A5064292725- Superconducting Materials and Applications
- Particle accelerators and beam dynamics
- Particle Accelerators and Free-Electron Lasers
- Radiation Therapy and Dosimetry
- Fusion materials and technologies
- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- Thermal Analysis in Power Transmission
- Magnetic confinement fusion research
- Neutrino Physics Research
- Superconductivity in MgB2 and Alloys
- Magnetic Field Sensors Techniques
- Spacecraft and Cryogenic Technologies
- Muon and positron interactions and applications
- Electromagnetic Launch and Propulsion Technology
- Physics of Superconductivity and Magnetism
- Atomic and Subatomic Physics Research
- HVDC Systems and Fault Protection
- Radiation Detection and Scintillator Technologies
- Scientific Measurement and Uncertainty Evaluation
- Gyrotron and Vacuum Electronics Research
- Computational Physics and Python Applications
- Electromagnetic Simulation and Numerical Methods
- Magnetic Properties and Applications
- Particle Detector Development and Performance
Paul Scherrer Institute
2016-2025
Weatherford College
2022
Vifor Pharma (Switzerland)
2022
University of Geneva
2014-2019
École Polytechnique Fédérale de Lausanne
2011-2014
University of Bologna
2010
The electric dipole moments~(EDM) of fundamental particles inherently violate parity~(P) and time-reversal~(T) symmetries. By virtue the CPT theorem in quantum field theory, latter also implies violation combined charge-conjugation parity~(CP) symmetry. We aim to measure EDM muon using frozen-spin technique within a compact storage trap. This method exploits high effective field, \$E \approx 165\$ MV/m, experienced rest frame with momentum about 23 MeV/c when it passes through solenoidal...
This letter of intent proposes an experiment to search for electric dipole moment the muon based on frozen-spin technique. We intend exploit high field, $E=1{\rm GV/m}$, experienced in rest frame with a momentum $p=125 {\rm MeV/}c$ when passing through large magnetic field $|\vec{B}|=3{\rm T}$. Current fluxes at $μ$E1 beam line permit improved sensitivity $σ(d_μ)\leq 6\times10^{-23}e{\rm cm}$, about three orders magnitude more than current upper limit $|d_μ|\leq1.8\times10^{-19}e{\rm...
Next generation ion therapy magnets both for gantry and accelerator (synchrotron) are under investigation in a recently launched European collaboration that, the frame of H2020 HITRI <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">plus</i> I.FAST programmes, has obtained some funding work packages on superconducting magnets. Design technology will be developed synchrotron -especially- gantry, taking as reference beams 430 MeV/nucleon ions...
When using superconducting (SC) magnets in a gantry for proton therapy, the will benefit from some reduction size and large weight. In this contribution we show an important additional advantage of SC therapy treatments. We present design with bending section achromatic beam optics very momentum acceptance [Formula: see text]15% (corresponding to about text]30% energy domain). Due related acceptance, approximately 70% treatments can be performed without changing magnetic field...
Nowadays there is a great deal of interest in the scientific community developing next-generation accelerator magnets based on high-Jc Nb3Sn Rutherford cables. Inside cable wires are subjected to combined effect axial and transverse load. Since strain sensitive material, electromechanical characterization cables essential for magnet design. Testing full-size an extremely complex involved task. For this reason special Walters springs have been developed at University Geneva test single under...
This paper provides an overview of the current developments in superconducting magnets for applications proton and ion therapy. It summarizes benefits challenges regarding utilization these accelerating systems (e.g. cyclotrons) gantries. The also examples currently used particle therapy proposed designs.
Following the spectacular success of third-generation light source over past decades, a few new-generation sources based on multibend achromat (MBA) scheme have come into operation. Other such facilities are also under construction while existing ones being upgraded. Likewise, Swiss Light Source, which has been in operation for more than 20 years at Paul Scherrer Institute, is to be upgraded with present storage ring replaced by an MBA low-emittance ring. A natural emittance 158 pm beam...
A technique to measure in situ the behavior of magnetic susceptibility vs. temperature, χ( <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">T</i> ), for a cable-in-conduit-conductor (CICC) SULTAN test facility has been developed. The same kind measurements are performed corresponding free standing filaments used cable manufacturing. comparison both ) curves allows at first critical temperature ( xmlns:xlink="http://www.w3.org/1999/xlink">Tc</i>...
The Canted-Cosine-Theta (CCT) technology has the potential, by its intrinsic stress-management, to lower coil stresses in high-field accelerator magnets. This is especially relevant for Nb <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> Sn magnets, which may be subject irreversible degradation if exceed critical values. internal structure of CCT coils, however, dilutes engineering current density. For an efficient design, structure,...
The knowledge of the thermal strain distribution Nb <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> Sn filaments in a cable conduit conductor (CICC) cross section is key parameter understanding performance evolution when it undergoes electromagnetic (EM) cyclic loading. A CICC complex system and as such behaves way that not directly predictable by studying single components. Reversible irreversible phenomena occur together; therefore,...
Understanding the critical current performance variation of Nb3Sn superconducting wires under mechanical loading is a crucial issue for design next generation accelerator and fusion magnets. In these applications, properties conductors may become limiting factor due to strong electro-magnetic forces resulting from combination large magnets intense magnetic fields. particular, presence voids in filament structure, which are formed during fabrication reaction heat treatment, determines...
