Conveners
Special Technologies: Beam vacuum system conceptual design I (review)
- Paolo Chiggiato (CERN)
Special Technologies: Beam Vacuum System Conceptual Design II (review)
- Francis Perez (ALBA Synchrotron - CELLS)
Special Technologies: Injection & extraction I
- Peter Levai (Hungarian Academy of Sciences (HU))
Special Technologies: Injection & extraction II
- Ursula Helga Van Rienen
Special Technologies: Beam stoppers, collimators and dumps (review)
- Brennan Goddard (CERN)
Special Technologies: Electronics & instrumentation (review)
- Federico Ravotti (CERN)
Special Technologies: Development of new manufacturing technologies
- Said Atieh (CERN)
Special Technologies: Machine protection, circuit and powering
- Jan Uythoven (CERN)
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Francis Perez (ALBA Synchrotron - CELLS)10/04/2018, 08:30EuroCirCol
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Luis Antonio Gonzalez Gomez (INFN e Laboratori Nazionali di Frascati (IT))10/04/2018, 08:50EuroCirCol
The technical design concept for the FCC-hh cryogenic beam vacuum system was developed based on the constraints that emerge from the arc design requirements. Within this framework, a BEam Screen Testbench Experiment (BESTEX) measurement setup was designed with the goal of determining the photodesorption yield, synchrotron radiation heat loads and photo electron generation inside 3 different...
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Roberto Kersevan (CERN)10/04/2018, 09:10EuroCirCol
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Roberto Cimino (LNF-INFN)10/04/2018, 09:30EuroCirCol
In FCC-hh one of the most challenging issue will be the control of all possible instabilities that could occur. In order to do so, all vacuum vessel inner surfaces need to be characterised in great details. Among others properties, their Secondary Electron Yield (SEY), Photo Yield (PY), Reflectivity (R) and their capability to adsorb residual gas molecules and maintain them absorbed during...
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Joffre Gutierrez (ICMAB)10/04/2018, 10:30EuroCirCol
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Alessandro Leveratto (CNR-SPIN)10/04/2018, 10:45EuroCirCol
HTS coatings have recently been proposed for beam impedance mitigation in the FCC beam screen. One of the candidate materials that can still work under the exceptional conditions of 50K, 16T, above 10^5 A/cm^2 is the Tl cuprate TlSr2Ca2Cu3Ox (Tl-1223) that with a Tc of about 120 K, very high Hc2 and Hirr, and moderate anisotropy is a promising material for such application. This possibility is...
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Dr Oleg Malyshev (STFC Daresbury Laboratory)10/04/2018, 11:00EuroCirCol
Non-evaporable getter coating of vacuum chamber of particle accelerators was invented approximately 20 year ago by C. Benvenuti at CERN. This technology have already demonstrated its benefits an many machines: ESRF, Elettra, Diamond, Soleil, LHC, MAX-IV, etc. The NEG coatings are very effective vacuum solution, the UHV/XHV conditions could be reached in fully coated vacuum chamber of particle...
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Cedric Garion (CERN)10/04/2018, 11:20EuroCirCol
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Raffaele G. Agostino (University of Calabria)10/04/2018, 11:40EuroCirCol
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Dr Daniel Barna (Hungarian Academy of Sciences (HU))11/04/2018, 08:30STP
A bulk superconducting magnetic shield can create the sharp transition between the high-field and no-field zones of septum magnets. This technique promises to reach significantly higher fields than what is possible with current technology, without compromising compactness. The experimental results with three different shield materials will be presented and compared. Simulation results...
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Alejandro Sanz Ull (Eindhoven Technical University (NL))11/04/2018, 08:50STP
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Kei SUGITA (GSI)11/04/2018, 09:10STP
Challenging requirements are set for the FCC extraction septum magnets.
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A scaled up LHC-like beam dump system or a massless architecture are not applicable in terms of maximum field, space reservation and power consumption.
