The electron machine with many applications or electron model for many applications (EMMA) is a linear non-scaling FFAG (fixed-field alternating-gradient) particle accelerator at Daresbury Laboratory in the UK that can accelerate electrons from 10 to 20 MeV.[1] A FFAG is a type of accelerator in which the magnetic field in the bending magnets is constant during acceleration. This means the particle beam will move radially outwards as its momentum increases. Acceleration was successfully demonstrated in EMMA, paving the way for future non-scaling FFAGs to meet important applications in energy, security and medicine.
A series of quadrupole magnets that compose the EMMA particle accelerator at Daresbury Laboratory, UK
A linear non-scaling FFAG is one in which a quantity known as the betatron tune is allowed to vary unchecked. In a conventional synchrotron such a variation would result in loss of the beam. However, in EMMA the beam will cross these resonances so rapidly that their effect should not be seen. EMMA will use the ALICE accelerator as a source of electrons and will be situated in the same laboratory at STFC's Daresbury site.
EMMA is a proof-of-principle machine; the experience gained in building this machine will be useful for future muon accelerators (which could be used in neutrino factories), and also for proton and carbon ion particle accelerators, which have applications for cancer therapy.
Non-scaling FFAGs are a good candidate for use in an accelerator-driven subcritical reactor system in which a non-critical fission core is driven to criticality by a small accelerator. Future electrical power generation could be influenced heavily by the use power stations consisting of a sub-critical core containing a material such as thorium, and a small accelerator capable of providing extra neutrons via a spallation target.
EMMA was funded by the BASROC consortium, under the CONFORM umbrella. Commissioning of EMMA began in June 2010 when the beam was injected and sent around part of the ring. Full ring commissioning commenced in August 2010. As of March 31 2011, full ring circumnavigation was completed to establish proof of principle.
Referencesedit
^Machida, S.; et al. (2012). "Acceleration in the linear non-scaling fixed-field alternating-gradient accelerator EMMA". Nature Physics. 8 (3): 243–247. doi:10.1038/nphys2179. S2CID 119530771.
External linksedit
Nature Physics article
R. Edgecock et al., EMMA, The World's First Non-scaling FFAG. Proceedings of the 2008 European Particle Accelerator Conference
emma, accelerator, this, article, needs, additional, citations, verification, please, help, improve, this, article, adding, citations, reliable, sources, unsourced, material, challenged, removed, find, sources, emma, accelerator, news, newspapers, books, schol. This article needs additional citations for verification Please help improve this article by adding citations to reliable sources Unsourced material may be challenged and removed Find sources EMMA accelerator news newspapers books scholar JSTOR August 2015 Learn how and when to remove this message This article includes a list of general references but it lacks sufficient corresponding inline citations Please help to improve this article by introducing more precise citations January 2024 Learn how and when to remove this message The electron machine with many applications or electron model for many applications EMMA is a linear non scaling FFAG fixed field alternating gradient particle accelerator at Daresbury Laboratory in the UK that can accelerate electrons from 10 to 20 MeV 1 A FFAG is a type of accelerator in which the magnetic field in the bending magnets is constant during acceleration This means the particle beam will move radially outwards as its momentum increases Acceleration was successfully demonstrated in EMMA paving the way for future non scaling FFAGs to meet important applications in energy security and medicine A series of quadrupole magnets that compose the EMMA particle accelerator at Daresbury Laboratory UK A linear non scaling FFAG is one in which a quantity known as the betatron tune is allowed to vary unchecked In a conventional synchrotron such a variation would result in loss of the beam However in EMMA the beam will cross these resonances so rapidly that their effect should not be seen EMMA will use the ALICE accelerator as a source of electrons and will be situated in the same laboratory at STFC s Daresbury site EMMA is a proof of principle machine the experience gained in building this machine will be useful for future muon accelerators which could be used in neutrino factories and also for proton and carbon ion particle accelerators which have applications for cancer therapy Non scaling FFAGs are a good candidate for use in an accelerator driven subcritical reactor system in which a non critical fission core is driven to criticality by a small accelerator Future electrical power generation could be influenced heavily by the use power stations consisting of a sub critical core containing a material such as thorium and a small accelerator capable of providing extra neutrons via a spallation target EMMA was funded by the BASROC consortium under the CONFORM umbrella Commissioning of EMMA began in June 2010 when the beam was injected and sent around part of the ring Full ring commissioning commenced in August 2010 As of March 31 2011 full ring circumnavigation was completed to establish proof of principle References edit Machida S et al 2012 Acceleration in the linear non scaling fixed field alternating gradient accelerator EMMA Nature Physics 8 3 243 247 doi 10 1038 nphys2179 S2CID 119530771 External links editNature Physics article ASTeC project page CONFORM EMMA section R Edgecock et al EMMA The World s First Non scaling FFAG Proceedings of the 2008 European Particle Accelerator Conference Williams Peter Particle Accelerators Backstage Science Brady Haran Scientific publications relating to EMMA 53 20 35 N 2 38 26 W 53 34306 N 2 64056 W 53 34306 2 64056 nbsp This accelerator physics related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title EMMA accelerator amp oldid 1195252228, wikipedia, wiki, book, books, library,
