Conveners
Accelerator: Physics, Performance, and R&D for Future Facilities: Session II - Premiere
- Lia Merminga (Fermilab)
- Michael Benedikt (CERN)
Accelerator: Physics, Performance, and R&D for Future Facilities: Session III - Premiere
- Daniele Margarone (Institute of Physics o the Czech Academy of Sciences)
- Jie Gao (Institute of High Energy Physics, China)
Accelerator: Physics, Performance, and R&D for Future Facilities: Session I - Replay
- There are no conveners in this block
Accelerator: Physics, Performance, and R&D for Future Facilities: Session II - Replay
- There are no conveners in this block
Accelerator: Physics, Performance, and R&D for Future Facilities: Session III - Replay
- There are no conveners in this block
Accelerator: Physics, Performance, and R&D for Future Facilities: Session IV - Replay
- There are no conveners in this block
Beam optics control in the HL-LHC will present significant challenges, relating to the extremely low-$\beta^*$ in the two main experiments: ATLAS and CMS. The luminosity delivered to the experiments during the first several hours of HL-LHC fills will be kept constant via $\beta^*$-levelling. Such an extensive optimisation will require the commissioning of a large number of optical...
Following the successful initial phase of the Gamma Factory (GF)
R&D studies—showing that atomic beams can be efficiently produced
and accelerated in the CERN rings up to the top LHC energy—the GF
collaboration proposes, as the next R&D phase, a Proof-of-Principle (PoP)
experiment to study collisions of the laser photons with
partially stripped ions at the SPS. Following the...
In Nov 2018, CEPC CDR was cpmpleted and released publicly. In May 2019 CEPC strategy
plan was submitted to European high energy physics strategy meeting fo rdiscussion.Since the formal enetring into the CEPC accelerator TDR phase, many progresses have been made in optimization designs, hardware R&D, industrialization, such as high efficiency klystron, SC accelerator system, magnets, vacuum...
Upgrading the SuperKEKB e+e- collider with a polarized e- beam is under consideration as it enables a new program of precision electroweak and other physics at 10.6 GeV, thereby opening exciting new windows in search of new physics. Measurements of left-right asymmetries ($A_{LR}$) of e+e- transitions to pairs of muons, c- and b-quarks would yield substantial improvements to the determinations...
The physics program proposed by circular and linear e+e− colliders at the electroweak and TeV scale exhibits considerable complementarity. This could be exploited on a world-wide scale if both a large circular and a linear infrastructures were available. A possible implementation of such a complementary program is shown.
To exploit properly the precision physics program at the FCC-ee, the theoretical precision tag on the respective luminosity will need to be improved from the 0.054 % (0.061%) results at LEP to 0.01%, where the former (latter) LEP result has (does not have) the pairs correction. We present an overview of the roads one may take to reach the required 0.01 % precision tag at the FCC-ee and we...
Muon colliders have the potential to carry the search for new phenomena to energies well beyond the reach of the LHC in the same or smaller footprint. Muon beams may be created through the decay of pions produced in the interaction of a proton beam with a target. To produce a high-brightness beam from such a source requires that the beam be cooled. Ionization cooling is the novel technique by...
In the framework of the European Strategy Update on Particle Physics, the working group appointed to review the Muon Colliders has become the de facto seed of an on-going international effort. A muon collider, if demonstrated to be feasible, is a unique discovery machine and the best tool to fully study the Higgs potential, since it can offer collisions of point-like particles at very high...
A Muon Collider represents a very interesting possibility for a future machine to explore the energy frontier in particle physics.
However, to reach the needed luminosity, beam intensities of the order of 10^9-11 muons per bunch are needed. In this context, the beam Induced Background must be taken into account for its effects on the magnets and on the detector.
Several optimisations can be...
The Mu2e experiment, currently under construction at Fermilab, will search for coherent neutrinoless muon to electron conversion, extending the sensitivity of searches for charged lepton flavor violation by four orders of magnitude in 3-5 years of data-taking. This improved sensitivity is made possible by using a pulsed beam structure that is optimized for reducing prompt backgrounds when...
Bent crystals are a powerful mean for ultrarelativistic particles steering, achieving deflection equivalent to hundreds-tesla magnetic dipole in compact and zero-energy consumption devices. Currently, bent crystals are a candidate for the upgrade of LHC ion collimation. Novel experimental setups are being proposed, especially in the field of spin precession. Indeed, the unparallel steering...
