Speaker
Description
To exploit the full potential of the physics at the Future Higgs, Top and Electroweak
factories extremely lightweight and precise vertex detectors are needed, especially
to precisely reconstruct the decay and interaction vertices in flavour physics
processes and the measurement of Higgs and Z decays to bottom and charm quarks
and tau-leptons.
I will discuss the requirements of those vertex detectors, covering the necessary
impact parameter resolution, needed rate capability, and radiation tolerance, while
keeping the material budget below 0.3% of a detection layer. I will discuss similarities
and differences between vertex detectors at linear and circular colliders, including
the requirements coming from the beam induced backgrounds.
These detector requirements translate into sensors used for the vertex detector,
featuring about 3 µm spatial resolution and possibly provide timing information of the
order of few tens of ns, while keeping power consumption minimal to allow for air-
cooling thus minimising the detector material budget.
The detectors based on CMOS Monolithic Active Pixel Sensors (MAPS) technology
which combine signal generation, amplification and readout into a single silicon die,
are currently the best candidates for those vertex detectors. I will present an
overview of existing and planned MAPS technologies and prototypes towards
fulfilling the stringent future vertex detector requirements.
Lastly, a short outlook towards existing solutions for the main detector concepts will
be given.
