Speaker
Antonino Sergi
(CERN)
Description
The NA62 experiment at CERN, aiming at a precision measurement of the ultra-rare decay K+ -> pi+ nu nubar, relies on kinematical rejection up to 10^5 (~10^10 is needed in total). One of the limiting factors to achieve this goal is the multiple scattering in the magnetic spectrometer for kaon decay products; therefore an almost massless (~1.5% X0) straw tracker has been designed to operate in vacuum, to be able to install it inside the decay volume. A vacuum tight prototype was built and tested in 2010: efficiency (~99%), rate capability and single straw resolution (~200um) were verified. The construction of the first chamber started in 2011.
Author
Antonino Sergi
(CERN)
