The PANDA GEM-based TPC prototype

Fabbietti, L.; Angerer, H.; Arora, R.; Beck, R.; Berger, Martin; Bühler, P.; Cargnelli, M.; Doerheim, S.; Hehner, J.; Herrmann, N.; Höppner, Ch.; Kaiser, David; Ketzer, B.; Mladen, K.; Kleipa, V.; Konorov, I.; Kunkel, J.; Lalik, R.; Lang, Μ.; Leifels, Y.; Márton, J.; Neubert, S.; Paul, S.; Schmitz, R.; Schmidt, C.; Schwab, S.; Sovk, D.; Suzuki, K.; Thoma, U.; Vandenbroucke, M.; Voss, B.; Voss, J.; Walther, Dirk; Weinert, J.; Winnebeckd, A.; Zenke, F.; Zhang, X.; Zmeskal, J.

doi:10.1016/j.nima.2010.06.317

Cited by 22 publications

(6 citation statements)

References 8 publications

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“…The single hit resolution of such a device would be limited by the diffusion of the drifting electrons, but a large number of hits would be available. Gaseous electron multiplier (GEM) foils or Micromegas could be used to generate the electron avalanche, inducing signals on readout pads and allowing the TPC to be operated in continuous mode (no gating) even in presence of a very high track rate [29].…”

Section: Vertex Detectormentioning

confidence: 99%

The quest for $$\mu \rightarrow e \gamma $$ μ → e γ and its experimental limiting factors at future high intensity muon beams

et al. 2018

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The search for the lepton flavor violating decay μ + → e + γ will reach an unprecedented level of sensitivity within the next five years thanks to the MEG-II experiment. This experiment will take data at the Paul Scherrer Institut where continuous muon beams are delivered at a rate of about 10 8 muons per second. On the same time scale, accelerator upgrades are expected in various facilities, making it feasible to have continuous beams with an intensity of 10 9 or even 10 10 muons per second. We investigate the experimental limiting factors that will define the ultimate performances, and hence the sensitivity, in the search for μ + → e + γ with a continuous beam at these extremely high rates. We then consider some conceptual detector designs and evaluate the corresponding sensitivity as a function of the beam intensity.

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Section: Vertex Detectormentioning

confidence: 99%

The quest for $$\mu \rightarrow e \gamma $$ μ → e γ and its experimental limiting factors at future high intensity muon beams

et al. 2018

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“…The prototype has a length of 727.8 mm and has an inner (outer) radius of 52 mm (154 mm) [2]. An exploded view can be seen in figure 1.…”

Section: Mechanical Designmentioning

confidence: 99%

A prototype GEM-TPC for PANDA

Dørheim¹

2012

J. Inst.

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The PANDA fixed-target experiment planned at the future international Facility for Antiproton and Ion Research (FAIR) in Darmstadt, Germany, will investigate fundamental questions in non-perturbative QCD. It features a cooled antiproton beam with momenta from 1.5 to 15 GeV/c and will reach luminosities of up to 2 • 10 32 cm −2 s −1 corresponding to a pp-annihilation rate of 2 • 10 7 s −1 . One option for the central tracker of the target spectrometer was a cylindrical, ungated, continuously running TPC with GEM-based amplification stage surrounding the interaction point.To show the feasibility of such a detector, a prototype with a drift length of 727.8 mm and an inner (outer) radius of 52 mm (154 mm) was built. The pad plane of the detector has 10254 hexagonal pickup electrodes which are read out using 42 front-end cards, each equipped with four AFTER chips, originally developed for the T2K experiment.The prototype was installed and tested in the FOPI spectrometer at GSI (Darmstadt, Germany). The central drift chamber and the RPC-TOF system of FOPI give excellent reference for momentum and energy loss measurements with the TPC. A superconducting solenoid magnet creates a magnetic field of 0.6 T. Gas mixtures of Ar/CO 2 (90/10) and Ne/CO 2 (90/10) were used with different drift fields ranging from 150 to 350 V/cm. A 83m Kr source was used for gain calibration.The GEM-TPC will significantly improve the vertex resolution and secondary-vertex detection of the FOPI spectrometer, where it was used in a three-week physics campaign with a π − beam in June 2011. A detailed overview of the detector hardware and electronics will be presented together with first results from the commissioning of the detector.

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“…In the case of charged particles, charged particles produce tracks with ion-electron pairs, and the center of gravity of the track cannot correctly represent the incident vertex of the ion, especially when ion entries into the detector with a large angle. A TPC-like analysis method could be used to reconstruct the incident vertex [5,6].…”

Section: Introductionmentioning

confidence: 99%

A fast spatial resolution optimizing method for track-ion using a GEM detector based on the time information

Zhou

Yang

et al. 2018

J. Inst.

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A: In this work, a fast method of vertex reconstructing for incident ions in GEM detectors was proposed. As inspired by the Time Projection Chamber (TPC), the time information of the consecutive signal samples from Front End Electronics (FEE) was employed. To demonstrate the method, an experiment involving a 2D-readout THGEM detector with an APV-25 FEE was taken. With one experiment dependent parameter in the analysis, the proposed method led to a spatial resolution of 0.45 mm, compared with the same number of 9.10 mm from the traditional center of gravity method. K: Micro pattern gaseous detectors, Neutron detectors, Pattern recognition, cluster finding, calibration and fitting methods A X P : 1234.567891Corresponding author. 2Corresponding author.

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The PANDA GEM-based TPC prototype

Cited by 22 publications

References 8 publications

The quest for $$\mu \rightarrow e \gamma $$ μ → e γ and its experimental limiting factors at future high intensity muon beams

The quest for $$\mu \rightarrow e \gamma $$ μ → e γ and its experimental limiting factors at future high intensity muon beams

A prototype GEM-TPC for PANDA

A fast spatial resolution optimizing method for track-ion using a GEM detector based on the time information

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