Technical Design Report (TDR)

This document illustrates the technical layout and the expected performance of the Micro Vertex Detector (MVD) of the PANDA experiment. The MVD will detect charged particles as close as possible to the interaction zone. Design criteria and the optimisation process as well as the technical solutions chosen are discussed and the results of this process are subjected to extensive Monte-Carlo physics studies. The route towards realisation of the detector is outlined.

This document is the Technical Design Report covering the two large spectrometer magnets of the PANDA detector set-up. It shows the conceptual design of the magnets and their anticipated performance. It precedes the tender and procurement of the magnets and, hence, is subject to possible modifications arising during this process.

This document describes the technical layout and the expected performance of the Straw Tube Tracker (STT), the main tracking detector of the PANDA target spectrometer. The STT encloses a Micro-Vertex-Detector (MVD) for the inner tracking and is followed in beam direction by a set of GEM-stations.
The tasks of the STT are the measurement of the particle momentum from the reconstructed trajectory and the measurement of the specific energy-loss for a particle identification. Dedicated simulations with full analysis studies of certain proton-antiproton reactions, identified as being benchmark tests for the whole PANDA scientific program, have been performed to test the STT layout and performance. The results are presented, and the time lines to construct the STT are described.

This document presents the technical layout and the envisaged performance of the Electromagnetic Calorimeter (EMC) for the PANDA target spectrometer. The EMC has been designed to meet the physics goals of the PANDA experiment. The performance figures are based on extensive prototype tests and radiation hardness studies. The document shows that the EMC is ready for construction up to the front-end electronics interface.

This documents describes the technical design and the
expected performance of the Barrel DIRC detector for
the PANDA experiment.
The Barrel DIRC will provide hadronic charged particle
identification in the polar angle range of 22 to 140 deg
for particle momenta between 0.5 GeV/c and 3.5 GeV/c.

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 pi/K
separation with at least 3 standard deviations over the
entire phase space of charged kaons in the Barrel DIRC.

This technical design report (TDR) illustrates the technical layout and the expected performance of the
luminosity detector (LMD) in the PANDA spectrometer. PANDA is an experiment performing physics measurements
in the high energy store ring (HESR) antiproton beam impinging on a crossing material target.
The LMD will reconstruct elastically scattered antiproton tracks to monitor the relative luminosity and to
extract the absolute luminosity mainly for absolute cross section measurements. We expect to determine the
luminosity with a precision better than 3%. However the accuracy of the systematic uncertainties coming
from the extraction method are expected to be better than 0.1%.
This document is divided into 7 chapters. First we motivate shortly the PANDA experiment and its setup.
Important aspects, specially of the FAIR accelerator complex, the PANDA target system and the PANDA
magnet setup, are pointed out from the view of the LMD as a basis for the understanding of the LMD design
and the expected performance.
The principles of the term luminosity and its measurement are topics of the Chapter 2. The fundamental
understanding of antiproton proton elastic scattering is the basis for the high precision extraction of the
luminosity. The physics model is discussed which is parametrized with experimental data. It is currently
therefore the main source for the systematical uncertainty and limiting the expected precision. Moreover
concepts of existing luminosity monitoring systems and benefits of a machine independent measurement are
explained to motivate a new type of luminosity detector for the PANDA experiment.
Chapter 3 digs then into details of the technical design which is driven by all the constraints from preceding
chapters. The emphasis is put on the construction and operation of the LMD. The motivation for special
solutions is kept short and referenced to results from our R&D process written down in later sections. Hardware
results from our R&D phase are put into chapter 4. This chapter presents our proof of concept and discusses
the status of our mechanical and electronic design studies.
The corresponding software analysis framework is explained in chapter 5. Up to now the performance of the
detector can only be estimated based on MC simulation studies which are treated off in this chapter as well.
All complications which we expect in the process of luminosity extraction are listed here and the influence on
our final accuracy is estimated.
As an integral part of a TDR our time lines as well as our human, material and financial resources are
discussed in chapter 6.