT Subcritical Assembly Overview - 3

KIPT Subcritical Assembly Overview - 4

General View of the Subcritical assemblyand the Electron Beam transport Channel

General View inside the Subcritical AssemblyThe Fabricated Subcritical Assembly Tank

Graphite Ring Reflector Loading Test

Target Assembly for generating neutrons Tungsten(1st) and uranium(2nd) are the target
materials for generating neutrons. Water
coolant and aluminum alloy structure areused.
 The target assembly configurations weredeveloped to accommodate square beamcross sections and hexagonal fuel geometry.
 The accelerator produces 100 KW beam with100 MeV electrons.
 Conservative design rules were used for thetarget assembly design.

Tungsten Target Plates

Uranium Target Configuration

Main Electron Beam and Target Geometry Parameters

Tungsten Target

Beam Power:

100 kW

Distribution:

Uniform

Electron Energy: 100 MeV
Beam Size:

64 × 64 mm

Target Plate: 66 × 66 mm
Coolant:

Water

Pressure:

5 atm

Inlet Temperature: 20.0 C
Outlet Temperature: 24.1C

Uranium Target

Water
TargetClad
Water
TargetChannelClad
ChannelPlate Thickness Channel
Plate
NumberThickness
Thickness Thickness
mmThickness Thickness
mmmm
mm
mm
mm

01234567891011Total

1.0
1.75
1.75
1.75
1.75
1.75
1.75
1.0

3.0
3.0
3.0
4.0
4.0
6.0
10.0

0.25x20.25x20.25x20.25x20.25x20.25x20.25x2

12.5

33.0

3.5

1.0
1.75
1.75
1.75
1.75
1.75
1.75
1.75
1.75
1.75
1.75
1.0
19.5

3.0
2.5
2.5
2.5
3.0
3.0
4.0
5.0
7.0
10.0
14.0
56.5

0.7 ×20.95 ×2
0.95 ×2
0.95 ×2
0.7 ×2
0.7 ×2
0.7 ×2
0.7 ×2
0.7 ×2
0.7 ×2
0.7 ×2
16.9

Power and Temperature Distributionsof the Tungsten Target - 1PowerW/cm3

Power and Temperature Distributionsof the Tungsten Target - 2PowerW/cm3

Neutron Source Intensity
Tungsten 1.88x1014 n/s
Uranium 3.06x1014 n/s

WWR-M2 LEU Fuel DesignFuelCladCoolant

Configuration, Neutron Flux and Energy Deposition for the KIPTENSF utilizing Tungsten and Uranium Target Driven
by 100 kw/100 MeV electron beam

Target# of FAs

k-eff

Flux along
the core(n/cm2·s)

W

42*

0.97855±0.00012

1.162e+13±0.36 %1.353e+13±0.33 %U370.97547±0.00012

1.965+13±0.26 %2.470e+13±0.25 %Flux along
the target(n/cm2·s)*Number of fuel assemblies reduced to 38TotalEnergy
EnergyEnergyDeposited in Deposited Deposited inEnergy
the target
in the core the reflector deposition
(KW)
(KW)
(KW)
(KW)
84.19
134.778.10
227.06±0.01 %
±0.35 %
±0.22 %
88.42
±0.01 %

196.89±0.35 %

11.57
±0.19 %

296.89Subcritical Assembly Geometrical Model
Graphite
Reflector

Beryllium
Assemblies

Horizontal Cross Section View

Vertical Cross Section View

Radial and Axial Energy Deposition for Uranium Target
with 37 Fuel assemblies and 100KW/100MeV Electrons(KW/cm3)

Radial and Axial Total Neutron Flux Distributions
Using Uranium Target with 100KW/100MeV Electrons(n/cm2.s)Heavy Concrete Radial Biological Shield(Density 4.8 g/cm3)

TargetUraniumTungstenneutronRadiation Dose(mrem/hr)
0.206 (± 7.24% )Photon0.056 (± 4.63% )

Total

0.262

neutron0.326 (± 0.51 % )Radiation SourceHeavy Concrete Top Biological Shield(Neutrons and photons from the Subcritical Assembly)(Density 4.8 g/cm3)
Biological Dose due to 80 W beamlosses at the bending magnet

KIPT Neutron Source Facility Summary• The KIPT neutron source facility has beensuccessfully developedconstruction.

anditisunder• The facility has a subcritical assembly and it isdriven by 100 KW electron accelerator.
electron energy is 100 MeV.

The

• The subcritical assembly uses low enricheduranium fuel, water coolant, and berylliumgraphite reflector.

• The design satisfies the facility objectives and it
has flexibility for future new functions.

• The startup is planned for March 2014.

Acknowledgements
This work is supported by the U.S.
Department of Energy, Office of Global
Nuclear Material Threat Reduction (NA213),
National Nuclear Security Administration.