Conveners
FCC-ee: Review: Optics & instrumentation
- John Seeman (SLAC)
FCC-ee: Review: Machine detector interface
- Katsunobu Oide (High Energy Accelerator Research Organization (JP))
FCC-ee: Review: Energy calibration & polarization
- Evgeny Levichev (Budker Institute of Nuclear Physics (RU))
FCC-ee: Review: Collective effects & top-up injection
- Maria Enrica Biagini
FCC-ee: Beam dynamics
- Bernhard Holzer (CERN)
FCC-ee: Review: injectors
- Yannis Papaphilippou (CERN)
For a demonstration of the performance of the X-ray interferometer, we propose a test at the long-range Imaging and Medical Beamline (IMBL) at the Australian Synchrotron. The Australian Synchrotron is a SR facility in the Australia, and it has a remarkable long range beamline for medical imaging. We can construct a Young’s type double slit interferometer in this beam line which will be...
The wide range of beam energies of the FCC-ee accelerator presents unique challenges to the interaction region. The lowest beam energy is 45.6 GeV (Z running) and the highest beam energy is 175 GeV (tt running). The lowest beam energy machine will have 1.45 A of beam current while the highest beam energy machine will have 6.6 mA. We present an update of the IR design with emphasis on the...
We discuss the problem of the Higher Order Modes heating in the Interaction Region of FFC ee. High current beams excite high frequency modes in IR due to very complicated geometry. We analyze the effect of geometrical transitions in IR on the excitation of HOMs. We suggest using a special water-cooled HOM absorber to capture the HOM power.
The goal of beam energy calibration is to define central mass energy at the interaction point (IP). The most accurate method is resonant depolarization technique with relative error of 1 ppm in single beam energy calibration. The whole procedure consists of measurement of spin precession frequency, and calculations of beam energy averaged over circumference, beam energy at IP and central mass...
FCC-ee is an e+e- circular collider designed to accelerate and collide counter-propagating beams of electrons and positrons. One of the fundamental aspects to be addressed in the design phase is the intensity limitation due to collective effects and the impedance budget. The machine design must be such that the global machine impedance as well as individual equipment do not pose any limits for...
In a storage ring, interaction between the fundamental impedance of the accelerating cavities and the beam determines such important longitudinal properties as bunch length, synchronous phase, synchrotron frequency, and others. This interaction is especially important in machines with large circumference and high stored beam current. In this work, steady-state beam loading effects will be...
The baseline of CEPC is a double ring configuration with the circumference of 100km. The booster has the same circumference as main collider ring in the same tunnel with injection energy of 10GeV. The exit energy of the LINAC for electron and positron is 10GeV. The Overall design of CEPC related to accelerator physics will be described in detail.
