Azevedo, C. D. R., Cortesi, M., Lyashenko, A. V., Breskin, A., Chechik, R., Miyamoto, J., ...
The article deals with the detection efficiency of UV-photon detectors consisting of Thick Gas Electron Multipliers (THGEM) coated with CsI photocathode, operated in atmospheric Ne/CH4 and Ne/CF4...
Escada, J., Coelho, L. C. C., Lopes, J. A. M., Breskin, A.
Experimental measurements of the extraction efficiency f of the UV-induced photoelectrons emitted from a CsI photocathode into gas mixtures of Ne with CH4, CF4, CO2 and N2 are presented; they are...
THGEM operation in Ne and Ne/CH4 (2009)
Cortesi, M., Peskov, V., Bartesaghi, G., Miyamoto, J., Cohen, S., Chechik, R., ...
The operation of Thick Gaseous Electron Multipliers (THGEM) in Ne and Ne/CH4 mixtures, features high multiplication factors at relatively low operation potentials, in both single- and double-THGEM...
Development of high-gain gaseous photomultipliers for the visible spectral range (2009)
Lyashenko, A. V., Breskin, A., Chechik, R., Amaro, F. D.
We summarize the development of visible-sensitive gaseous photomultipliers, combining a semitransparent bi-alkali photocathode with a state-of-the-art cascaded electron multiplier. The latter has...
Lyashenko, A., Breskin, A., Chechik, R.
The operation of visible-sensitive gaseous- and, to some extent, vacuum-photomultipliers is critically affected by secondary electrons originating from ion impact on the photocathode. A simple method...
Some tests of a multigap projection chamber (2009)
Breskin, A, Charpak, Georges, Darriulat, Pierre, Geissler, K, Holder, M, Tittel, K
A concise review on THGEM detectors (2008)
Breskin, A., Alon, R., Cortesi, M., Chechik, R., Miyamoto, J., Dangendorf, V., ...
We briefly review the concept and properties of the Thick GEM (THGEM); it is a robust, high-gain gaseous electron multiplier, manufactured economically by standard printed-circuit drilling and...
Thick GEM versus thin GEM in two-phase argon avalanche detectors (2008)
Bondar, A., Buzulutskov, A., Grebenuk, A., Pavlyuchenko, D., Tikhonov, Y., Breskin, A.
The performance of thick GEMs (THGEMs) was compared to that of thin GEMs in two-phase Ar avalanche detectors, in view of their potential application in coherent neutrino-nucleus scattering,...
Lyashenko, A. V., Breskin, A., Chechik, R., Amaro, F. D.
A novel concept for ion blocking in gas-avalanche detectors was developed, comprising cascaded micro-hole electron multipliers with patterned electrodes for ion defocusing. This leads to ion blocking...
Further studies of the GEM photomultiplier (2007)
A. Buzulutskov, A. Breskin, R. Chechik, G. Garty, F. Sauli, L. Shekhtman
* Corresponding author. (2007)
G. Garty, A. Breskin, R. Chechik, E. Shefer
Single photoelectron detection with a low-pressure gas electron multiplier coupled to a CsI photocathode
G. Piantanida, A. Breskin, R. Chechik, O. Katz, A. Laikhtman, A. Hoffman, ...
The effect of moderate heating on the negative electron affinity and photoyield of air-exposed H-terminated CVD diamond
A. Akkerman, A. Breskin, R. Chechik, Y. Lifshitz
The stopping powers for 10 solid organic materials and water have been calculated in the range of proton energies 50-500 keV. Most of the presented results are new and are in good agreement with...
D. Mörmann, A. Breskin, R. Chechik, B. K. Singh
On the efficient operation of a CsI-coated
Measurement of Electromagnetically Produced (2007)
Gamma Pairs In, R. Baur, A. Breskin, R. Chechik, A. Drees, U. Faschingbauer, ...
We have for the first time identified e + e \Gamma -pairs produced by strongly varying electromagnetic fields in distant S-Pt collisions at 200 GeV/u projectile energy at the CERN-SPS. The...
BASED ON NANODOSIMETRIC EVENT SPECTRA (2007)
R. Schulte, V. Bashkirov, S. Shchemelinin, G. Garty, R. Chechik, A. Breskin, ...
Assuming that the number of ionizations events within short segments of DNA-size volumes is a major factor of the biological effectiveness of ionizing radiation, we have designed and manufactured a...
