59 research outputs found
PHIL photoinjector test line
LAL is now equiped with its own platform for photoinjectors tests and
Research and Developement, named PHIL (PHotoInjectors at LAL). This facility
has two main purposes: push the limits of the photoinjectors performances
working on both the design and the associated technology and provide a low
energy (MeV) short pulses (ps) electron beam for the interested users. Another
very important goal of this machine will be to provide an opportunity to form
accelerator physics students, working in a high technology environment. To
achieve this goal a test line was realised equipped with an RF source, magnets
and beam diagnostics. In this article we will desrcibe the PHIL beamline and
its characteristics together with the description of the first two
photoinjector realised in LAL and tested: the ALPHAX and the PHIN RF Guns
Lepton pairs from a forbidden M0 transition:Signaling an elusive light neutral boson?
Electron-positron pairs have been observed in the 10.95 MeV 0(-) -> 0(+) decay in O-16. This magnetic monopole (M0) transition cannot proceed by gamma-ray decay and is, to first order, forbidden for internal pair creation. However, the transition may also proceed by the emission of a light neutral 0(-) or 1(+) boson, which might play a role in the current quest for light dark matter in the Universe
Anomalous internal pair creation in Be-8 as a signature of the decay of a new particle
In a measurement of the angular correlation of e(+)e(-) pairs in the isovector M1 decay from 1(+) level at 17.64 MeV in Be-8, a large deviation was found from quantum electrodynamics(QED)-prediction for internal pair conversion (IPC). By postulating the emission of a neutral particle with a mass of 12 (2.5) MeV/c(2) the structure of the angular correlation can be described
Federated Identity Management for Research Collaborations
This white-paper expresses common requirements of Research Communities seeking to leverage Identity Federation for
Authentication and Authorisation. Recommendations are made to Stakeholders to guide the future evolution of Federated
Identity Management in a direction that better satisfies research use cases. The authors represent research communities,
Research Services, Infrastructures, Identity Federations and Interfederations, with a joint motivation to ease collaboration
for distributed researchers. The content has been edited collaboratively by the Federated Identity Management for
Research (FIM4R) Community, with input sought at conferences and meetings in Europe, Asia and North America
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