• John
  • Felde
  • University of Maryland
  • USA

Latest Posts

  • USLHC
  • USLHC
  • USA

Latest Posts

  • Flip
  • Tanedo
  • USLHC
  • USA

Latest Posts

  • CERN
  • Geneva
  • Switzerland

Latest Posts

  • Aidan
  • Randle-Conde
  • Université Libre de Bruxelles
  • Belgium

Latest Posts

  • Laura
  • Gladstone
  • University of Wisconsin, Madison
  • USA

Latest Posts

  • Richard
  • Ruiz
  • Univ. of Pittsburgh
  • U.S.A.

Latest Posts

  • Seth
  • Zenz
  • Imperial College London
  • UK

Latest Posts

  • Michael
  • DuVernois
  • Wisconsin IceCube Particle Astrophysics Center
  • USA

Latest Posts

  • Jim
  • Rohlf
  • USLHC
  • USA

Latest Posts

  • Emily
  • Thompson
  • USLHC
  • Switzerland

Latest Posts

  • Ken
  • Bloom
  • USLHC
  • USA

Latest Posts

Mike Anderson | USLHC | USA

View Blog | Read Bio

Wrapping up another owl shift

It’s 5:45am, and my shift doesn’t end for another hour at 7am.

We were so close to getting to record some more collision data during this shift, only for the beam to be dumped due to some problems.  I’ll have to ask experts to see what a “1/3 resonance” means.

Hopefully they’ll have more luck during the morning and afternoon shift so that by the time I’m on shift again at 11pm I’ll get to watch more data being taken in person.

Share

One Response to “Wrapping up another owl shift”

  1. Anders L says:

    When they talk about a 1/3 resonance, they mean that the tune of the beam hits the 1/3 resonance. This means that after 3 circulations the particles in the beam are back at the exact same point in the orbit. If there is a small imperfection in the magnetic field or another defect which affect the particles, it would normally average out because the particles of the beam never sees this defect the same way. But if the beam tune hits a resonance, e.g. the 1/3 resonance, the particles a affected by the defect in exactly the same way on every 3th turn. With a velocity of 3e8 m/s this is something like three thousand times per second. This will affect the orbit of the beam very much, and this was exactly what happened this morning.

    Cheers Anders
    – Just a LHC enthusiast

Leave a Reply

Commenting Policy