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Astroparticle Physics and Cosmology (APC) Division and Centre for AstroParticle Physics (CAPP) of Saha Institute of Nuclear Physics (SINP), Kolkata will be organising an International workshop on Advances in Astroparticle Physics and Cosmology (AAPCOS) at Saha Institute of Nuclear Physics, Kolkata, India, during 12-17 October, 2015. This conference will focus on the recent excitements in Astroparticle Physics and Cosmology and bring together experimentalists and theorists.
The first two days of the event will be devoted exclusively to pedagogical lecture series on Dark Matter (Theory, Experiment and Phenomenology) meant for students and young researchers.
The rest of the conference will focus on the following topics :
Dark Matter and Dark Energy, Cosmology and Gravity, Physics and Astrophysics of Neutrinos, Supernovae and Compact Objects, Gravitational Waves, High Energy Cosmic Rays and High Energy Gamma Ray Astrophysics.
The program would include plenary talks, invited talks and sessions with contributed talks.
Participation is by INVITATION ONLY.
Registration/Abstract Submission is now CLOSED.
Over the past decades, fundamental physics experiments such as dark matter or double beta decay
have required ultra-low background environments. Successful results from these experiments
depend critically on selection of radiologically ultra-pure materials, high suppression of all types
of radioactivity (cosmic rays, gamma rays, neutrons, radon and its progenies). In the presentation,
I will summarize the deep underground laboratories in the world, the basic methods of selection
of ultra-pure materials, shielding of different types of radioactivity as well as the suppression of
radioactivity caused by the presence of radon. Influence of the background on statistical
significance of the obtained results and the progressive detection methods (pixel detectors)
allowing further suppression of the background will be also presented.
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Over the past decades, fundamental physics experiments such as dark matter or double beta decay
have required ultra-low background environments. Successful results from these experiments
depend critically on selection of radiologically ultra-pure materials, high suppression of all types
of radioactivity (cosmic rays, gamma rays, neutrons, radon and its progenies). In the presentation,
I will summarize the deep underground laboratories in the world, the basic methods of selection
of ultra-pure materials, shielding of different types of radioactivity as well as the suppression of
radioactivity caused by the presence of radon. Influence of the background on statistical
significance of the obtained results and the progressive detection methods (pixel detectors)
allowing further suppression of the background will be also presented.
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This talk begins with a summary of some of Einstein’s seminal contributions in the quantum domain, like Brownian motion and the Light Quantum Hypothesis, as well as on the spacetime continuum enshrined in the theories of special and general relativity. Following up on Einstein’s rationale for postulating the Light Quantum Hypothesis, we attempt to point to a possible dichotomy in his thinking about these two legacies of his, which may have been noticed by him, but was not much discussed by him in the public domain. One may speculate that this may have had something to do with his well-known distaste for the probability interpretation of quantum mechanics as a fundamental interpretation. We argue that Einstein’s general relativity theory itself contains the seeds of a dramatic modification of our ideas of the Einsteinian spacetime continuum, thus underlining the dichotomy even more strongly. We then survey one modern
attempt to resolve the dichotomy, at least partly, by bringing into the spacetime continuum, aspects of quantum mechanics with its underlying statistical interpretation, an approach which Einstein may not have whole-heartedly endorsed, but which seems to work so far, with good prospects for the future.
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Supernova neutrinos can excite the nuclei of different detector materials beyond their neutron emission thresholds through the charged current and neutral current interactions. The emitted neutrons, if detected, can be a signal for the supernova event. In this talk we shall discuss some results for the lead and iron detectors using the realistic neutrino fluxes and energies given by Basel/Darmstadt simulations for a 18 solar mass progenitor supernova.
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