Turin Workshop, Cng Eurosea001

MAY 23rd, 2008 TURIN, ENVIRONMENT PARK 1

The Compact Neutron Generator Prototype Eurosea 001

Fulvio Mattioda, PhD

INTERNATIONAL WORKSHOP ON ACCELERATOR BASED NEUTRON SOURCES

FOR MEDICAL, INDUSTRIAL AND SCIENTIFIC APPLICATIONS

EUROPEAN INTERREGIONAL COMMITTEE FORTHE DEVELOPMENT OF INNOVATIVE ENERGY-ENVIRONMENT SYSTEMS

c/o Environment Park, via Livorno 60, 10144 TORINO, [email protected]


First Compact Neutron Generator (CNG) prototype. Main topics:

• D-D fusion reactions generate neutrons;

• neutron output: ~ 10 11 n s-1 ;

• fast (very energetic) neutrons emitted;

• 120 kV, 300 mA current, 36kWt;

• Diameter and height about 50 cm;

• safe and secure, full remote control

WHAT IS EUROSEA 001 ?


Lawrence Berkeley National Laboratory (LBNL), Plasma and Ion Source Technology group, Ca, USA, is responsible for:

development;

manufacturing;

testing and commissioning;

assistance (on site and remote);

further development and improvement

THE DEVELOPMENT OF EUROSEA 001:LBNL, Berkeley


During the last 4 years, EUROSEA Committee has managed and supervised:

Purchase and shipment;

Installation, power supply and first TEST “on site”;

Modification and adaptation of the BUNKER at the Experimental Physics Department, University of Turin;

Preliminary design of EUROSEA 001 based material assemblies for epithermal neutron beam and for thermal neutron flux production;

Worldwide promotion and upgrade

THE DEVELOPMENT OF EUROSEA 001:EUROSEA Committee


EUROSEA 001: how does it work?

High Voltage Shield

Target Water Manifold

Al2O3 High Voltage Insulator

Cylinder Target

Secondary Electron shield

Plasma generator

Vacuum Chamber

RF-Antenna Guide Vacuum Pump

45 cm

60 cm

gas in

RF-Induction Antenna

Extractor slits

• A 13.56 MHz Radio Frequency discharge is used to produce

deuterium ions

• The D ion beam is accelerated up to 120 keV

• The beam impinges on a titanium coated aluminum target where neutrons are generated through the D-D fusion reaction


Main parts and components

• Target manifold

• Electron filter ring

• RF antenna

• RF antenna

• Turbo pump


• Target manifold

• Electron filter ring

• Plasma chamber body

with 7 plasma chamber slit

• RF jacket pipe

• Turbo pump



• Target corona shied

• HV Flange

• Target beam dump

• Flange ground

• RF jacket pipe

• Turbo pump



• Target corona shied

• HV Flange

• HV Insulator

• Flange ground

• Vacuum chamber

• Turbo pump

• Table



At the bunker of Experimental Physics Department, University of Turin (Italy). Civil works for adaptation of:• walls, floor and doors;• safety (interlocks) and security (intrusion detection system);• air ventilation and central heating system;• electrical system (220, 380 V)

Where is EUROSEA 001 now?


An EUROSEA 001-based beam shaping assembly devoted to in situ liver tumor therapy has been studied thanks to “Compagnia di San Paolo” financing and under EUROSEA supervision .Main contributions from:

• “San Giovanni Battista” Hospital, Turin;

• Faculty of Medicine, University of Turin;

• Experimental Physics Department, University of Turin;

• INFN, section of Turin;

• ENEA Bologna, Frascati and Casaccia (Rome);

• Chemistry Department, University of Turin.

EUROSEA 001 + material assemblyfor epithermal neutron beam


An example of an EUROSEA 001-based beam shaping assembly devoted to in situ liver tumor therapy

Further details:E. Durisi et al. “In phantom figure of merit for an epithermal beam produced by a D-D compact neutron generator”, Advanced in Neutron Capture Therapy 2006, Proceedings of ICNCT-12, Takamatsu, Japan

EUROSEA 001 + material assemblyfor epithermal neutron beam


EUROSEA 001 can be coupled with a suitable material

assembly presenting:

• a moderating region (moderator) in heavy water for slowing down fast neutrons avoiding neutron

captures;

• an irradiation region (inside the moderator);

• an outer reflecting region (reflector) in Graphite or

Teflon for limiting neutron leakage and increasing thermal neutron flux inside the moderator

EUROSEA 001 + material assemblyfor thermal neutron flux production


vertical view 1250 cm x 250 cm

vertical view 2250 cm x 250 cm

vertical view 2central region100 cm x 100 cm

irradiationregion

EUROSEA 001 + material assemblyfor thermal neutron flux production


EUROSEA 001:Further development and Upgrade

• As presented by Prof. Leung, further improvements are

expected: at least an order of magnitude for neutron output;

• EUROSEA Committee is managing the upgrade of EUROSEA 001 thanks to the collaboration of its partners;

• At present new plasma chamber body design and target and moderator studies are under development;

• Dimensions and costs of the upgrade version do not

differ from EUROSEA 001 ones


The Compact Neutron Generator Prototype Eurosea 001

THANK YOU VERY MUCH!

INTERNATIONAL WORKSHOP ON ACCELERATOR BASED NEUTRON SOURCES

FOR MEDICAL, INDUSTRIAL AND SCIENTIFIC APPLICATIONS

EUROPEAN INTERREGIONAL COMMITTEE FORTHE DEVELOPMENT OF INNOVATIVE ENERGY-ENVIRONMENT SYSTEMS

c/o Environment Park, via Livorno 60, 10144 TORINO, [email protected]

Turin Workshop, Cng Eurosea001

Technology

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