| Title |
Neutron Shielding Optimization Studies |
| Authors |
- A. Bungau, R.J. Barlow
University of Huddersfield, Huddersfield, United Kingdom
- J.R. Alonso, L.M. Bartoszek, J.M. Conrad
MIT, Cambridge, Massachusetts, USA
- M. Shaevitz
Columbia University, New York, USA
|
| Abstract |
The IsoDAR sterile-neutrino search calls for a high neutron flux from a 60 MeV proton beam striking a beryllium target, that flood a sleeve of highly-enriched ⁷Li, the beta-decay of the resulting ⁸Li giving the desired neutrinos for the very-short-baseline experiment. The target is placed very close to an existing large neutrino detector; all such existing or planned detectors are deep underground, in low-background environments. It is necessary to design a shielding enclosure to prevent neutrons from causing unacceptable activation of the environment. GEANT4 is being used to study neutron attenuation, and optimizing the layers of shielding material to minimize thickness. Materials being studied include iron and two new types of concrete developed by Jefferson Laboratory, one very light with shredded plastic aggregate, the other with high quantities of boron. Initial studies indicate that a total shielding thickness of 1.5 meters produces the required attenuation factor, further studies may allow decrease in thickness. Minimizing it will reduce the amount of cavity excavation needed to house the target system in confined underground spaces.
|
| Paper |
download TUPWI019.PDF [0.904 MB / 3 pages] |
| Export |
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| Conference |
IPAC2015, Richmond, VA, USA |
| Series |
International Particle Accelerator Conference (6th) |
| Proceedings |
Link to full IPAC2015 Proccedings |
| Session |
Tuesday Posters (Wilson) |
| Date |
05-May-15 16:00–18:00 |
| Main Classification |
8: Applications of Accelerators, Tech Transfer, and Industrial Relations |
| Sub Classification |
U05 - Other Applications |
| Keywords |
neutron, shielding, target, detector, proton |
| Publisher |
JACoW, Geneva, Switzerland |
| Editors |
Stuart Henderson (ANL, Argonne, IL, USA); Evelyn Akers (Jlab, Newport News, VA, USA); Todd Satogata (JLab, Newport News, VA, USA); Volker R.W. Schaa (GSI, Darmstadt, Germany) |
| ISBN |
978-3-95450-168-7 |
| Published |
June 2015 |
| Copyright |
|
