Simulation of the low energy H− injector into the National Spallation Neutron Source radio frequency quadrupole accelerator

1998 ◽  
Vol 69 (2) ◽  
pp. 965-967 ◽  
Author(s):  
M. A. Leitner ◽  
D. C. Wutte ◽  
K. N. Leung
Keyword(s):  
Radio Frequency ◽  
Neutron Source ◽  
Low Energy ◽  
Spallation Neutron Source ◽  
Radio Frequency Quadrupole

scholarly journals Stabilized operation of the Spallation Neutron Source radio-frequency quadrupole

2010 ◽  
Vol 13 (7) ◽  
Author(s):  
Sang-ho Kim ◽  
Alexander Aleksandrov ◽  
Mark Crofford ◽  
John Galambos ◽  
Paul Gibson ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Neutron Source ◽  
Spallation Neutron Source ◽  
Radio Frequency Quadrupole

Beam measurements on the H− source and low energy beam transport system for the Spallation Neutron Source (abstract)

2002 ◽  
Vol 73 (2) ◽  
pp. 1020-1020
Author(s):  
R. Thomae ◽  
R. Gough ◽  
R. Keller ◽  
K. N. Leung ◽  
T. Schenkel ◽  
...  
Keyword(s):  
Neutron Source ◽  
Transport System ◽  
Low Energy ◽  
Spallation Neutron Source ◽  
Beam Transport ◽  
Energy Beam

Plasma ignition schemes for the Spallation Neutron Source radio-frequency driven H− source

2002 ◽  
Vol 73 (2) ◽  
pp. 1017-1019 ◽  
Author(s):  
T. Schenkel ◽  
J. W. Staples ◽  
R. W. Thomae ◽  
J. Reijonen ◽  
R. A. Gough ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Neutron Source ◽  
Spallation Neutron Source ◽  
Plasma Ignition

scholarly journals Cryogenic control system operational experience at SNS

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
M. Howell ◽  
S.-H. Kim ◽  
M. Martinez ◽  
K. White
Keyword(s):  
Control System ◽  
Radio Frequency ◽  
Neutron Source ◽  
Operating Experience ◽  
Lessons Learned ◽  
Operational Experience ◽  
Reliable Control ◽  
Spallation Neutron Source ◽  
Superconducting Radio Frequency ◽  
Machine Interface

AbstractThe helium cryogenic system at Spallation Neutron Source (SNS) provides cooling to 81 superconducting radio frequency cavities. To support the operation of the cryogenic facility, a highly reliable control system consisting of software, hardware, and Human Machine Interface (HMI) has been developed and improved during the first fifteen years of operation. Integrating the cryogenic control system with other subsystems of the SNS complex is an important aspect to the success of the operation. The operating experience, lessons learned and recommendations to consider for future facilities will be detailed in this paper.

scholarly journals Simulating neutron transport in long beamlines at a spallation neutron source using Geant4

2020 ◽  
Vol 22 (2-3) ◽  
pp. 183-189
Author(s):  
Douglas D. DiJulio ◽  
Isak Svensson ◽  
Xiao Xiao Cai ◽  
Joakim Cederkall ◽  
Phillip M. Bentley
Keyword(s):  
Monte Carlo ◽  
Neutron Source ◽  
Variance Reduction ◽  
Neutron Transport ◽  
High Energy ◽  
Low Energy ◽  
Deep Penetration ◽  
Monte Carlo Code ◽  
Spallation Neutron Source ◽  
Unique Challenge

The transport of neutrons in long beamlines at spallation neutron sources presents a unique challenge for Monte-Carlo transport calculations. This is due to the need to accurately model the deep-penetration of high-energy neutrons through meters of thick dense shields close to the source and at the same time to model the transport of low- energy neutrons across distances up to around 150 m in length. Typically, such types of calculations may be carried out with MCNP-based codes or alternatively PHITS. However, in recent years there has been an increased interest in the suitability of Geant4 for such types of calculations. Therefore, we have implemented supermirror physics, a neutron chopper module and the duct-source variance reduction technique for low- energy neutron transport from the PHITS Monte-Carlo code into Geant4. In the current work, we present a series of benchmarks of these extensions with the PHITS software, which demonstrates the suitability of Geant4 for simulating long neutron beamlines at a spallation neutron source, such as the European Spallation Source, currently under construction in Lund, Sweden.

H− radio frequency source development at the Spallation Neutron Source

2012 ◽  
Vol 83 (2) ◽  
pp. 02A725 ◽  
Author(s):  
R. F. Welton ◽  
V. G. Dudnikov ◽  
K. R. Gawne ◽  
B. X. Han ◽  
S. N. Murray ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Neutron Source ◽  
Spallation Neutron Source ◽  
Frequency Source

LOW-ENERGY DEMONSTRATION ACCELERATOR (LEDA) RADIO-FREQUENCY QUADRUPOLE (RFQ) RESULTS

2000 ◽  
Author(s):  
L. M. YOUNG ◽  
G. O. BOLME ◽  
J. D. GILPATRICK ◽  
K. F. JOHNSON ◽  
W. P. LYSENKO ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Low Energy ◽  
Radio Frequency Quadrupole
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