Particle tracking with a Timepix based triple GEM detector

George, S.; Murtas, F.; Alozy, J.; Curioni, A.; Rosenfeld, Anatoly B.; Silari, M.

doi:10.1088/1748-0221/10/11/p11003

Cited by 16 publications

(12 citation statements)

References 31 publications

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“…1 GOhm resistors connecting the wires provide the partition of the HV through the field cage, that is provided by an external CAEN N1470 power supply. The GEMPix is obtained coupling three standard CERN thin GEMs with a 3 × 3 cm 2 active area to a Quad-Timepix ASIC with 262,144 pixels for readout, directly sensitive to the deposited charge (without any silicon sensors installed on top) [10]. A picture and a schematic of NITEC is shown in Fig.…”

Section: The Nitec Detectormentioning

confidence: 99%

Negative Ion Time Projection Chamber operation with SF₆at nearly atmospheric pressure

et al. 2018

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A: We present measurements of drift velocities and mobilities of some innovative negative ion gas mixtures at nearly atmospheric pressure based on SF 6 as electronegative capture agent and of pure SF 6 at various pressures, performed with the NITEC detector. NITEC is a Time Projection Chamber with 5 cm drift distance readout by a GEMPix, a triple thin GEMs coupled to a Quad-Timepix chip, directly sensitive to the deposited charge on each of the 55 × 55 µm 2 pixel. Our results contribute to expanding the knowledge on the innovative use of SF 6 as negative ion gas and extend to triple thin GEMs the possibility of negative ion operation for the first time. Above all, our findings show the feasibility of negative ion operation with He:CF 4 :SF 6 at 610 Torr, opening extremely interesting possibility for next generation directional Dark Matter detectors at 1 bar. K: Charge transport and multiplication in gas, Gaseous imaging and tracking detectors,

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Section: The Nitec Detectormentioning

confidence: 99%

Negative Ion Time Projection Chamber operation with SF₆at nearly atmospheric pressure

et al. 2018

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“…Thin walls will need to be used to contain the gas, but this requirement is limited to the surfaces crossed by the muons. The replacement of traditional GEMs with high-granularity detectors like GEMPix [79] or GridPix [80] could provide an extremely high capability of resolving multiple tracks crossing the detector within ∆t < 1 µs, so that the same technology could be used for future upgrades of the experiment, when pileup could become an issue. Also for a TPC, a scintillator has to provide the starting time for the drift distance measurement.…”

Section: Muon Taggermentioning

confidence: 99%

Search for a muon EDM using the frozen-spin technique

Adelmann,

Backhaus,

Barajas

et al. 2021

Preprint

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This letter of intent proposes an experiment to search for an electric dipole moment of the muon based on the frozen-spin technique. We intend to exploit the high electric field, E = 1 GV/m, experienced in the rest frame of the muon with a momentum of p = 125 MeV/c when passing through a large magnetic field of | B| = 3 T. Current muon fluxes at the µE1 beam line permit an improved search with a sensitivity of σ(dµ) ≤ 6 × 10 −23 e•cm, about three orders of magnitude more sensitivity than for the current upper limit of |dµ| ≤ 1.8 × 10 −19 e•cm (C.L. 95%). With the advent of the new high intensity muon beam, HIMB, and the cold muon source, muCool, at PSI the sensitivity of the search could be further improved by tailoring a re-acceleration scheme to match the experiments injection phase space. While a null result would set a significantly improved upper limit on an otherwise un-constrained Wilson coefficient, the discovery of a muon EDM would corroborate the existence of physics beyond the Standard Model.

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“…Beams for clinical comissioning were characterized for each of the available beam currents including F10 and beam properties do not depend on the 1Other, cheaper gas mixtures such as Ar:CO 2 could be used instead. However, the fast drift velocity of Ar:CO 2 :CF 4 is needed in other applications of the GEMPix to reduce the lateral electron diffusion and therefore to increase the cluster analysis performance [12].…”

Section: Experimental Setup At Cnaomentioning

confidence: 99%

3D energy deposition measurements with the GEMPix detector in a water phantom for hadron therapy

Leidner¹,

Ciocca²,

George³

et al. 2018

J. Inst.

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In this paper we present 3D measurements of the energy deposition by a clinical carbon ion beam in a water phantom. Conventionally, these measurements are performed with an array of ionization chambers and used for quality assurance. The spatial resolution is typically not better than 5 mm. We used the GEMPix, a gaseous detector with a highly pixelated readout and much better spatial resolution. The GEMPix was obtained by coupling a triple Gas Electron Multiplier (GEM) to a quad Timepix ASIC with 512×512 pixels and 55 µm pitch. The Bragg curve, 2D images of the beam and a 3D reconstruction of the energy deposition are obtained from a single depth scan performed in approximately 15 minutes. A separate linearity check was also performed. The detector response is well linear and the measured Bragg curve is very smooth with uncertainties of a few percent. 3D energy deposition measurements in a water phantom with the GEMPix provide better spatial resolution than conventional devices. Systematic differences in the Bragg curve in comparison to the reference one are still too large for clinical use but work on several improvements is on-going.

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Particle tracking with a Timepix based triple GEM detector

Cited by 16 publications

References 31 publications

Negative Ion Time Projection Chamber operation with SF₆at nearly atmospheric pressure

Negative Ion Time Projection Chamber operation with SF₆at nearly atmospheric pressure

Search for a muon EDM using the frozen-spin technique

3D energy deposition measurements with the GEMPix detector in a water phantom for hadron therapy

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Particle tracking with a Timepix based triple GEM detector

Cited by 16 publications

References 31 publications

Negative Ion Time Projection Chamber operation with SF6at nearly atmospheric pressure

Negative Ion Time Projection Chamber operation with SF6at nearly atmospheric pressure

Search for a muon EDM using the frozen-spin technique

3D energy deposition measurements with the GEMPix detector in a water phantom for hadron therapy

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Product

Resources

About

Negative Ion Time Projection Chamber operation with SF₆at nearly atmospheric pressure

Negative Ion Time Projection Chamber operation with SF₆at nearly atmospheric pressure