arXiv subjects
Publications and source records attributed to I. Endo.
We study a method of laser-Compton cooling of electron beams for future linear colliders. Using a Monte Carlo code, we evaluate the effects of the laser-electron interaction for transverse cooling. The optics with and without chromatic correction for the cooling are examined. The laser-Compton cooling for JLC/NLC at $E_0=2$ GeV is considered.
The Relativistic Electron Facility for Education and Research (REFER) at Hiroshima University accepts a 150 MeV electron beam from a microtron, the injector to the 700 MeV storage ring of the Hiroshima Synchrotron Research Center, and keep it circulating for 2.5ms without a RF acceleration. It acts as a beam stretcher and has been used for the following researches: 1) X-ray generation from an internal multiple foil crystalline target due to the parametric X-radiation (PXR) and the resonant transition radiation (RTR). 2) Laser backward Compton scattering. 3) Coherent pair creation from Si crystal by 150 MeV bremsstrahlung. 4) Study of the Ter-Mikaelian effect in the low energy part of the bremsstrahlung in an extracted electron line. 5) A novel scheme of beam stabilization by the induction coil. This paper reports the experimental results and the current status of the REFER electron ring.
We present methods to measure the beam polarizations and the luminosity of $γγ$ colliders at TeV energy scale. The beam polarizations of a $γγ$ collider can easily be monitored by comparing the numbers of events of the processes $γγ$ $\rightarrow$ $\ell^+ \ell^-$ and $γγ$ $\rightarrow$ $W^+ W^-$, where $\ell$ means $e$ or $μ$. The luminosity of a $γγ$ collider is also measurable by the event rate of $W$ boson pair productions and the light lepton pair productions.