Investigations of a THGEM-based imaging detector (2007)
Cortesi, M., Alon, R., Chechik, R., Breskin, A., Vartsky, D., Dangendorf, V.
We present the results of our recent studies on a Thick Gas Electron Multiplier (THGEM)-based imaging detector prototype. It consists of two 100x100 mm^2 THGEM electrodes in cascade, coupled to a...
Further progress in ion back-flow reduction with patterned gaseous hole-multipliers (2007)
Lyashenko, A. V., Breskin, A., Chechik, R., Amaro, F. D.
A new idea on electrostatic deviation and capture of back-drifting avalanche-ions in cascaded gaseous hole-multipliers is presented. It involves a flipped reversed-bias Micro-Hole & Strip Plate...
Ion-counting nanodosemeter with particle tracking capabilities (2007)
Bashkirov, V., Schulte, R., Breskin, A., Chechik, R., Schemelinin, S., Garty, G., ...
An ion-counting nanodosemeter (ND) yielding the distribution of radiation-induced ions in a low-pressure gas within a millimetric, wall-less sensitive volume (SV) was equipped with a silicon...
Shchemelinin, S., Hilgers, G., Gargioni, E., Grosswendt, B., Breskin, A., Chechik, R.
Nanodosimetric spectra, measured in a well-defined ionisation sensitive volume of an ion-counting gaseous nanodosemeter, may have a valuable predictive value of radiation damage to DNA. In such...
First attempts at prediction of DNA strand-break yields using nanodosimetric data (2007)
Garty, G., Schulte, R., Shchemelinin, S., Grosswendt, B., Leloup, C., Assaf, G., ...
We present the first results of our attempts to correlate yields of ionisation clusters in a gas model of DNA and corresponding double-strand break (DSB) yields in irradiated plasmids, using a simple...
Shchemelinin, S., Hilgers, G., Gargioni, E., Grosswendt, B., Breskin, A., Chechik, R.
Nanodosimetric spectra, measured in a well-defined ionisation sensitive volume of an ion-counting gaseous nanodosemeter, may have a valuable predictive value of radiation damage to DNA. In such...
ION-COUNTING NANODOSEMETER WITH PARTICLE TRACKING CAPABILITIES (2007)
Bashkirov, V., Schulte, R., Breskin, A., Chechik, R., Schemelinin, S., Garty, G., ...
An ion-counting nanodosemeter (ND) yielding the distribution of radiation-induced ions in a low-pressure gas within a millimetric, wall-less sensitive volume (SV) was equipped with a silicon...
Amaro, F. D., Breskin, A., Lyashenko, A., Chechik, R.
We present a Photon-Assisted Cascaded Electron Multipliers (PACEM) which has a potential for ion back-flow blocking in gaseous radiation detectors: the avalanche from a first multiplication stage...
Advances in imaging THGEM-based detectors (2006)
Cortesi, M., Chechik, R., Breskin, A., Guedes, G., Dangendorf, V., Vartzky, D., ...
The thick GEM (THGEM) [1] is an "expanded" GEM, economically produced in the PCB industry by simple drilling and etching in G-10 or other insulating materials (fig. 1). Similar to GEM, its operation...
Thick GEM-like (THGEM) detectors and their possible applications (2006)
Chechik, R., Cortesi, M., Breskin, A., Vartsky, D., Bar, D., Dangendorf, V.
Thick GEM-like (THGEM) electrodes are robust, high gain gaseous electron multipliers, economically-manufactured by standard drilling and etching of thin printed circuit board or other materials....
Weissman, L., Gai, M., Breskin, A., Chechik, R., Dangendorf, V., Tittelmeier, K., ...
We studied electron amplification and light emission from avalanches in oxygen-containing gas mixtures. The mixtures investigated in this work included, among others, CO2 and N2O mixed with...
Shalem, C., Chechik, R., Breskin, A., Michaeli, K.
Thick GEM-like (THGEM) gaseous electron multipliers are made of standard printed-circuit board perforated with sub-millimeter diameter holes, etched at their rims. Effective gas multiplication...
Advances in Thick GEM-like gaseous electron multipliers. Part II: low-pressure operation (2006)
Shalem, C. K., Chechik, R., Breskin, A., Michaeli, K., Ben-Haim, N.
We present results on THGEM operation at low gas pressures, in the range 0.5-50 Torr. Gaseous gain up to 100000 was recorded at 10 Torr of Isobutane in a single multiplier element, with pulses...
