Konstantin, Chris, Aidan, Ryan, Phil, Glenn, Georg Joost, Peter
Apologies: Armin, Yvonne, Wing, Adrian
Konstantin's gave his postponed talk on PPD/4T pixel technology as a candidate for low power/low noise sensor technology for pixel tracking. He estimates an average power of 540W, a low peak power (good for reducing magnetic forces and the need for local energy storage) and a 15sigma MIP signal (essential to control the noise hit rate).
The PPD/4T technology has not yet been used in an active HEP experiment, and there are some technological challenges (particularly fast charge collection) but there is no hard theoretical limit to the size of the pixel (100-500um may be quite feasible) and the size is decoupled from the noise.
Konstantin currently has a project looking at this technology for the UK Space Agency.
The talk was followed by questions and a discussion on the synergy with ongoing LHC upgrade R&D.
Georg is setting up a student project to get started on the alignment and software issues. Armin will be spending some time in the Hamburg region so can talk to the DESY people about their CMS experience in this area.
The focus of the Oxford meeting will be to discuss how we can practically get started with work on the mechanical and related isseus.