The Spallation Neutron Source (SNS) to be built at Oak Ridge National Laboratory (ORNL) is a 2-MW facility with a 2-ma beam of 1-GeV protons impinging on a mercury target and producing pulsed neutrons via the spallation process. The moderators that produce the cold neutrons used by a ...
Define spallation. spallation synonyms, spallation pronunciation, spallation translation, English dictionary definition of spallation. n. A nuclear reaction in which many particles are ejected from an atomic nucleus by incident particles of sufficiently
The Spallation Neutron Source facility to be built at ORNL is designed to accumulate2×1014protons at 1.0 GeV and deliver them to the experimental target in one bunch at 60 Hz. To achieve this goal and protect the machine from excessive radiation activation, an uncontrolled loss criteria of 1...
First experience gained with using such a kind of detector at ORELA (the Oak Ridge Electron Linear Accelerator) neutron source (ORNL) was very optimistic. 展开 关键词: ionization chamber pulsed neutron source DOI: 10.1016/j.nuclphysa.2006.10.041 被引量: 6 ...
Spallation neutron source beam loss monitor system.The Spallation Neutron Source facility to be built at ORNL is designed to accumulate 2×10[sup 14] protons at 1.0 GeV and deliver them to the experimental target in one bunch at 60 Hz. To achieve this goal and protect the machine from ...
OfficeofScienceoftheDOE,andORNL.†rrm@lanl.govAbstractTheSpallationNeutronSource(SNS)projectincorporatesasuperconductingradio-frequency(SRF)acceleratorforthefinalsectionofthepulsedmodelinacCavitieswithgeometricalβvaluesofβ=0.61andβ=0.81areutilizedintheSRFsection,andareconstructedoutofthin-walledniobiumwith...
ORNL is in the fight against COVID-19 Morgan McCorkle - 《Oak Ridge National Laboratory Review》 - 2020 - 被引量: 0 The CombLayer build of the MCNPX models for the design of the fast neutron ports i...
Shielding Calculations for the Proposed NISOL Facility at the ORNL Spallation Neutron SourceRadioactive Ion Beam FacilityProton BeamTargetBeam StopShieldingStreamingThe design of the proposed NISOL facility has been investigated with respect to shielding. The Monte Carlo code MCNPX was used to obtain ...
The SNS is a 60 Hz pulsed neutron source and currently operates at 1.4 MW, although efforts are underway to increase the operating power of the mercury target to 2 MW[3]. The pressure pulses repeatedly strain the vessel into the giga-cycle regime over the lifetime of the target. The temp...
However, the neutron capture process is the main mechanism of decay heat generation in the Ta claddings and Ta blocks. The decay Acknowledgments The authors would like to thank Dr. Franz X. Gallmeier and Dr. W. Lu (of SNS at ORNL) for kindly supplying the activation script and for ...