Development of the GridPix detector for dual phase noble gas time projection chambers

2011 ◽  
Author(s):  
M. Alfonsi ◽  
N. van Bakel ◽  
M. P. Decowski ◽  
G. Hemink ◽  
H. van der Graaf ◽  
...  
Keyword(s):  
Noble Gas ◽  
Dual Phase ◽  
Time Projection Chambers ◽  
Time Projection

scholarly journals A 4 tonne demonstrator for large-scale dual-phase liquid argon time projection chambers

2018 ◽  
Vol 13 (11) ◽  
pp. P11003-P11003 ◽  
Author(s):  
B. Aimard ◽  
Ch. Alt ◽  
J. Asaadi ◽  
M. Auger ◽  
V. Aushev ◽  
...  
Keyword(s):  
Large Scale ◽  
Liquid Argon ◽  
Dual Phase ◽  
Time Projection Chambers ◽  
Phase Liquid ◽  
Time Projection

scholarly journals Development of very-thick transparent GEMs with wavelength-shifting capability for noble element TPCs

2021 ◽  
Vol 81 (7) ◽  
Author(s):  
M. Kuźniak ◽  
D. González-Díaz ◽  
P. Amedo ◽  
C. D. R. Azevedo ◽  
D. J. Fernández-Posada ◽  
...  
Keyword(s):  
Collection Efficiency ◽  
Noble Gas ◽  
Simultaneous Detection ◽  
Electrical Characterization ◽  
Polyethylene Naphthalate ◽  
Core Element ◽  
New Device ◽  
Time Projection Chambers ◽  
Neutrino Experiments ◽  
Time Projection

AbstractA new concept for the simultaneous detection of primary and secondary scintillation in time projection chambers is proposed. Its core element is a type of very-thick GEM structure supplied with transparent electrodes and machined from a polyethylene naphthalate plate, a natural wavelength shifter. Such a device has good prospects for scalability and, by virtue of its genuine optical properties, it can improve on the light collection efficiency, energy threshold and resolution of conventional micropattern gas detectors. This, together with the intrinsic radiopurity of its constituting elements, offers advantages for noble gas and liquid based time projection chambers, used for dark matter searches and neutrino experiments. Production, optical and electrical characterization, and first measurements performed with the new device are reported.

scholarly journals Horizontal position reconstruction in PandaX-II

2021 ◽  
Vol 16 (11) ◽  
pp. P11040
Author(s):  
D. Zhang ◽  
A. Tan ◽  
A. Abdukerim ◽  
W. Chen ◽  
X. Chen ◽  
...  
Keyword(s):  
Dark Matter ◽  
Noble Gas ◽  
Dual Phase ◽  
Horizontal Position ◽  
Reconstruction Algorithms ◽  
Dark Matter Search ◽  
Ionization Signal ◽  
Search Experiment ◽  
Position Reconstruction ◽  
Time Projection

Abstract Dual-phase noble-gas time projection chambers (TPCs) have improved the sensitivities for dark matter direct search in past decades. The capability of TPCs to reconstruct 3-D vertexes of keV scale recoilings is one of the most advantageous features. In this work, we develop two horizontal position reconstruction algorithms for the PandaX-II dark matter search experiment using the dual-phase liquid xenon TPC. Both algorithms are optimized by the 83mKr calibration events and use photon distribution of ionization signals among photomultiplier tubes to infer the positions. According to the events coming from the gate electrode, the uncertainties in the horizontal positions are 3.4 mm (3.9 mm) in the analytical (simulation-based) algorithm for an ionization signal with several thousand photon electrons in the center of the TPC.

scholarly journals Space Charge Effects in Noble-Liquid Calorimeters and Time Projection Chambers

Instruments ◽  
2021 ◽  
Vol 5 (1) ◽  
pp. 9
Author(s):  
Sandro Palestini
Keyword(s):  
Space Charge ◽  
Scaling Laws ◽  
Relative Size ◽  
Design Solution ◽  
Space Charge Effects ◽  
Charge Effects ◽  
Time Projection Chambers ◽  
Drift Length ◽  
Calibration Methods ◽  
Time Projection

The subject of space charge in ionization detectors is reviewed, showing how the observations and the formalism used to describe the effects have evolved, starting with applications to calorimeters and reaching recent, large time-projection chambers. General scaling laws, and different ways to present and model the effects are presented. The relations between space-charge effects and the boundary conditions imposed on the side faces of the detector are discussed, together with a design solution that mitigates some of the effects. The implications of the relative size of drift length and transverse detector size are illustrated. Calibration methods are briefly discussed.

scholarly journals Energy resolution and linearity of XENON1T in the MeV energy range

2020 ◽  
Vol 80 (8) ◽  
Author(s):  
E. Aprile ◽  
J. Aalbers ◽  
F. Agostini ◽  
M. Alfonsi ◽  
L. Althueser ◽  
...  
Keyword(s):  
Energy Resolution ◽  
Rare Events ◽  
Correction Method ◽  
Relative Energy ◽  
Double Beta Decay ◽  
Dual Phase ◽  
Readout System ◽  
Phase Time ◽  
Saturation Effects ◽  
Time Projection

Abstract Xenon dual-phase time projection chambers designed to search for weakly interacting massive particles have so far shown a relative energy resolution which degrades with energy above $$\sim $$∼ 200 keV due to the saturation effects. This has limited their sensitivity in the search for rare events like the neutrinoless double-beta decay of $$^{136} \hbox {Xe}$$136Xe at its Q value, $$Q_{\beta \beta }\simeq 2.46\,\hbox {MeV}$$Qββ≃2.46MeV. For the XENON1T dual-phase time projection chamber, we demonstrate that the relative energy resolution at $$1\,\sigma /\mu $$1σ/μ is as low as ($$0.80 \pm 0.02$$0.80±0.02) % in its one-ton fiducial mass, and for single-site interactions at $$Q_{\beta \beta }$$Qββ. We also present a new signal correction method to rectify the saturation effects of the signal readout system, resulting in more accurate position reconstruction and indirectly improving the energy resolution. The very good result achieved in XENON1T opens up new windows for the xenon dual-phase dark matter detectors to simultaneously search for other rare events.

Gas-filled detectors

2020 ◽  
pp. 171-254
Author(s):  
Hermann Kolanoski ◽  
Norbert Wermes
Keyword(s):  
Magnetic Fields ◽  
Particle Physics ◽  
Parallel Plate ◽  
Charged Particles ◽  
Aging Effects ◽  
Charge Generation ◽  
Detector Performance ◽  
Time Projection Chambers ◽  
Drift Chambers ◽  
Time Projection

Detectors that record charged particles through their ionisation of gases are found in many experiments of nuclear and particle physics. By conversion of the charges created along a track into electrical signals, particle trajectories can be measured with these detectors in large volumes, also inside magnetic fields. The operation principles of gaseous detectors are explained, which include charge generation, gas amplification, operation modes and gas mixtures. Different detector types are described in some detail, starting with ionisation chambers without gas amplification, proceeding to those with gas amplification like spark and streamer chambers, parallel plate arrangements, multi-wire proportional chambers, chambers with microstructured electrodes, drift chambers, and ending with time-projection chambers. The chapter closes with an overview of aging effects in gaseous detectors which cause negative alterations of the detector performance.

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