Conveners
Systems and Operations: Systems and Operations (1/2)
- Toshihiro MATSUMOTO (KEK, Accel)
Systems and Operations: Systems and Operations (2/2)
- Alessandro Ratti (Stanford Linear Accelerator Center)
The Electron-Ion Collider (EIC), to be constructed at Brookhaven National Laboratory (BNL), is a roughly 10 year project to design and construct a facility to collide polarized high energy electron beams with polarized proton and heavy ion beams at center of mass energies from 20 GeV to 140 GeV and luminosity up to 10^34 cm^(-2s-1). The project is a partnership between BNL and the Thomas...
A new injector linac was constructed for the New SUBARU, a 1.5 GeV synchrotron radiation facility, at SPring-8.
The accelerating frequencies used at the new linac are 238, 476, 2856 and 5712 MHz.
The required accuracy is, for example, 8e-4 at 238 MHz for amplitude and 0.2 degree at 476 MHz for phase.
Also, the master trigger of the linac must be synchronized with both the aimed bucket...
Besides the realization of the LLRF systems for the new heavy-ion synchrotron SIS100 and the storage rings CR and HESR, the FAIR project at GSI also includes an upgrade of the LLRF systems of the existing accelerator rings such as SIS18 and ESR. Although each accelerator and each type of RF system has its own specific requirements, the basic underlying concept and topology is the same for all...
The Advanced Photon Source Upgrade (APS-U) will replace the more than 25 year old storage ring with a multibend achromat lattice. To alleviate beam lifetime and emittance concerns, the new storage ring will include a passive superconducting bunch-lengthening cavity whose voltage will be regulated via slow cavity tuning control. The reduction of the synchrotron tune will make the beam more...
The LIGHT (Linac for Image-Guided Hadron Therapy) linac is designed to produce proton beams up to 230 MeV for cancer therapy. The machine consists of three different kinds of accelerators: RFQ (Radio-Frequency Quadrupole), SCDTL (Side Coupled Drift Tube Linac) and CCL (Coupled Cavity Linac). These accelerating structures operate with RF power at 750 MHz (RFQ) and 3 GHz (SCDTL, CCL) which is...
For the future intensity increase of the fixed-target beams in the CERN accelerator complex, a barrier bucket scheme has been developed to reduce the beam loss during the 5-turn extraction from the PS towards the SPS, the so-called Multi-Turn Extraction. The low-level RF system must synchronize the phase of the barrier with the PS extraction and SPS injection kickers to minimize the number of...
The European XFEL (EuXFEL) is a Free Electron Laser in the X-ray range for users. Its high availability is one of the key aspects of the machine and, in 2022, it entered in the sixth year of operation. The EuXFEL linac is based on the TESLA superconducting RF technology, operating at 1.3 GHz with a repetition rate of 10 Hz. The LLRF system is based on the MicroTCA standard and relies on a high...
The Super Proton Synchrotron (SPS) Low Level RF (LLRF) has been completely upgraded during the CERN long shutdown (LS2, 2019-2020). The novel architecture of the LLRF and the hardware used will be presented.
The architecture is based on a White-Rabbit (WR) network and fast GigaBit links, and all the electronics is using fixed sampling and processing clocks. The WR network is used for the...
The Facility for Rare Isotope Beams (FRIB) was fully commissioned by the end of 2021 and opened for full user operation in May 2022. In this paper, we give an update of the LLRF activities at FRIB for the past few years, including commissioning of the linac segments 2 and 3, and the performance achieved. As the facility transitioned from commissioning to operation, effort has been devoted to...
