Simulation of a beam rotation system for a spallation source
With a nominal beam power of nearly 1 MW on target, the Swiss Spallation Neutron Source (SINQ), ranks among the world’s most powerful spallation neutron sources. The proton beam transport to the SINQ target is carried out exclusively by means of linear magnetic elements. In the transport line to SIN...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2015-04-01
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| Series: | Physical Review Special Topics. Accelerators and Beams |
| Online Access: | http://doi.org/10.1103/PhysRevSTAB.18.044701 |
| _version_ | 1818947314345050112 |
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| author | Tibor Reiss Davide Reggiani Mike Seidel Vadim Talanov Michael Wohlmuther |
| author_facet | Tibor Reiss Davide Reggiani Mike Seidel Vadim Talanov Michael Wohlmuther |
| author_sort | Tibor Reiss |
| collection | DOAJ |
| description | With a nominal beam power of nearly 1 MW on target, the Swiss Spallation Neutron Source (SINQ), ranks among the world’s most powerful spallation neutron sources. The proton beam transport to the SINQ target is carried out exclusively by means of linear magnetic elements. In the transport line to SINQ the beam is scattered in two meson production targets and as a consequence, at the SINQ target entrance the beam shape can be described by Gaussian distributions in transverse x and y directions with tails cut short by collimators. This leads to a highly nonuniform power distribution inside the SINQ target, giving rise to thermal and mechanical stresses. In view of a future proton beam intensity upgrade, the possibility of homogenizing the beam distribution by means of a fast beam rotation system is currently under investigation. Important aspects which need to be studied are the impact of a rotating proton beam on the resulting neutron spectra, spatial flux distributions and additional—previously not present—proton losses causing unwanted activation of accelerator components. Hence a new source description method was developed for the radiation transport code MCNPX. This new feature makes direct use of the results from the proton beam optics code TURTLE. Its advantage to existing MCNPX source options is that all phase space information and correlations of each primary beam particle computed with TURTLE are preserved and transferred to MCNPX. Simulations of the different beam distributions together with their consequences in terms of neutron production are presented in this publication. Additionally, a detailed description of the coupling method between TURTLE and MCNPX is provided. |
| first_indexed | 2024-12-20T08:28:56Z |
| format | Article |
| id | doaj.art-ac21bfefe2274f14a4511eee00c12a29 |
| institution | Directory Open Access Journal |
| issn | 1098-4402 |
| language | English |
| last_indexed | 2024-12-20T08:28:56Z |
| publishDate | 2015-04-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Special Topics. Accelerators and Beams |
| spelling | doaj.art-ac21bfefe2274f14a4511eee00c12a292022-12-21T19:46:46ZengAmerican Physical SocietyPhysical Review Special Topics. Accelerators and Beams1098-44022015-04-0118404470110.1103/PhysRevSTAB.18.044701Simulation of a beam rotation system for a spallation sourceTibor ReissDavide ReggianiMike SeidelVadim TalanovMichael WohlmutherWith a nominal beam power of nearly 1 MW on target, the Swiss Spallation Neutron Source (SINQ), ranks among the world’s most powerful spallation neutron sources. The proton beam transport to the SINQ target is carried out exclusively by means of linear magnetic elements. In the transport line to SINQ the beam is scattered in two meson production targets and as a consequence, at the SINQ target entrance the beam shape can be described by Gaussian distributions in transverse x and y directions with tails cut short by collimators. This leads to a highly nonuniform power distribution inside the SINQ target, giving rise to thermal and mechanical stresses. In view of a future proton beam intensity upgrade, the possibility of homogenizing the beam distribution by means of a fast beam rotation system is currently under investigation. Important aspects which need to be studied are the impact of a rotating proton beam on the resulting neutron spectra, spatial flux distributions and additional—previously not present—proton losses causing unwanted activation of accelerator components. Hence a new source description method was developed for the radiation transport code MCNPX. This new feature makes direct use of the results from the proton beam optics code TURTLE. Its advantage to existing MCNPX source options is that all phase space information and correlations of each primary beam particle computed with TURTLE are preserved and transferred to MCNPX. Simulations of the different beam distributions together with their consequences in terms of neutron production are presented in this publication. Additionally, a detailed description of the coupling method between TURTLE and MCNPX is provided.http://doi.org/10.1103/PhysRevSTAB.18.044701 |
| spellingShingle | Tibor Reiss Davide Reggiani Mike Seidel Vadim Talanov Michael Wohlmuther Simulation of a beam rotation system for a spallation source Physical Review Special Topics. Accelerators and Beams |
| title | Simulation of a beam rotation system for a spallation source |
| title_full | Simulation of a beam rotation system for a spallation source |
| title_fullStr | Simulation of a beam rotation system for a spallation source |
| title_full_unstemmed | Simulation of a beam rotation system for a spallation source |
| title_short | Simulation of a beam rotation system for a spallation source |
| title_sort | simulation of a beam rotation system for a spallation source |
| url | http://doi.org/10.1103/PhysRevSTAB.18.044701 |
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