Proton and x-ray irradiation are essential procedure required to characterize the effects of TID and displacement damage designing silicon sensors for charged particle.
A The experimental area of a new new medical facility located in Trento (Italy) allow to perform irradiation on silicon pixel sensors, SiPM, and experimental electronic devices using protons with energy in the range of 70-230...
The SuperKEKB electron-positron collider has been commissioned at KEK to study a new physics in the B-meson decays. In order to accomplish this purpose, the luminosity of 40 times of the highest luminosity record at KEKB, 8 x 10$^{35}$ cm$^{-2}$s$^{-1}$ is necessary. We have applied a novel “nano-beam scheme” to squeeze the beta function at the interaction point (IP) down to 1 mm in the...
The Large Hadron-electron Collider (LHeC) at CERN is the project to upgrade the HL-LHC to study electron-proton/nucleus collisions with centre-of-mass energies in the TeV regime and luminosities ${\cal O}(10^{34})$ cm$^{−2}$s$^{−1}$. It implies the construction of an energy recovery linac in racetrack configuration to provide an intense 50 GeV electron beam to collide with the HL-LHC hadron...
The Compact Linear Collider (CLIC) collaboration has presented a project implementation plan for construction of a 380 GeV e+e- linear collider 'Higgs and top factory' that is upgradable in stages to 3 TeV. The CLIC concept is based on high-gradient normal-conducting accelerating structures operating at X-band (12 GHz) frequency. We present the CLIC accelerator concept and the latest status of...
Linear e+e- colliders uniquely offer the opportunity to study collisions with longitudinally polarized electron and positron beams. In recent studies of precision tests of the Standard Model at the International Linear Collider, it has been seen that this capability can play an unexpectedly important role. This comes, first, from the ability of polarization asymmetries to access essential...
Meson factories are powerful drivers of diverse physics programs and play a major role in particle physics at the intensity frontiers.
Currently PSI delivers the most intense continuous muon beam in the world up to few 10E8 μ+/s. The High Intensity Muon Beam (HiMB) project at PSI aims at developing new muon beam lines able to deliver up to 10E10 μ+/s, with a huge impact for low energy...
The J-PARC neutrino beamline produces a high intensity neutrino beam using 30 GeV protons from the J-PARC Main Ring (MR) accelerator for the T2K long baseline neutrino oscillation experiments. The MR accelerator and neutrino beamline achieved 515kW stable operation during the most recent run. MR upgrades toward 1.3 MW beam power are being planned for further running of the T2K and future...
I shall present scientific/epistemological, as well as practical arguments in favor of a facility where to explore, with analogs, otherwise unreachable territories of the theoretical landscapes.
In this facility, theorists (both of the HEP-TH and of the COND-MAT types) should sit next to experimentalists (mostly of the COND-MAT type). I shall call this facility HELIOS, an evocative name for...
The Advanced Wakefield Experiment (AWAKE) is an accelerator R&D experiment at CERN using, for the first time, a high-energy proton bunch to drive wakefields in plasma and accelerating electrons to the GeV energy scale. The principle of the AWAKE experiment is described. We show experimental results of the seeded self-modulation process of the long 400 GeV SPS proton bunch, transforming the...
Laser wakefield acceleration (LWFA) allows producing a few GeV electron beams in a plasma channel with a length of few cm with unique parameters such as bunch length of a few fsec and the bunch charge up to 100 pC. With the constant improvement of the electron beam parameters, in particular, the energy spread and the emittance of the electron beam, LWFA can to be considered as a candidate for...
The ELIMAIA (ELI Multidisciplinary Applications of laser-Ion Acceleration) beamline has been recently installed at ELI-Beamlines in the Czech Republic. The main goal of ELIMAIA is to offer short ion bunches accelerated by lasers with high repetition rate to users from different fields (physics, biology, material science, medicine, chemistry, archaeology) and, at the same time, to demonstrate...
To make the best possible use of existing and proposed collider experiments, the precise measurement and understanding of machine induced backgrounds as well as forward collision products coupled back into the accelerator is crucial. Conventional detector simulations do not include the whole accelerator with thousands of magnets, nor does the numerical integration used to track through...
The Circular Electron Positron Collider (CEPC) has been proposed for Higgs and electroweak measurements with unprecedented precision. To achieve the required performance precision, it is critical to understand, characterize and then mitigate the beam backgrounds that are critical for the machine and detector design and operation.
In this talk, we will present the latest studies of the beam...
