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Reducing RTT with new transmission methods

Reducing RTT with new transmission methods. Matt Crawford Fermilab Data Movement & Storage. ☺. 10 ms. Why reduce RTT?. 120 ms. ☹. Can we shorten the paths?. Cincinnati. Path Optimization. What could be greater than a great circle?. 0.59 c. 0.66 c. 0.77 c. Speed of Light?. 0.9997 c

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Reducing RTT with new transmission methods

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  1. Reducing RTT with new transmission methods Matt Crawford Fermilab Data Movement & Storage

  2. ☺ 10 ms Why reduce RTT? 120 ms ☹

  3. Can we shorten the paths? Cincinnati

  4. Path Optimization What could be greater than a great circle?

  5. 0.59 c 0.66 c 0.77 c Speed of Light?

  6. 0.9997 c Low media Costs, too!

  7. Is that it? • No – LOS problems remain. • No – Safety problems remain. • No – Paths are not as short as possible.

  8. Real Path Optimization

  9. Avoid tunneling costs?

  10. New transmission medium • Neutrinos ! • Loss < 0.00000000000000001 db/km • Infinitesimal media cost • Thermal noise ~ 1.9K • No LOS problems • Inherently multicast-capable • Unregulated spectrum • Penetrate firewalls

  11. Drawbacks • Transceiver state of the art • 200kA xmit focusing current • 5.4 gigagram receiver • Low modulation rate • 10 µs pulses, tunable energy spectrum • Low overall channel efficiency • 3.47 ± 0.18 neutrinos received per 1020 protons on target.

  12. For more information http://www-numi.fnal.gov/ https://netweb.fnal.gov/

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