Operation of MHSP multipliers in high pressure pure noble-gas (2006)
Amaro, F. D., Breskin, A., Chechik, R.
We report on the performance of a Micro-Hole & Strip Plate (MHSP) electron multiplier operating in pure Xe, Kr, Ar and Ne at the pressure range of 1 to 6 bar. The maximal gains at 1 bar Xe and Kr are...
FIRST ATTEMPTS AT PREDICTION OF DNA STRAND-BREAK YIELDS USING NANODOSIMETRIC DATA (2006)
Garty, G., Schulte, R., Shchemelinin, S., Grosswendt, B., Leloup, C., Assaf, G., ...
We present the first results of our attempts to correlate yields of ionisation clusters in a gas model of DNA and corresponding double-strand break (DSB) yields in irradiated plasmids, using a simple...
Wall-less Ion-counting Nanodosimetry Applied to Protons (2002)
Garty, G., Shchemelinin, S., Breskin, A., Chechik, R., Orion, I., P. Guedes, G., ...
A wall-less ion-counting nanodosemeter, conceived for precise ionisation-cluster measurements in an accelerator environment, is described. The technique provides an accurate means for counting single...
The GEM photomultiplier operated with noble gas mixtures (2000)
A. Buzulutskov, A. Breskin, R. Chechik, G. Garty, F. Sauli, L. Shekhtman
Advances in gas avalanche photomultipliers (1999)
A. Breskin, T. Boutboul, A. Buzulutskov, R. Chechik, G. Garty, E. Shefer, ...
Gas avalanche detectors, combining solid photocathodes with fast electron multipliers, provide an attractive solution for photon localization over very large sensitive areas and under high...
First Measurements of Ionisation Clusters on the DNA Scale in a Wall-less Sensitive Volume (1999)
Shchemelinin, S., Breskin, A., Chechik, R., Colautti, P., Schulte, R.W.M.
A nanodosimetric technique and first ionisation cluster spectra on the DNA scale are presented. Single radiation-induced ions are extracted through a small aperture from a wall-less sensitive volume...
Lifshitz, Y., Lempert, G.D., Grossman, E., Scheibe, H.J., Völlmar, S., Schultrich, B., ...
The optical and photoemission properties of hydrogen-free DLC films prepared under conditions which result in different types of carbon bonding (previously determined from electron energy loss...
Concept of a Neutron Dosemeter Based on a Recoil Particle Track Chamber (1997)
Titt, U., Breskin, A., Chechik, R., Dangendorf, V., Grosswendt, B., Schuhmacher, H.
A new experimental approach for a neutron dosemeter and spectrometer is presented. It is based on an optically read out time projection chamber (TPC). Charged particles entering a low-pressure...
Almeida, J., Amadon, A., Besson, P., Bourgeois, P., Braem, A., Breskin, A., ...
CsI photocathodes were studied in order to evaluate their potential use as large photoconverters in RICH detectors for the PID system at ALICE (LHC in heavy ion collider mode). It has been...
Microanalysis surface studies and photoemission properties of CsI photocathodes (1995)
Almeida, J., Braem, A., Breskin, A., Buzulutskov, A., Chechik, R., Cohen, S., ...
We present recent results of the study of surface properties and quantum efficiency (QE) of CsI photocathodes prepared on various substrates. Microanalysis methods provide laterally resolved surface...
Recent Results on the Properties of Csi Photocathodes (1995)
Berger, H., Besson, P., Bourgeois, P., Braem, A., Breskin, A., Buzulutskov, A., ...
We report here on the results obtained by the CERN RD26 collaboration on the production and characterization of large area photocathodes, susceptible to equip fast UV-photon imaging devices. Such...
A Single-Electron Counter for Nanodosimetry (1995)
Breskin, A., Chechik, R., Colautti, P., Conte, V., De Nardo, L., Pansky, A., ...
A detector has been devised able to measure with high resolution the primary ionisation yield in tissue-equivalent gas volumes of a few nanometres equivalent length. The sensitive ionisation volume...
Measurements of Ionisation Distribution Around a Particle Track at the Nanometre Level (1994)
Colautti, P., Talpo, G., Tornielli, G., Akkerman, A., Breskin, A.
Radiobiological data reveal that radiation action on the living cell is at the nanometre level. In this paper a new approach is proposed for the measurement of the radial radiation induced ionisation...