Conveners
Technology R&D
- Bernhard Auchmann (PSI/CERN)
Technology R&D: SRF directions for R&D
- Ursula Helga Van Rienen
Technology R&D: SRF Technology (I)
- Oleg Malyshev (UKRI/STFC Daresbury Laboratory)
Technology R&D: SRF Technology (II)
- Anne-Marie Valente-Feliciano
Technology R&D
- Toms Torims (Riga Technical University (LV))
Technology R&D
- m Koratzinos (Paul Scherrer Institute (CH))
The inter-beam distance in the collider arcs has recently been increased to accommodate the latest design of the SR absorbers in the dipoles. This has led to a modification of the magnet designs, taking advantage of the larger distance between apertures to try minimizing both the aperture coupling in the quadrupoles, and the saturation in the sextupoles.
The presentation will summarize the...
The FCC-ee HTS4 project studies the possibility of replacing all (warm) short straight sections of FCC-ee with superconducting ones. There are about 2900 short straight sections in the arcs of FCC-ee housing arc quadrupoles, sextupoles and various corrector magnets. In the conceptual design report design, all these magnets are normal-conducting with an important footprint in the overall...
From the time of the Brookhaven Summer Study in the summer of 1968 to the present day, Brookhaven National Laboratory’s (BNL’s) Magnet Division has developed advanced technology in support of science and US industry. Magnet Division is a world class magnet development facility which can provide full solutions from modeling, design, robust magnet engineering, and state of the art magnet...
As FCC-ee reconfigures to reach higher and higher energies, many 800 MHz SRF cavity cryomodules are planned for installation in the tunnel. In this presentation, we discuss some R&D activities at Fermilab related to these cryomodules. We present relevant R&D towards achieving high Q0 in cavities in this frequency range and at operating gradients relevant for the FCC-ee specification, including...
The study and optimisation of manufacturing processes for copper substrates of Nb-coated cavities is a subject of renewed interest, due to the challenging demands on SRF performance for the Future Circular Collider (FCC).
This contribution will highlight related activities, currently being performed at CERN, namely on the R&D and optimization of welding processes, and on the production of...
CERN developed significant know-how in the design and fabrication of niobium-coated copper superconducting radiofrequency (SRF) cavities for accelerators, from LEP to the LHC and HIE-ISOLDE. While 400MHz Nb-coated Cu cavities are being considered for the leptonic machine variants of the FCC, further optimization is required to comply with the established performance targets.
The work...
The Slotted Waveguide ELLiptical (SWELL) cavity is a novel concept of superconducting cavity proposed as an alternative option for the FCCee RF system. The presentation will give an update on the fabrication of the 1.3 GHz SWELL prototype used as a first step of the feasibility demonstration. The mechanical design, the precise machining results and the blank assembly tests of the cavity...
The cooling concept of the SWELL prototype is based on a self-sustained convection loop (open thermosyphon) in He I saturated conditions. The estimated heat load for one quarter of the SWELL 1.3 GHz prototype is 17.5 W. The 30 mm-diameter cooling tube has a length of 131 mm, which corresponds to the length of the SWELL main copper body. In the vertical SRF test arrangement, a 10 mm x 8 mm...
In the past year, infrastructure and integration studies have led to a new choice of the two straight sections dedicated to the FCC-ee SRF system. Point H is now entirely dedicated to the collider while Point L integrates the booster. This new configuration offers a more convenient arrangement of the cryomodules which are now all placed at ground level for the collider and at a higher level...
RF requirements for projects such as FCC impose to keep the manufacturing of SRF objects under extremely strict process control to prevent any performance degradation due to surface contamination.
In this regard, thin film on copper technology is particularly demanding.
Current SRF facilities at CERN cannot meet these requirements, increasing the risk of defects and of high rejection...
This talk will give a summary of the studies performed during the first year of the FCC-ee arc half-cell mock-up project. Details of the design of the interfaces between the main systems, their supporting and placement principles, will be described. The talk will also review the task timeline and milestones. Finally, the current status of the configuration of the half-cell mock-up will be showed.
To efficiently and reliably enable the operation of future large-scale research facilities, it is indispensable to conduct multi-area and multi-disciplinary research, taking into account in the facility design not only scientific aspects, but also energy-related challenges. At the Karlsruhe Institute of Technology (KIT), the innovative research laboratory KITTEN has recently been developed,...
In the frame of FCC-ee, where the radiation level and the large scale of the facility impose remote activities and cost optimization, the deployment of dynamic models of physical mechanical systems has great potential.
Ability to provide real-time feedback on the system’s state and to perform predictive modelling can contribute -among others- to diagnostic optimization, reduction of number of...
The FCC-ee will be installed in a 91 km long tunnel at around 200 m underground. The size of the project, the tunnel configuration and stability, the number of components to align and the alignment tolerances raise unprecedented challenges. From the manufacturing of the components to the relative alignment of these components during technical shutdowns, all the alignment steps are impacted. ...
To reach integrated luminosity goals, the FCC-ee must be operational for minimum 80% of the scheduled 185 physics days each year. For comparison, the LHC achieved 77% in Run 2, 2016-2018. There are additional challenges in operation and maintenance of the FCC-ee due to its scale, complexity and ambitious technical objectives. Availability is therefore a significant risk to physics...
The fourth industrial revolution, the current trend of automation and data interconnection in industrial technologies, is becoming an essential tool to boost maintenance and availability for space applications, warehouse logistics, particle accelerators and for harsh environments in general. The main pillars of Industry 4.0 are Internet of Things (IoT), Wireless Sensors, Cloud Computing,...
The understanding of beam-beam effects, drivers of the FCC-ee parameter design in several aspects, require sophisticated and high-performance numerical simulations. The self-consistent study of the interplay of several nonlinear dynamical phenomena resulting from collisions in the machine is key to accurately assess its potential performance. Although current simulation frameworks can address...