The measurement of current sharing temperature Cable in Conduit Conductors is the main test for acceptance superconducting cables ITER Project. This defined as one at which average electric field along cable reaches a critical value E <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sub> . Due to complexity measurement, evaluation T xmlns:xlink="http://www.w3.org/1999/xlink">cs</sub> from experimental results not straightforward. Different...
The use of Canted Cosine Theta (CCT) magnets for accelerator applications has gained popularity due to their ease manufacturing and assembly. In the context two EU-Horizon2020-funded projects, HITRIplus IFAST, development 80 mm free bore 4 T central field CCT dipoles in ion therapy (hadron therapy) is underway. a straight dipole features superimposed quadrupole component (combined function winding), while curved (bending radius 1.65 m) wound as pure dipole. Both projects are based on...
The Isotope and Muon Production using Advanced-Cyclotron Target Technology Project (IMPACT) foresees the introduction of two new target stations three beamlines: one for radionuclide production surface muon production. latter forms project, High-Intensity Beams (HIMB), which plans to increase rate from current world record 10 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">8</sup> μ xmlns:xlink="http://www.w3.org/1999/xlink">+</sup> /s up...
In the period between August 2010 and 2011 SULTAN test facility has been continuously operated, with over one dozen campaigns. Among ITER conductors, five Toroidal Field (TF) samples, two Central Solenoid (CS) samples four NbTi for Poloidal (PF), Correction Coil Main Busbar coming from Japan, Russia, Korea China have tested duration of campaign ranging to nine weeks each. Two non-ITER conductor are also in same period, a high current cable-in-conduit (CICC) secondary winding EDIPO flux pump...
Proton therapy for the treatment of cancers adopts a rotating gantry to irradiate tumor from any direction. The system consists different beamline magnets that bend proton beam towards patient. use superconducting allows reducing size and weight last bending section. During operation, it is necessary change magnetic field section in order vary penetration depth. This determines electrodynamic transients strands cables generate losses. A thorough computation these losses essential safe design...
The Paul Scherrer Institute is planning a major upgrade of the Swiss Light Source (SLS-2) with development new storage ring lattice providing ultralow emittance while maintaining locations undulator-based beam lines, in order to meet growing demand users for higher photon flux and brilliance. preliminary design features multibend achromat seven bending magnets each 12 arcs. This compact low-emittance will include use high field longitudinal gradient bends (LGB), whose fabrication are...
Proton therapy is a rapidly developing technique in cancer treatment since the radiation dose delivered to target volume maximized and surrounding healthy tissue minimized. The 3-D scanning-irradiation method performed by means of fast sweeper magnets for transverse scanning, scanning depth tumor energy changes steps 1% less than 100 ms. Therefore, high magnetic field ramping speed necessary. To aim beam from all directions patient, last part transport system are mounted on rotatable gantry....
Electric dipole moments (EDMs) of fundamental particles violate time invariance and the combined symmetry charge parity (CP). The existence a large muon EDM (muEDM) is made plausible by tensions with Standard Model predictions for semileptonic decays heavy meson measured at LHCb, BaBar, Belle, as well muon’s anomalous magnetic moment (AMM). A discovery muEDM would manifest CP lepton flavor universality (LFU) violation, revealing physics beyond SM (BSM). most sensitive search to date provides...
Knowledge of the actual Nb3Sn filaments' thermal strain, εth, in a cable-in-conduit conductor (CICC) is essential to predict CICC performance operation starting from strand scaling laws for critical current density Jc(B,T,ε). To obtain measurement εth under relevant conditions, i.e. at low temperature and with mechanical constraints long length section CICC, as function applied field, Tc(B), measured by an inductive method situ freestanding filaments used cable manufacture. deduce strain...
The measurement of the actual thermal strain, , in a cable conduit conductor (CICC) is paramount importance to predict CICC performance operation starting from strand scaling laws for critical current density . behavior temperature as function axial strain at constant field, known literature and accurately described by interpolative laws. In scope this work, applied measured in-situ free standing filaments used manufacture. These results are compared with curve draw CICC. A small AC field...
A new storage ring is planned for the upgrade of Swiss Light Source (SLS). It will replace 12 triple bend achromats by twelve 7-bend achromats, which are based on low aperture longitudinal gradient bends (LGBs) and anti-bends (ABs), thus reducing emittance from 5.0 nm to about 150 pm at 2.4 GeV while maintaining source points undulator beam lines. Sextupole octupole strengths determined using a multi-objective genetic algorithm (MOGA) result in sufficient dynamic off-axis injection several...
Keywords: ITER ; toroidal field coils central solenoid magnetic measurements susceptibility Nb3Sn CICC SULTAN thermal strain reversible and irreversible phenomena These Ecole polytechnique federale de Lausanne EPFL, n° 5952 (2013)Programme doctoral PhysiqueFaculte des sciences baseCRPP - Groupe SupraconductiviteJury: H.M. Ronnow (president), L. Bottura, A. Fasoli, J.V. Minervini Public defense: 2013-10-2 Reference doi:10.5075/epfl-thesis-5952Print copy in library catalog Record created on...