Charge transfer considerations of MicroCAT-based detector systems

Orthen, A.; Wagner, H.; Besch, H.J.; Menk, R.H.; Walenta, A.H.

doi:10.1016/s0168-9002(02)01276-7

Cited by 5 publications

(25 citation statements)

References 17 publications

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“…With the ability to increase the beam injection rates in the MSTPC combined with a large gain in the THGEM, the effects of positive-ion feedback becomes important, even for low ratios <2%, as it can result in enough positive ions to distort the local electric field of the drift region [65]. A model of electric field distortion due to positive ion feedback has been made as presented Ishiyama et al [22], which is based on Orthen et al [65].…”

Section: Multi-sampling and Tracking Proportional Counter (Mstpc)mentioning

confidence: 99%

“…A model of electric field distortion due to positive ion feedback has been made as presented Ishiyama et al [22], which is based on Orthen et al [65]. The distortions in the electric field due to the backflow of positive ions were modeled as a static pillar of positive charge, which represents the average amount of positive charge for a given beam rate, amplification gain, and backflow percentage.…”

Section: Multi-sampling and Tracking Proportional Counter (Mstpc)mentioning

confidence: 99%

See 1 more Smart Citation

Active targets for the study of nuclei far from stability

Beceiro-Novo

Ahn

Bazin

et al. 2015

Progress in Particle and Nuclear Physics

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Section: Multi-sampling and Tracking Proportional Counter (Mstpc)mentioning

confidence: 99%

Section: Multi-sampling and Tracking Proportional Counter (Mstpc)mentioning

confidence: 99%

Active targets for the study of nuclei far from stability

Beceiro-Novo

Ahn

Bazin

et al. 2015

Progress in Particle and Nuclear Physics

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“…Since this charge amount is too small to be detected additional amplification is necessary. For that purpose micro pattern devices like Mi-croCAT (micro compteur à trous) (Sarvestani et al, 1998b) or GEM (Sauli, 1997) have been intensively tested (Sarvestani et al, 1999b;Orthen et al, 2002;Orthen et al, 2003b;Orthen et al, 2003a). The MicroCAT has many advantages like stable gas gaining at high rates, time stability or an enormous robustness.…”

Section: Detector Setupmentioning

confidence: 99%

Development of a two-dimensional virtual-pixel X-ray imaging detector for time-resolved structure research

Orthen¹,

Wagner²,

Martoiu³

et al. 2004

J Synchrotron Radiat

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An interpolating two-dimensional X-ray imaging detector based on a single photon counter with gas amplification by GEM (gas electron multiplier) structures is presented. The detector system can be used for time-resolved structure research down to the µs-time domain. The prototype detector has been tested at the SAXS beamline at ELET-TRA synchrotron light source with a beam energy of 8 keV to test its capabilities in the rough beamline environment. The imaging performance is examined with apertures and standard diffraction targets. Finally, the application in a time-resolved lipid temperature jump experiment is presented.

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“…A more detailed description of the charge transfer simulation can be found in Ref. [14]. The results of the simulation for the electron transparency ε and ion feedback δ are shown in Fig.…”

Section: Simulationsmentioning

confidence: 99%

“…The MicroCAT structure (see Fig. 1) has been optimised with respect to maximum electron transparency and minimum ion feedback while retaining a good mechanical stability [14]. The parameters of the newly built device are given together with those of previously used MicroCATs in Table 1.…”

Section: Characteristicsmentioning

confidence: 99%

Investigation of the performance of an optimised MicroCAT, a GEM and their combination by simulations and current measurements

Orthen

Wagner

Besch

et al. 2003

Nuclear Instruments and Methods in Physics Research Section A:

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A MicroCAT (Micro Compteurà Trous) structure which is used for avalanche charge multiplication in gas filled radiation detectors has been optimised with respect to maximum electron transparency and minimum ion feedback. We report on the charge transfer behaviour and the achievable gas gain of this device. A threedimensional electron and ion transfer simulation is compared to results derived from electric current measurements. Similarly, we present studies of the charge transfer behaviour of a GEM (Gas Electron Multiplier) by current measurements and simulations. Finally, we investigate the combination of the MicroCAT and the GEM by measurements with respect to the performance at different voltage settings, gas mixtures and gas pressures.

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Charge transfer considerations of MicroCAT-based detector systems

Cited by 5 publications

References 17 publications

Active targets for the study of nuclei far from stability

Active targets for the study of nuclei far from stability

Development of a two-dimensional virtual-pixel X-ray imaging detector for time-resolved structure research

Investigation of the performance of an optimised MicroCAT, a GEM and their combination by simulations and current measurements

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