Conveners
Afternoon session: Test Stands
- Wencheng Fang
Afternoon session: Breakdown and theory I
- Evgenya Simakov (LANL)
Afternoon session: Breakdown and theory II
- Matteo Volpi (The University of Melbourne)
Afternoon session: Cheese & Wine
- There are no conveners in this block
The TEX facility has been commissioned for high-power testing to characterize radio frequency structures and components and to validate them for operation on future particle accelerators for medical, industrial, and research applications. To this end, TEX is directly involved in the LNF’s leading project EuPRAXIA@SPARC_Lab. A brief description of the facility commissioning, its status, and...
RadiaBeam has developed C-band testing infrastructure to support a diverse array of structure and beam testing programs. The core capabilities revolve around a pair of E37212 Canon klystrons driven by K300 Scandinova modulators delivering 1.2us, 100Hz operation with peak RF powers of 25MW and 50MW. The infrastructure includes multiple phase shifter power splitters and high directivity...
The baseline design of the compact linear collider (CLIC) requires high gradient accelerating structures operating at 12 GHz with accelerating gradients of 100 MV/m. To demonstrate the feasibility and optimise the performance of these structures several x-band test facilities, x-Box 1, 2 and 3 have been operating at CERN.
A new test facility will come online at the x-band laboratory for...
A summary of the relevant activities in the CERN X-band RF facilities related to high gradient and high efficiency RF
The design and manufacturing of X-band, high-gradient structures have steadily developed in recent times beyond their original use in high-energy physics. After years of development and collaborations, the initial phase of validation regarding the viability of the machines and their operation has moved to focus on a more practical area. This new area focuses on manufacturing techniques,...
There are various hypotheses for vacuum breakdown trigger mechanisms in normal-conducting accelerating structures. It has been experimentally turned out that the dominant trigger of RF breakdowns in normal-conducting UHF CW cavities is a hot micro-particle with a high sublimation point [Phys. Rev. Accel. Beams 21, 122002 (2018)], later named a "fireball" by this presenter. In principle, this...
After fabrication, high-gradient structures need to be conditioned to provide high gradients of 100 MV/m, and sustain even higher gradients at the copper surfaces, while achieving a breakdown rate below $3*10^{-7}$ BD/pulse. Estimating the energy unaccounted for during a breakdown may be important in order to avoid damage to the structure as well as to understand the breakdown process itself....
RF-Track is a CERN-developed particle tracking code that can simulate any particle species' acceleration and tracking. RF-Track tracks particles in time or in space through field maps and conventional elements and considers a large set of single-particle and collective effects: space-charge, beam-beam, short- and long-range wakefield effects, synchrotron radiation emission, multiple Coulomb...
Dielectric Assist Accelerating (DAA) structures based on ultralow-loss ceramic are being studied as an alternative to conventional disk-loaded copper cavities. This accelerating structure consists of dielectric disks with irises arranged periodically in metallic structures working under the TM02$-\pi$ mode.
Here, the numerical design of an S-band DAA structure for low beta particles, such as...