The truncated cosine-theta septa configuration with a target field of 4 T has been proposed to address these requirements maintaining the reliability and availability of... -
Mike Barnes (CERN)11/04/2018, 09:30STP
Fast-switching, high voltage, pulse generator topologies, such as the semiconductor based Marx generator, are being actively pursued for possible replacement of thyratrons and PFLs in existing kicker systems. Such topologies are required for the FCC injection kicker system. In this talk the design of a prototype solid state Marx generator, using new SiC MOSFET devices, is presented. The layout...
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Mike Barnes (CERN)11/04/2018, 10:30STP
A fast, highly reliable, injection kicker system is required for FCC injection: the system must not limit accelerator performance. Important considerations in the design of such a system are machine protection constraints, collider filling factor and hence rise and fall times of the kicker magnet field. Fast rise time kicker magnets are generally ferrite loaded transmission line type magnets...
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Nicolas Magnin (CERN)11/04/2018, 10:50STP
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David Woog (CERN)11/04/2018, 11:10STP
In order to achieve a highly reliable and modular kicker system for the FCC injection, a semiconductor-based inductive adder (IA) pulse generator is being developed. To achieve the required high voltage and current, the IA consists of series-connected 1:1 pulse transformers (layers). The appropriate number of secondary windings are connected in series to generate the required voltage at the...
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Alexander Ryazanov11/04/2018, 11:30STP
The effect of irradiation of fast particles on the radiation resistance and behavior of collimators and superconductor materials for magnets is very important and serious task for Future Circular Collider (FCC). The energies of fast protons in FCC will be up to 100 TeV and it is much higher comparing with LHC proton beam, where energy is up to 7 TeV. Other very important point for fast...
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Armen Apyan12/04/2018, 08:30STP
High energy upgrade is foreseen for LHC in the future. At the High-Energy LHC (HE-LHC), the proton beam energy is increased to an upgrade value of 13.5 TeV. The dedicated beam dump per ring must absorb 1.3 GJ energy carried by the proton beam and concentrated in the small region around the beam axis. Beam dilution system is foreseen in order to reduce maximum deposited energy density to an...
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Elisabeth Renner (Vienna University of Technology (AT))12/04/2018, 08:50STP
To safely and reliably extract the high energy FCC-hh beam is a challenge for the extraction and dilution kicker system and has a major impact on the design. A high segmentation is proposed for both the extraction and the dilution kicker magnets to reduce the impact of one erratic module and to enable operation with less than nominal kick strength. The main challenge for the extraction kicker...
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Anton Lechner (CERN)12/04/2018, 09:10STP
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Angelo Infantino (CERN - EN/STI-FDA)12/04/2018, 10:30STP
FCC will require a significant amount of electronic components in the accelerator tunnel and in the side galleries to control and monitor different systems, e.g. power converters, QPS, interlocks, etc. An โa prioriโ evaluation of the radiation environment, the technology that would be required, the failure rate and the possible mitigation actions become strategic for the design, the future...
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Ruben Garcia Alia (CERN)12/04/2018, 10:48STP
Radiation effects on electronics pose a serious threat to the operation of a high-energy hadron accelerator such as the present LHC and future FCC-hh machines. In particular, Single Event Effects (SEEs) are the result of the interaction of a single particle with the sensitive volume of a component that compromise its operation and can even result in its permanent destruction in the case of...
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Giulio Borghello (Universita degli Studi di Udine (IT))12/04/2018, 11:06STP
Particle detectors for high-energy physics applications can contain billions of MOS transistors, each of them prone to possible radiation-induced failures. The Future Circular Collider represents an unprecedented challenge to the radiation hardness of CMOS technology, with an estimated total ionizing dose (TID) from 10 to 500 times higher than the already very high TID expected to be reached...
