To this aim, a proximity focusing C6F14/CsI RICH (Ring Image CHerenkov) detector has been designed, built, tested and operated to separate kaons from pions with a pion contamination of a few percent up to 2.4 GeV/c.
Another test beam has been conducted on a slice of the whole calorimeter (ECAL plus HCAL), exposing it to beams of electrons and pions with energies from 1 to 300 GeV.
The HARP experiment will carry out, at the CERN PS, a large programme of measurements of secondary hadron production, over the full solid angle, produced on thin and thick nuclear targets by beams of protons and pions with momenta in the range 2 to 15 GeV/c.
The main goal is to search for direct CP violation in decays to three pions with a sensitivity at a level of 10−4 on the asymmetry Ag="(g+−g−)/(g++g−) where g is the linear slope parameter in the Dalitz plot.
The chips ability to operate under LHC conditions was tested in a high-rate pion beam with track densities up to 3×107 cm−2 s−1.
To reconstruct charged pion tracks with high efficiency and high resolution a single magnet spectrometer based on straw tubes, working in vacuum, should be designed and produced.
We present azimuthally differential pion femtoscopy with respect to second and third harmonic event planes as a function of the pion transverse momentum for different collision centralities in Pb Pb collisions at sNN= 2.76 TeV.
The tray combination will allow for identification of kaons from 1 GeV/c up to 7.2 GeV/c, reaching ∼10−2 proton and 10−3 pion rejection, with kaon detection efficiency better than 95%.
With the addition of new tracking layers and an EM preshower, a crucial program of upsilon measurements, as well as neutral pion measurements with a 40 GeV/c reach, can be made in a flexible accelerator facility capable of providing a diverse range of collision systems across many beam energies.
