Institutionen för fysik och astronomi

Seminarium: The latest design of the DAEdALUS and IsoDAR coupled-cyclotron, high-intensity, H_2^+ driver beams for neutrino production

Nuclear and high energy physics seminar about the proposed experiments DAEdALUS and IsoDAR to search for CP violation in the neutrino sector, and “sterile” neutrinos, respectively.


The Decay-At-rest Experiment for δ_CP violation At a Laboratory for Underground Science (DAEδALUS) [1] and the Isotope Decay-At-Rest experiment (IsoDAR) [2] are proposed experiments to search for CP violation in the neutrino sector, and “sterile” neutrinos, respectively. In order to be decisive within 5 years, the neutrino flux and, consequently, the driver beam current (produced by chained cyclotrons) must be high. H_2^+ was chosen as primary beam ion in order to reduce the electrical current and thus space charge. This has the added advantage of allowing for stripping extraction at the exit of the DAEδALUS Superconducting Ring Cyclotron (DSRC). The primary beam current is higher than existing cyclotrons have demonstrated which has led to a substantial R&D effort of our collaboration in the last years. I will present the results of this research, including tests of prototypes and highly realistic beam simulations, which led to the latest physics-based design. The presented results demonstrate that it is feasible, albeit difficult, to accelerate 5 mA of H_2^+ to 60 MeV/amu in a compact cyclotron and boost it to 800 MeV/amu in the DSRC with clean extraction in both cases.



[1] The DAEδALUS collaboration, “Whitepaper on the DAEdALUS program,” arXiv:1307.2949, 2013

[2] A. Bungau, et al., “Proposal for an Electron Antineutrino Disappearance Search Using High-Rate 8Li Production and Decay,“ Phys. Rev. Lett., Bd. 109, Nr. 14, p. 141802, 2012.