Neutrinos: who are you and if yes how many?
summary
Direct measurement of the neutrino mass via a 70 m tritium spectrometer claims sensitivity beyond prior limits and an additional search for a sterile neutrino; the apparatus registers ~10^11 decays/s yet only ~1 electron per minute reaches the detector. The 10+ m diameter vessel with 24,000 fine wires arrives and operates; first electrons traverse the full path on 14 Oct 2016. Simulations use Cassiopeia C/C++ simulation discretized into ~5 million elements solved with iterative CPU/GPU runs (~200 h on Berkeley clusters). A seven‑pixel prototype exists, scaling to ~5,000 pixels and >1 GB/s data for the TRISTAN detector prototype.
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chapters (35)
- 0:00Introduction
- 6:50People
- 8:37Atoms
- 14:12Universe
- 15:12Space
- 15:57Poltergeist
- 16:45The neutrino fever
- 17:20Three types of neutrinos
- 19:11What is our universe made of
- 19:56How heavy is the neutrino
- 20:57Radioactive decay
- 22:05Maximum energy
- 22:46Cosworth Tritium
- 23:20Castle Institute of Technology
- 24:58Caching
- 27:15Tritium source
- 29:59Magnetic field
- 31:04Simulations
- 31:33Challenges
- 33:24Simulation
- 33:59Cassia
- 34:38First electrons
- 35:43The neutrino mass
- 37:55New neutrino project
- 38:15Sterile neutrinos
- 39:11Future project
- 39:50Russian experiment
- 41:05Data analysis
- 42:32Python
- 44:44Summary
- 45:42Science Industry Exchange
- 46:47Katherine Experiment
- 49:19Sterile neutrino
- 52:14Mass and flavor
- 54:34Energy spectrum
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