BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Optical Stochatic Cooling of Electrons -- Maxwell's Demon goes opt
 ical! - Prof. Swapan Chattopadhyay (Fermilab/NIU/CERN/Stanford)
DTSTART:20220628T130000Z
DTEND:20220628T140000Z
UID:TALK173258@talks.cam.ac.uk
CONTACT:William Fawcett
DESCRIPTION:In particle colliders\, stochastic phase space cooling using m
 icrowave techniques in the GHz frequency range have been employed historic
 ally\, leading to ground-breaking discoveries\, as cooling increases the l
 ikelihood of observing rare physics events. One of the most important conc
 eptual and technological advances in this area was stochastic cooling of a
 ntiprotons invented by Simon van der Meer (Nobel Prize\, 1984)\, which was
  instrumental in the discovery of the W and Z Bosons at CERN in 1983 and t
 he ‘top’ quark at Fermilab years later. Stochastic Cooling reduces the
  random motion of the beam particles through granular sampling and correct
 ion of the beams phase-space structure\, thus bearing resemblance to a Max
 wells demon. The extension of Stochastic Cooling from the microwave regime
  up to optical frequencies and bandwidths\, samples and exploits a charged
  particle’s radiation reaction to affect its own phase space\, leading t
 o increases in the achievable cooling rates by three to four orders of mag
 nitude. I will report on the recent first experimental observation of this
  achievement in the IOTA ring by a Fermilab team. 
LOCATION:Ryle Seminar Room
END:VEVENT
END:VCALENDAR