Speaker
Jerzy Smyrski
(Jagiellonian University)
Description
PANDA is a 4π detector designed for studies of reactions induced by antiproton beams on hydrogen as well as on nuclear targets at the Facility for Antiproton and Ion Research (FAIR) at Darmstadt, Germany.
Application of high intensity, phase space cooled antiproton beams with momentum in the range 1.5 to 15 GeV/c will make it possible to conduct high precision measurements in the field of hadron and nuclear physics including the charmonium spectroscopy, search for exotic states, study of the interaction of charm hadrons with the nuclear medium and investigation of double-hypernuclei.
To obtain a good momentum resolution the detector is split into the Target Spectrometer (TS) based on a superconducting solenoid magnet surrounding the interaction region and the Forward Spectrometer (FS) using a large gap dipole magnet for momentum analysis of the forward-going particles.
The interaction point is surrounded by a micro vertex detector optimized for registration of secondary vertices from D and hyperon decays.
For tracking of charged particles in the TS, either a straw tube tracker or a time projection chamber will be used. In the forward direction, it will be supplemented with planar GEM stations and straw tube tracking stations.
Particle identification for charged hadrons (p, pi±, K±) will be accomplished with barrel and disc DIRC detectors covering higher momenta and with a time-of-flight system at lower momenta. For muon identification the magnet yoke in the TS will be instrumented with muon counters and in the FS a muon range system is foreseen.
Energies of electrons and gammas will be measured with a PbWO4 barrel calorimeter in the TS and with a shashlyk calorimeter in the FS.
Due to a high pbar-p interaction rate of 2x10^7 1/s on one side, and diversity of investigated reactions on the other side, a high efficiency and flexibility in the online event selection is required. For this, we plan to use self-triggering detector readout and event selection in programmable electronics and in compute nodes.
In this contribution an overview of the PANDA design and the status of the ongoing detector development is presented.
Author
Jerzy Smyrski
(Jagiellonian University)
