The PANDA Experiment, which is located at the High Energy Storage Ring at the FAIR accelerator center in Darmstadt, Germany, is optimized for questions of hadron physics. With this detector it will be possible to discover new states and measure their line shapes as well as the line shapes of already known states very precisely. To normalize the energy scan measurements exact knowledge of the luminosity is required. The luminosity at PANDA will be determined from the angular distribution of elastical antiprotonm proton scattering. In order to achieve an absolute measuring accuracy of 5% , the tracks of the scattered antiprotons will be measured by four planes of thinned silicon detectors (HV-MAPS). HV-MAPS are pixel sensors with integrated readout electronics. They will be operated with a reverse voltage of 60 volts to increase their radiation hardness. The four detector planes consist of CVD-diamonds on which the sensors are clued. To reduce the multiple scattering the detector is operated in a vacuum. The concept of the luminosity detector is presented and technical aspects such as the vacuum system, cooling, electronics, and sensors are discussed, as well as insights into data analysis.

The PANDA experiment of the FAIR facility will address open questions in hadron physics using antiproton beams in the momentum range of 1.5-15 GeV/c. The antiprotons are stored and cooled in the High Energy Storage Ring (HESR) and allow high precision spectroscopy in the energy range of closed and open charm. Two Cherenkov detectors using the principle of Detection of Internally Reflected Cherenkov light (DIRC) will provide excellent PID in the PANDA target spectrometer. The Endcap Disc DIRC separates pions from kaons better than 3σ up to momenta of 4 GeV/c in the forward direction, for polar angles from 5∘ to 22∘. It uses a fused silica radiator disk, consisting of four optically isolated quadrants. The Cherenkov photons are imaged on Microchannel-Plate PMTs (MCP-PMTs) by focusing lightguides. The Barrel DIRC cleanly separates pions from kaons for polar angles in the range of 22∘ - 140∘ and momenta up to 3.5 GeV/c. The barrel is formed by 16 sectors, each comprising three narrow fused silica radiator bars, with a flat mirror attached to one end and a spherical lens attached to the other, and a large fuse silica prism, coupled to each group of three lenses. The Cherenkov light is focused on the back side of the prism, where an array of lifetime-enhanced MCP-PMTs detects the photons. The designs are simulated and validated in test beams with prototypes and the Technical Design Reports of both devices have recently been completed. While mass production of some of the components has already started, the R&D for other important items, like the readout electronics or the shape and materials of the mechanical support, is still ongoing. This talk describes the status of the two DIRC projects and will discuss the remaining R&D activities.

The PANDA detector at the international accelerator Facility for Antiproton and Ion Research in Europe (FAIR) in Darmstadt (Germany) will address fundamental questions of hadron physics in high-energy antiproton collisions with fixed hydrogen and nuclear targets.  The PANDA Forward RICH (FRICH) is intended for identification of charged particles with forward polar angles below 5°–10° and momenta from 3 to 15 GeV/c. PANDA FRICH will feature a multilayer focusing aerogel radiator, photon detection by Hamamatsu H12700 MaPMTs read out by DiRICH front-end electornics. Precisely aligned flat mirrors will collect Cherenkov light on the photon detector. Results of optical measurements of the detector components are presented. The PANDA Forward RICH prototype was tested at 3GeV electron beam at the Budker INP in 2019. Single photon resolution was obtained that agrees with expectations.