Department of PhysicsJohn Anderson Research Colloquia

Wednesday's at 3.00pm (unless otherwise stated) 

Colloquia will usually be held in JA3.14
John Anderson Building 
107 Rottenrow, Glasgow

Coffee and Tea served at 4.00 pm.

All Welcome

Coordinated with the Colloquia at the Department of Physics and Astronomy of the University of Glasgow. (They may have donuts but we have free chocolate covered biscuits and coffee!)

Colloquia Schedule 2022-2023

  • 22/06/22 - Swapan Chattopadhyay (Visiting Professor, University of Strathclyde) *
  • 20/07/22 - Fabien Massabuau (University of Strathclyde)
  • 27/07/22 - Alessandro Rossi (University of Strathclyde)
  • 03/08/22 - Peter Kirton (University of Strathclyde)
  • 31/08/22 - Kali Wilson (University of Strathclyde)
  • 28/09/22 - Konstantinos Lagoudakis (University of Strathclyde)

* Note: Outside of regular schedule.

Optical Stochastic Cooling of Electrons

Swapan Chattopadhyay (University of Strathclyde) 22nd June 2022, 3pm, JA3.14 

Stochastic phase space cooling using microwave techniques in the GHz frequency range have been employed historically in particle colliders, leading to ground-breaking discoveries. ‘Cooling’ increases the likelihood of observing rare physics events. The first important advance, conceptual and technological, in this area was stochastic cooling of anti-matter (e. g. ‘antiprotons’) 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 the ‘top’ quark at Fermilab years later. Stochastic Cooling reduces the random motion of the beam particles through granular sampling and correction of the beams phase-space structure, thus resembling a ‘Maxwell's 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 to increases in the achievable cooling rates by three to four orders of magnitude. I will report on the recent first experimental observation of this achievement in the IOTA ring by a Fermilab team.