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The Timepix3 ASIC is a multi-purpose readout chip for hybrid pixel detectors. It can measure time and energy simultaneously by employing time-of-arrival (ToA) and time-over-threshold (ToT) techniques. In the presented work, a time efficient method for pixel-by-pixel calibration of both ToA and ToT is investigated. Five assemblies of Timepix3 ASICs bump bonded to silicon pixel sensors of different thicknesses between 50 μm and 150 μm are calibrated with electrical test pulses, x-ray fluorescence and beams of minimum ionising particles in a reference telescope. After calibration, the energy resolution at 6.40 keV is 9.3 %. For 120 GeV/c pions, time resolutions down to 0.72 ns are achieved.

CLIC is an option for a future high energy linear $e^{+}e^{−}$ collider at CERN in the post-LHC era. The CLIC machine is designed to reach centre-of-mass energies ranging from a few hundred GeV up to 3 TeV. To achieve high precision measurements, e.g. of the Higgs- width, challenging requirements are imposed on the CLIC detector. A single point tracking resolution of 7 μm and a material budget of 1-2%$X_{0}$ per layer are required for the tracker. Moreover, to suppress background hits from beam-beam interactions, a precise time slicing of hits of 10 ns is needed. To address these requirements, a large area silicon tracker is foreseen for the detector at CLIC. In this context, integrated technologies are promising candidates to achieve large scale production and low material budget. The Investigator chip is a test chip developed for the ALICE Inner Tracking System upgrade, implemented in a 180 nm CMOS process on a high resistivity substrate. It contains various test-matrices with analogue functionality, which are read out by external sampling ADCs. This paper introduces the process and technology of the Investigator chip, describes the data taking and reconstruction setup and presents results on spatial and timing resolutions, as well as efficiency measurements, for a pixel pitch of 28 μm.

A new model for the CLIC detector has been defined based on lessons learnt while working with the CDR detector models and after a series of simulation studies. The new model, dubbed "CLICdet", also incorporates the experience from various R&D activities linked to a future experiment at CLIC. This note describes the studies and thoughts leading to the new detector model, and gives details on all of its sub-detector systems.

The strict requirements in terms of material budget for the inner region of the CLIC detector concept require the use of a dry gas for the cooling of the respective sensors. This, in conjunction with the compactness of the inner volumes, poses several challenges for the design of a cooling system that is able to fulfil the required detector specifications. This note summarizes the results obtained from experimental tests on the air cooling of the CLIC vertex detector as well as their comparison with the corresponding computational fluid dynamics simulations.

This paper summarizes the physics potential of the CLIC high-energy e+e- linear collider. It provides input to the Snowmass 2013 process for the energy-frontier working groups on The Higgs Boson (HE1), Precision Study of Electroweak Interactions (HE2), Fully Understanding the Top Quark (HE3), as well as The Path Beyond the Standard Model -- New Particles, Forces, and Dimensions (HE4). It is accompanied by a paper describing the CLIC accelerator study, submitted to the Frontier Capabilities group of the Snowmass process.