Abstract
In order to obtain large yields of fast neutrons it is common practice to
use a spallation mechanism by bombarding some high atomic number target
material with a high energy and high intensity proton beam. This principle is
used in powerful pulsed neutron sources like ISIS [r], SNS [2] and ESS [3]. It
is also used as a continuous neutron generator, e.g. at SINQ [4]. The subcritical core of an Accelerator Driven System (ADS) requires a comparable neutron yield for the assembly to deliver a sizeable amount of fission power.
Hence the same spallation mechanism is considered.
In the case of the MYRRHA project [j], being an ADS delivering around
80 MWth, the neutron production has to be in the 10'7 n/s range. The
geometry of its core is optimized for 600 MeV protons. The requested
maximum beam intensity is then obtained from Monte-Carlo simulations
using the MCNPX code [6] as 4 mA. The fundamental beam requirements
for MYRRHA are summarized in table I.
use a spallation mechanism by bombarding some high atomic number target
material with a high energy and high intensity proton beam. This principle is
used in powerful pulsed neutron sources like ISIS [r], SNS [2] and ESS [3]. It
is also used as a continuous neutron generator, e.g. at SINQ [4]. The subcritical core of an Accelerator Driven System (ADS) requires a comparable neutron yield for the assembly to deliver a sizeable amount of fission power.
Hence the same spallation mechanism is considered.
In the case of the MYRRHA project [j], being an ADS delivering around
80 MWth, the neutron production has to be in the 10'7 n/s range. The
geometry of its core is optimized for 600 MeV protons. The requested
maximum beam intensity is then obtained from Monte-Carlo simulations
using the MCNPX code [6] as 4 mA. The fundamental beam requirements
for MYRRHA are summarized in table I.
Original language | English |
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Pages (from-to) | 99-114 |
Number of pages | 16 |
Journal | Revue des questions scientifiques |
Volume | 184 |
Issue number | 1+2 |
State | Published - 2013 |