Ttile: Muon Colliders 

Speaker：R.B.Palmer (BNL) 

Moderator: Prof.TANG Jingyu

Time: 10AM, Novemver 11,2016

Place:Room C305, IHEP Main Building

Abstract: 

Muon colliders, like electron colliders, and in contrast to hadron colliders, offer the potential of physics with well-defined energies and initial states, allowing precision studies at energies up to the center of mass energy of the collider. But because muons are so much heavier than electrons, muons make little synchrotron radiation and can be accelerated and collide in relatively small circular rings, whereas high energy electron colliders must be linear and long. 

Muon collider designs will be discussed and compared with those of electron colliders such as the 3-TeV CERN CLIC concept. Significant advantages of muons over electrons are noted. 

The state of muon collider R&D will be reviewed and the US decision to end these studies discussed. In view of magnitude of the needed work and the falling level of US HEP funding, the decision, though painful, was not unreasonable. 

About the speaker： 

Prof. Robert B. Palmer is a senior physicist at BNL, also a member of National Academy of Sciences. He was born in UK and now US citizen. He earned PhD in high energy physics in Imperial College, London in 1960, has been working at BNL since then, but with sabbatical leaves at CERN and SLAC. He has played important roles in many HEP projects, including ISABELLE, CBA, ATF, SSC, and MAP. He was one of the principal propellents on neutrino factory and muon collider concept and development, and contributed to many experimental methods such as bubble chambers, superconducting magnets, inverse free electron laser, momentum stochastic cooling, etc. He has also served the HEP and accelerator communities for many years.