CLIC represents a compelling opportunity for the post-LHC era

In a recent comment on future particle accelerators in Nature Review Physics, Steinar Stapnes, the CLIC project leader at CERN, reports on the key CLIC concepts and the crucial parameters for planning of a large accelerator. Stapnes argues that the energy staging of CLIC naturally allows flexibility and adaptability to future physics discoveries and technological progress in the field.  For the latter he highlights the strong link between linear colliders and general accelerator advances and construction of smaller high-performance accelerator systems such as FELs.


Following a technologically-driven schedule, the construction of the first CLIC energy stage could start as early as 2026 with first collisions at 380 GeV in 2035.  This provides a very attractive timeline, allowing for continuous exploration of the Higgs and top-quark sector directly after the end of the high-luminosity LHC programme.


Focusing on the key CLIC design and technology choices and its technical realization, Stapnes further discusses how the basic infrastructure of a linear collider, including tunnels and experimental installations, provide a promising opportunity for the future of CERN: the CLIC infrastructure could become the home of even higher-energy colliders. Read the full article here!

The CLIC project is ready to proceed towards construction – report from the annual CLIC week

CLIC X-band accelerating structure prototype undergoing testing at CERN


End-of-run rush for CLIC pixel detectors in test beams


Several silicon pixel-detector technologies are being explored in view of the challenging requirements for the CLIC vertex and tracking detectors in terms of high spatial resolution (3-7 µm), precise hit timing (10 ns binning) and very low material budget (down to 0.2% of a radiation length per detection layer). 


Members of the CLICdp vertex and tracker project are studying a variety of hybrid devices using the recent CLICpix2 prototype ASIC. In addition, several monolithic depleted CMOS sensors in different technologies are studied (High-Voltage CMOS with ATLASpix as a test-bed for a future CLIC tracker chip, High-Resistivity CMOS with the Investigator leading the way to a dedicated CLICTD prototype chip, and Silicon-on-Insulator technology with various test chips).


More photos from the test beam campaign can be found here!  



High-gradient X-band technology: from TeV colliders to light sources and more


The role of high-gradient and X-band technology is expanding steadily, with applications at a surprisingly wide range of scales. The April 2018 issue of the CERN Courier features an article on X-band technology: ''High-gradient X-band technology: from TeV colliders to light sources and more'' by Walter Wuench (CERN).


The article showcase how the demanding and creative environment of fundamental science serve as a fertile breeding ground for new technologies, in particular how technologies developed for CLIC show promise for smaller accelerators for applications outside high-energy physics. Several different XFEL applications are discussed: compact linacs and advanced diagnostics for photon sources (XFEL and Compton), medical applications (proton acceleration and very high energy electron therapy), and linacs to test advanced acceleration techniques.


Overview article on CLIC published in Europhysics News


An overview article on CLIC was published in Europhysics News


CLIC Workshop 2018 Focuses on Strategy



The Compact Linear Collider (CLIC) workshop is the main annual gathering of the CLIC accelerator and detector communities, and this year attracted more than 220 participants to CERN, 22-26 January. CLIC is a proposed e+e- linear collider, envisaged for the era beyond the High-Luminosity LHC (HL-LHC), that would operate a staged programme over about 25 years with collision energies at 0.38, 1.5, and 3TeV. This year, the meeting focused on preparations for the update of the European Strategy for Particle Physics. 


EU project lights up X-band technology



CLIC High-gradient X-band test facility (Image:CERN)