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Thibaut Lefevre (CERN)20/06/2023, 08:45
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Raymond Veness (CERN)20/06/2023, 09:00
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Stephane Burger (CERN)20/06/2023, 09:20
Screen based instruments are commonly used in particle accelerators for beam steering, observation and size measurements. After a short introduction to this type of instrumentation deployed all along the accelerator chain at CERN, the presentation will focus on the experimental beam tests recently done on new type of screens made of nanotube material: CNT and BNNT. This was performed on the...
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Louise Olivia Jorat (CERN)20/06/2023, 09:40
Because of the increased radioactivity in LSS2 (SPS slow extraction towards north area), new low-Z materials were studied for use in electrostatic septa. Carbon Nano Tubes wire (CNT) was the first candidate to be studied. A test facility was built to assess the behaviour of the CNT wires in high field conditions.
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Alexandre Mariet (CERN)20/06/2023, 10:00
Wire-scanners are instruments frequently used in particle accelerators for the measurement of the transverse profile. The challenge of increasing brightness necessitates innovative solutions. Carbon fibers currently used will not respond to the new boundaries of future projects. Carbon nanotube (CNT) fibers could offer new materials with these materials in wire-scanner construction enhances...
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Raymond Veness (CERN)20/06/2023, 10:20
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Dr Simon Thomas Stegemann (CERN)20/06/2023, 10:50
CERN-ISOLDE is a facility dedicated to the production of radioactive ion beams (RIBs) for physics research.
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The quality and quantity of available RIBs is governed by the choice of target materials and their microstructural properties.
In this contribution we highlight the potential of nanomaterials and carbon nanotubes in target material development for more efficient isotope extraction and... -
Nicola Solieri (CERN)20/06/2023, 11:15
The presentation will cover the use of graphitic materials in beam intercepting devices.
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Particular focus will be given to the LHC external dump (TDE), characterising the different materials that are employed in the dump and those that are under study for the HL-LHC upgrade.
A detailed breakdown of the R&D program for this application will cover the simulation and experimental techniques as... -
Mariusz Sapinski (Paul Scherrer Institute (CH))20/06/2023, 11:40
Thin targets are used in high-power accelerators because of low energy deposited by the beam and fast cooling.
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Extreme beams test the limits to those structures. A series of damage tests done on CERN machines on carbon fiber targets used in wire scanners is presented. Damage events observed on PSI machines on carbon fibers and molybdenum wires are discussed. -
Thierry Stora (CERN)20/06/2023, 12:05
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Davide Mattia (Bath)20/06/2023, 13:50
The presentation will provide an overview of the 1D and 2D nanomaterials synthesis capabilities at the University of Bath and some initial ideas to develop carbon nanotube-based ropes for CERN’s wire scanner application.
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Ilkka Varjos (Canatu)20/06/2023, 14:10
Canatu’s carbon nanotube membrane is the world’s thinnest and strongest CNT membrane, exhibiting high transmittance (>97%T at EUV/X-ray), low flare and high thermal stability (>1500°C). Membrane made with Canatu carbon nanotubes have extraordinary mechanical, thermal and optical properties, making them ideal for extreme conditions, such as EUV pellicles in the semiconductor industry and X-ray...
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Hisashi Sugime (Kindai)20/06/2023, 14:35
A carbon nanotube forest with a length of 14 cm grew with an average growth rate of 1.5 μm s−1 and a growth lifetime of 26 h. Several key factors to realize this unprecedented long growth such as catalyst conditions, growth conditions in chemical vapor deposition, and reactor system were clarified. The long carbon nanotube forest enabled macroscopic measurements of the tensile and electrical...
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Dmitri Tsentalovich (Dexmat)20/06/2023, 15:00
DEXMAT produces Galvorn CNT materials using a proprietary fluid phase production method. This method produces CNTF in which the CNT molecules are highly aligned along the fiber axis, resulting in high strength, electrical conductivity, and thermal conductivity along the axis of the fiber. Compared to a copper wire with the same diameter, a CNTF produced by this method has 12 times higher...
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Dr Stefano Sgobba (CERN)20/06/2023, 15:25
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Jean-Yves Rauch (Université de Franche-Comté)20/06/2023, 15:55
As part of a study on the properties of carbon nanotubes, we are going to briefly present the micro-Robotex station, which consists of a Zeiss Auriga 60 scanning electron microscope, on which are installed a Focused Ion Beam-FIB from Orsay Physics, a Gas Injection System-GIS from Oxford Instrument, and a robot with 6 degrees of freedom installed inside the vacuum chamber. By manufacturing...
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Ana Teresa Perez Fontenla (CERN)20/06/2023, 16:25
The microscopy team at CERN is devoted to providing material characterization including topographical imaging, morphology, phase identification and chemical analysis through the utilization of Scanning Electron Microscopy (SEM), Focused Ion Beam (FIB)-SEM and X-ray Diffraction (XRD).
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Material characterization is carried out on a wide range of materials with emphasis on metals and alloys,... -
Michel Devel (SupMicroTech)20/06/2023, 16:55
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Anastasiia Mikhalchan (IMDEA)21/06/2023, 09:00
Floating catalyst CVD is the universal route to grow 1D nanoparticles, such as nanotubes and nanowires, in the gas phase and collect them in the form of freestanding nanotextiles, non-woven mats, and fibres. Due to high aspect ratio of constituent nanoparticles and network structure, macromaterials of CNTs exhibit high mechanical and electrical properties coupled with high flexibility and...
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Ignacio Aviles Santillana (CERN), Oscar Sacristan De Frutos (CERN)21/06/2023, 09:40
MME Mechanical and Materials laboratories undertake thermophysical and mechanical measurements for a wide range of components and devices at CERN, and uses state-of-the-art techniques to provide the necessary inputs for the analyses, and validate them experimentally. Thus, these laboratories constitute a crucial resource in supporting critical equipment throughout its lifecycle, from...
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Alexander Lunt (University of Bath (GB))21/06/2023, 10:00
The increased luminosity of future particle accelerators will require improvements to beam instrumentation techniques and materials. A promising route for future wire scanners is the use of braided carbon nanotubes which have an exceptional combination of mechanical and thermal characteristics. This study outlines initial investigations into the effects of braiding on mechanical performance...
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Dr Marco Calviani (CERN)21/06/2023, 10:20
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Jean-Emmanuel Groetz (Chrono-Environnement)21/06/2023, 10:50
Calculation of the energy loss of an incident beam in a thin wire is the first step if we want to assess the thermal behaviour of the wire during the scan process. We will present these calculations with the FLUKA code and the choice of key parameters to get realistic results. Simulations at specific energies for SPS (450 GeV), LHC (7 TeV) and FCC (50 TeV) were performed with different...
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Manon Boucard (EPFL - Ecole Polytechnique Federale Lausanne (CH))21/06/2023, 11:10
Low-density materials as targets for wire scanners demonstrate favorable thermal behavior. Simulations with the PyTT package are carried out to study the secondary emission yield and the maximum temperature for carbon nanotube and carbon fibre wire for the PSI Main Ring Cyclotron and HL-LHC beams. These results show that with low-density materials, the maximum temperature reached is lower due...
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Federico Roncarolo (CERN)21/06/2023, 11:30
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Thierry Stora (CERN)
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Stefano Sgobba (CERN)
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