Input considerations to heat limits & warm-to-cold transitions
The RF system for the initial and 6D-muon-cooling channels consists of several RF cavities operating at 352 and 704 MHz. To meet the luminosity requirements of a muon collider, the maximum muon beam intensity at the end of the cooling channel is expected to be on the order of $10^{12}$ muons per bunch. At such high beam intensities, transient beam loading can severely impact the accelerating...
This study explores the implementation of an RF re-acceleration structure positioned between two final cooling cells. Various cavity configurations are analyzed under specific RF parameters to optimize the longitudinal beam dynamics. A detailed examination of the longitudinal phase space evolution within these RF systems is conducted, aiming to prepare the beam energy and adjust the energy...
In the scenario of the Muon Collider, the short muon lifetime (2.2 μs at rest) poses several challenges in developing magnets, RF systems, targets, shielding, and cooling. One major concern is the flux of neutrinos produced by muon decay in the collider, which necessitates minimizing straight sections. This constraint makes conventional FoDo cells unsuitable, requiring the development of...
The baseline design for the high-energy complex of a muon collider consists of a chain of Rapid Cycling Synchrotrons (RCS). The RCS chain examined in this study is based on CERN infrastructure: three RCSs are designed to reuse existing tunnels at CERN, the SPS and LHC tunnels. These synchrotrons cover an energy range from 63 GeV to 3.8 TeV and include both normal and hybrid types, featuring a...
Following the indications of the European Strategy for Particle Physics update (ESPP), the International Muon Collider Collaboration has been established to explore the viability of a muon collider with a center-of-mass energy of 10 TeV. This attempt presents significant technological developments to fast accelerate and efficiently collide muon beams before they decay if we consider the...
Setup design is a critical aspect of experiment development, particularly in high-energy physics, where decisions influence research trajectories for decades. Within the MODE Collaboration, we aim to generalize Machine Learning methodologies to construct a fully differentiable pipeline for optimizing the geometry of the Muon Collider Electromagnetic Calorimeter.
Our approach leverages...
Following the guidelines of the European Strategy for Particle Physics, the International Muon Collider Collaboration (IMCC) has outlined a plan for an innovative particle accelerator that exceeds the performance of the LHC and its luminosity upgrade, aiming to explore new frontiers in particle physics. This next-generation machine is a muon accelerator featuring a 10-km-long collider ring...
A 10 TeV muon collider offers a combination of unprecedented energy collisions in a clean leptonic environment, providing both precision measurements and the highest energy reach. This endeavor will require novel detector technologies, designs, and software. Previous studies have analyzed 1.5 and 3 TeV muon collider detector designs adapted from CERN’s Compact Linear Collider (CLIC) detector...
We present a preliminary lattice design for a series of pulsed synchrotron rings to accelerate muon beams to their maximum collision energy at Fermilab. The rings are limited to a circumference of 15.5 km, which would allow them to fit just within the Fermilab site boundary. We wish to estimate the maximum energy that muons can be accelerated to on the Fermilab site based on a realistic...
To push the boundaries of physics beyond the capabilities of the LHC and its High-Luminosity Upgrade (HL-LHC), particle physicists are exploring advanced accelerators to enable more precise measurements and achieve higher energies. Following the recommendation of the Updated European Strategy for Particle Physics (ESPP), the International Muon Collider Collaboration has been established to...
The Muon Cooling Complex is a key component of the future high-energy Muon Collider, utilizing ionization cooling to significantly reduce muon beam emittance. This process relies on RF-accelerating cavities operating within a multi-Tesla magnetic field, which necessitates the use of beryllium (Be) windows to ensure beam transmission while minimizing particle scattering.
Thermo-mechanical...
Intrabeam scattering (IBS) has widely been studied in the field of accelerator physics. It impacts the entire performance of storage and damping rings, as it causes emittance growth. Its effect on one-pass linear accelerators was not expected to be as large. However, recent studies have suggested that IBS can become critical in these machines, as it highly enlarges their energy spread,...
The MAIA concept is a detector designed for a future Muon Collider operating at √s=10 TeV. The unique challenges of particle detection and reconstruction at a Muon Collider include mitigation of the beam-induced-background (BIB), requiring dedicated hardware and software solutions. Designing optimal detection and reconstruction software necessitates a detailed study of the effect of the BIB on...
This study aims to determine the preliminary design parameters for developing a liquid lead target subjected to high peaks of deposited thermal power (10¹⁷ W/m³) and deposition pulses on the order of nanoseconds. Under such conditions, previous studies and experiments have shown the formation of shock waves and splashing into the liquid lead target. The study utilizes the Mie-Gruneisen and...
Unlike their low temperature counterparts, high temperature superconductors (HTS) can retain excellent RF perfomance in the demanding conditions of some emerging high-energy physics technologies, which require high quality factors at frequencies in the GHz range under strong magnetic fields (16-20 T). In particular, we have demonstrated that REBa2Cu3O7-x (RE = Y, Gd, Eu) (REBCO) offers...
Muon collider (MuC) is a promising, yet challenging, pathway to achieve a 10TeV collider at the energy frontier. The current MuC design requires ionization cooling to shrink the beam emittance and accomplish the target luminosity. One key component in the ionization cooling channel is the NCRF cavity which replenishes the longitudinal energy and provides the longitudinal focusing. Overcoming...
Accurately modeling the transient behavior of non-insulated (NI) ReBCO superconducting coils is crucial for fully assessing their potential for high-field magnet applications. 3D Finite Element (FE) models are among the most promising approaches for capturing the thermal-electrodynamics of these coils. However, most popular mathematical formulations of Maxwell’s equations for superconductors,...
Ongoing conceptual studies for a 10TeV muon collider
identified rapid cycling synchrotrons as major engineering
challenge. Due to the muon’s short lifetime of only 2.2µs
at rest, normal-conducting bending magnets with field rise
rates of well beyond 1kT/s are indispensable to support ac-
cordingly fast acceleration cycles. Energies of 100MJ will be
interchanged between magnets and...
I will show a current design of a green field proton driver. It uses a flexible momentum compaction factor lattice. The momentum compaction is optimised in accumulator and compressor rings separately. Space charge effects during the bunch rotation will be estimated in the longitudinal and transverse directions. Possible beam experiments to demonstrate a bunch rotation with the high intensity...
A principal challenge associated with the realisation of the muon collider is the rapid acceleration of muons from injection to top energy within their lifetime. Rapid-cycling synchrotron (RCS) designs proposed thus far suffer limitations based on magnet ramp rates, power efficiency and power supply, and path length/time of flight differences (for the hybrid RCS proposals).
As an...
https://indico.cern.ch/event/1547636/
Steering Board, IMCC Collaboration Board, Governing Board
In this talk, we explore the discovery potential of the Inert Doublet Model (IDM) via the vector boson fusion (VBF) channel at a muon collider with centre-of-mass energy of 10 TeV. The Inert Doublet Model is a two-Higgs-doublet model variant with an unbroken discrete $\mathbb{Z}_2$ symmetry, featuring new stable scalar particles that can serve as dark matter candidates. Current dark matter...
We investigate the phenomenological prospects of the Two Higgs Doublet and Complex Singlet Scalar Extension (2HDMS) in the context of dark matter (DM) and Higgs phenomenology. The 2HDMS provides an enlarged Higgs sector along with a DM candidate. In this work, we perform an exhaustive scan to find representative benchmarks which are consistent with all theoretical and experimental constraints....