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Georgi Gorine (EPFL - Ecole Polytechnique Federale Lausanne (CH))12/04/2018, 11:24STP
Current solid-state devices for radiation measurement are not capable of integrating the radiation levels expected in certain sectors of the FCC tunnel (tens of KGy with >1015 particles/cm2) and even more in the experiments of the FCC (tens of MGy, with >1017 particles/cm2). In order to overcome these measurement limitations, we have focused our research on metal nanolayers, as a solution for...
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Federico Roncarolo (CERN)12/04/2018, 11:42STP
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Cedric Garion (CERN)12/04/2018, 13:30STP
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Toms Torims (Riga Technical University)12/04/2018, 13:50STP
Additive manufacturing technology and its applications steadily grew from the niche product to the multipurpose manufacturing solution, which today is being applied in many fields of mechanical engineering and machine building technologies. In particular laser cladding proved its high efficiency, precision and economic benefits in repair sectors of aerospace, automotive and ship repair...
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Mario Di Castro (CERN)12/04/2018, 14:10STP
Intelligent robotic systems are becoming essential for inspection and measurements in harsh environments, such as the European Organization for Nuclear Research accelerators complex. Aiming at increasing safety and machine availability, robots can help to perform repetitive or dangerous tasks, reducing the risk of personnel exposure to radiation and the time for interventions. In this work, a...
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Francois Millet12/04/2018, 14:30STP
The preliminary conceptual design of FCC-hh refrigerators was proposed in the framework of an international collaboration and confirmed through the industrial engineering studies undergoing with the cryogenic world-leader industries. Proposed cryoplants (10 cooling units of 100kW equivalent at 4.5K) are based on advanced refrigeration process cycles with very large capacity precooling stages...
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Marco Prioli (CERN)12/04/2018, 15:30STP
For the FCC-hh study, 100 TeV is the target center of mass energy. This ambitious target can be reached by means of a 16 T dipole field and a 100 km long accelerator circumference. The target performances of dipole magnets, together with the unprecedented size of the accelerator, poses a number of challenges as, among others, machine integration and protection.
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In particular, long strings of... -
Tomasz Podzorny (CERN)12/04/2018, 15:50STP
Quench protection systems are an indispensable asset for the safety and integrity of the components of the FCC superconducting circuits. This contribution focuses on the quench detection (QDS) system. A design study for the QDS proposes main processing units located outside the FCC tunnel and interconnected with high-speed data links to intelligent sensors with reduced complexity and hence...
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Vasilios Karaventzas (CERN)12/04/2018, 16:05STP
An alternative energy extraction system of the FCC superconducting circuits capable of energy recuperation is proposed. This system is suggested to comprise a converter module, which by controlling the extraction voltage across the magnet chain will determine the energy extracted and transferred to a temporary storage unit, before being re-used e.g. for the following energy ramp. The...
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Yuancun Nie (CERN)12/04/2018, 16:20STP
With a machine protection system similar to the Large Hadron Collider (LHC), the Future Circular Collider (FCC) would require up to three turnsโ to dump the beam synchronously after detection of a failure. The reaction time of the machine protection system can be reduced by several strategies. The time for failure detection can become shorter with faster hardware and beam monitors, e.g. using...
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Francisco Rafael Blanquez Delgado (CERN)12/04/2018, 16:40STP
For the success of the FCC, one of the key aspects is the energy efficiency. In particular, the magnet powering could represent an enormous power consumption from the AC network, therefore achieving an optimised and efficient design for all power converters is a primary concern.
In this presentation, the main concepts and requirements for the power converters for the dipole magnets of the FCC...
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Francesco Cerutti (CERN)STP
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Teresa Puig (ICMAB)EuroCirCol
The baseline design of the FCC-hh beam screen is based on an octagonal shaped stainless steel tube coated in its interior with copper. The surface impedance of the beam screen has a strong impact on the beam stability. In the foreseen operating temperature range between 40 K and 60 K the intended coating might not guarantee an impedance sufficiently low for a stable beam. This motivates the...
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