Description
Chair: JuiChe Huang, NSRRC
A new project is underway to develop the successor to the current Australian Synchrotron. The new storage ring is proposed to be 450 m in circumference operating at 3 GeV. A preliminary 7BA lattice has been designed which utilises the higher-order achromat (HOA) scheme to suppress strong sextupole driving terms. The lattice has 24 sectors and a natural horizontal emittance of 50 pm-rad. This...
The online bunch-by-bunch position and phase monitor has been established by employing a high-speed analog-to-digital converter, meticulously synchronized with the accelerator's radio frequency. I/Q demodulation is utilized in the phase monitor to calculate the beam phase. To unravel the intricacies of bunch motion, independent component analysis has been employed, efficiently segregating the...
KEK LUCX facility is a normal conductive multi-bunch electron linear
accelerator devoted to develop an intense monochromatic source of laser-Compton
X-ray for monochromatic X-Ray imaging. In order to perform samples
tomography, stable laser-Compton X-ray beam is necessary. From accelerator side,
laser-Compton X-ray generation stability is basically defined by electron beam
parameters...
For demonstrating the beam focusing scheme required for linear colliders, the Accelerator Test Facility (ATF) at KEK is designed to focus an electron beam to 37 nm vertical size at the virtual interaction point (IP) utilizing the low emittance beam (vertical emittance: 12~pm.rad) generated in the damping ring. Because of the special focusing beam optics, even small angle changes of beam...
A new beam loss monitor (BLM) system has been installed and commissioned at the Australian Synchrotron. The new system consists of 28 beam loss detector (BLD) units and 14 signal processing BLM units distributed around the storage ring. Each detector unit consists of a plastic scintillator coupled to a photomultiplier tube. The signal processing units are Libera BLMs from Instrumentation...
The strive towards lower emittance in 4th generation light sources often restricts the dynamic aperture and lifetime, creating challenges for injection efficiency and commissioning. Once a circulating beam is established, BPM calibration, BBA and other optics corrections can be applied. However, with a limited DA, it can be difficult to establish a circulating beam at the start of...
A 4th Generation Light Source is being built in Ochang, Korea (Korea-4GSR project). It can produce synchrotron light that is 100 to 1000 times brighter than that of the 3rd generation source like PLS-II in the Pohang Accelerator Laboratory (PAL). The Korea-4GSR is designed to have a circumference of 800 meters to implement a Diffraction-Limited storage ring. This size is three times that of...
A project to develop a linac-based MIR/THz free-electron laser (FEL) light source and experimental stations for spectroscopic and ultrafast interaction applications is underway at Chiang Mai University in Thailand. The accelerator system serving as the electron beam injector is an existing system, albeit with modifications to accommodate two newly developed beamlines for MIR/THz FEL....
Synchrotron radiation induced high yields of gas-desorption and photoelectrons from the vacuum beam ducts of large accelerators results in huge impacts of shortening the beam lifetime and beam instabilities from the trapped ions or electron cloud. Inspection of surface cleanness and coated materials on top surface layers of beam ducts by directly measuring the photon stimulated desorption...
We have developed a periodic Cherenkov radiator to obtain narrow band Cherenkov radiation. Since the radiation spectrum of Cherenkov diffraction radiation from the radiator contains strong higher order harmonics, the bunch form factor of the electron beam is expected to be deduced precisely, so that the very short bunch less than 10 fs (such as the laser wakefield accelerated beam) is able to...
