Submitted by firstname.lastname@example.org on Thu, 11/01/2024 - 18:13.
A new generation of experiments is being developed, where the challenge of separating rare signal processes from background at high intensities requires a change
of trigger paradigm. At the future PANDA experiment at FAIR, hardware triggers will be abandoned and instead a purely software-based system will be used.
This requires novel reconstruction methods with the ability to process data from
many events simultaneously.
A 4D tracking algorithm based on the cellular automaton has been developed which will utilize the timing information from detector signals. Simulation studies
have been performed to test its performance on the foreseen free-streaming data from the PANDA detector. For this purpose, a quality assurance procedure for
tracking on free-streaming data was implemented in the PANDA software. The studies show that at higher interaction rates, 4D tracking performs better than
the 3D algorithm in terms of efficiency, 84% compared to 77%. The fake track suppression is also greatly improved, compared to the 3D tracking with roughly
a 50% decrease in the ghost rate.
Submitted by j.schwiening on Tue, 04/12/2018 - 12:57.
The PANDA (anti-Proton ANnihiliation at DArmstadt) experiment will be one
of the four flagship experiments at the new international accelerator complex
FAIR (Facility for Antiproton and Ion Research) in Darmstadt, Germany.
PANDA will address fundamental questions of hadron physics and quantum
chromodynamics using high-intensity cooled antiproton beams with momenta
between 1.5 and 15 GeV/c and a design luminosity of up to 2×10^32 cm−2 s−1.
Excellent particle identification (PID) is crucial to the success
of the PANDA physics program. Hadronic PID in the barrel region of the
target spectrometer will be performed by a fast and compact Cherenkov
counter using the detection of internally reflected Cherenkov light (DIRC)
technology. It is designed to cover the polar angle range from 22° to 140° and
will provide at least 3 standard deviations (s.d.) π/K separation up to
3.5 GeV/c, matching the expected upper limit of the final state kaon
momentum distribution from simulation.
This documents describes the technical design and the expected performance
of the PANDA Barrel DIRC detector. The design is based on the successful
BaBar DIRC with several key improvements.
The performance and system cost were optimized in detailed detector
simulations and validated with full system prototypes using particle
beams at GSI and CERN. The final design meets or exceeds the PID goal of
clean π/K separation with at least 3 s.d. over the entire phase space of charged
kaons in the Barrel DIRC.
Submitted by t.stockmanns on Thu, 09/11/2017 - 14:27.
In this paper different propagation methods for the extraploation of tracks from the STT to the EMC are studied and a new, momentum and particle type dependent quality cut was introduced to improve the completness and the purity of charged candidates.
Submitted by jerzy.smyrski@u... on Thu, 19/10/2017 - 21:28.
The design of straw tube detector modules developed for the PANDA Forward Tracker is
presented. One module consists of 32 straws with 10mm diameter, arranged in two staggered
layers, and has a very low material budget of only 8:8 x10^-4 X0. The overpressure of the working gas
mixture of 1 bar makes the module self-supporting and enables the use of lightweight and compact
support frames. Detection planes in the Forward Tracker consist of modules mounted closely,
without gaps, next to each other on a support frame. A module can be mounted and dismounted
from the frame without the need to remove the neighborig modules, enabling fast repairs. Technical
details of the detector design and the assembly procedure of the straw tubes and the straw modules
as well as results of performed tests of the modules are given.
Submitted by d.khaneft on Tue, 10/05/2016 - 10:11.
The results of simulations for future measurements of electromagnetic form factors at \PANDA (FAIR) in frame of the PandaRoot software are reported. The statistical precision at which the proton form factors can be determined is estimated. The signal channel $\bar p p \to e^+ e^-$ is studied on the basis of two different but consistent procedures. The main background is identified in the $\bar p p \to \pi^+ \pi^-$ channel. The suppression of this background, the background versus signal efficiency, and the of the statistical errors on the extracted proton form factors have been also evaluated according to the two different procedures. The comparison with older predictions based on an old framework shows consistency of the results and a slightly better precision is achieved here in a large range of momentum transfer, assuming the nominal conditions of beam and detector performances.