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Space charge accumulation within GEM holes is one of the vital phenomena which affects many of the key working parameters of the detector. This accumulation is found to be significantly affected by the initial primary charge configurations…

Pushing the limits in temporal resolution for transmission electron microscopy (TEM) requires a revolutionary change in the electron source technology. In this paper we study the possibility of employing a radiofrequency photoinjector as…

Accelerator Physics · Physics 2014-05-26 R. K. Li , P. Musumeci

We have constructed and tested a 2d position sensitive parallel-plate gas ionization chamber with scanned charge transfer readout. The scan readout method described here is based on the development of a new position dependent charge…

Instrumentation and Detectors · Physics 2009-11-10 F. Gomez , A. Iglesias , R. Lobato , J. Mosquera , J. Pardo , J. Pena , A. Pazos , M. Pombar , A. Rodriguez

Gas Electron Multiplier (GEM) detectors, typically featuring a standard pitch size of 140 $\mu$m and an inner hole diameter of 50 $\mu$m, are extensively utilized in high-energy physics experiments for tracking, triggering, and timing…

High Energy Physics - Experiment · Physics 2025-05-07 Rajiv Gupta , Gauri Devi , Sunidhi Saxena , Arpit Singh , Ajay Kumar

Direct comparisons between statistically sound simulations of ion-tracks and published experimental measurements of range densities of iodine implants in uranium dioxide have been made with implant energies in the range of 100-800 keV. Our…

Materials Science · Physics 2015-03-14 Byoungseon Jeon , Mark Asta , Steven M. Valone , Niels Grønbech-Jensen

We report on the effect of ambient gas on the contrast and the resolution of electron beam lithography (EBL) in gaseous environments on insulating substrates. Poly(methyl methacrylate) (PMMA) films were exposed in an environmental scanning…

Mesoscale and Nanoscale Physics · Physics 2025-05-07 Deepak Kumar , Cooper Meyers , RJ Smith , J. Todd Hastings

The central tracking system of the HADES detector, installed at the SIS-18 synchrotron at GSI/Darmstadt (Germany), employs large-area, low-mass drift chambers, featuring Aluminum potential wires and small cell sizes. The chambers in front…

Instrumentation and Detectors · Physics 2024-03-20 Christian Wendisch , Christian Muentz , Luis Lopes , Erwin Schwab , Joachim Stroth

Small-diameter Drift Tube (sMDT) detectors with 15 mm tube diameter have proven to be excellent candidates for precision muon tracking detectors in experiments at future hadron colliders like HL-LHC and FCC-hh where unprecedentedly high…

Instrumentation and Detectors · Physics 2021-12-13 G. H. Eberwein , O. Kortner , H. Kroha , E. Voevodina

A prototype Dual Gain Multilayer Thick Gas Electron Multilyer (DG-M-THGEM) with an active area of 10 cm $\times$ 10 cm was manufactured aiming at the production of a large-volume active-target time projection chamber which can work under…

Single charge detection with nanoscale spatial resolution in ambient conditions is a current frontier in metrology that has diverse interdisciplinary applications. Here, such single charge detection is demonstrated using two…

Noise and Malter breakdown have been studied at high rates in a test chamber having the same cell structure and gas as in the BaBar drift chamber. The chamber was first damaged by exposing it to a high source level at an elevated high…

High Energy Physics - Experiment · Physics 2011-07-19 Adam Boyarski

We report on the successful operation of a double phase Liquid Argon Large Electron Multiplier Time Projection Chamber (LAr LEM-TPC) equipped with two dimensional projective anodes with dimensions 10$\times$10 cm$^2$, and with a maximum…

Instrumentation and Detectors · Physics 2015-06-18 C. Cantini , L. Epprecht , A. Gendotti , S. Horikawa , S. Murphy , G. Natterer , L. Periale , F. Resnati , A. Rubbia , F. Sergiampietri , T. Viant , S. Wu

We report the detection of single ion impacts through monitoring of changes in the source-drain currents of field effect transistors (FET) at room temperature. Implant apertures are formed in the interlayer dielectrics and gate electrodes…

Other Condensed Matter · Physics 2009-11-13 A. Batra , C. D. Weis , J. Reijonen , A. Persaud , S. Cabrini , C. C. Lo , J. Bokor , T. Schenkel

In a focused ion beam (FIB) microscope, source particles interact with a small volume of a sample to generate secondary electrons that are detected, pixel by pixel, to produce a micrograph. Randomness of the number of incident particles…

Medical Physics · Physics 2023-08-15 Minxu Peng , John Murray-Bruce , Vivek K Goyal

We report on the systematic study of a single-gas-electron-multiplication (GEM) loaded gaseous detector developed for precision measurements of high-energy particle beams and dose-verification measurements. In the present study, a…

Instrumentation and Detectors · Physics 2014-07-29 Kyong Sei Lee , Byungsik Hong , Sang Yeol Kim , Sung Keun Park

The reconstruction of particle trajectories makes it possible to distinguish between different types of charged particles. In high-energy physics, where trajectories are rather long, large size trackers must be used to achieve sufficient…

We have operated a Medipix2 CMOS readout chip, with amplifying, shaping and charge discriminating front-end electronics integrated on the pixel-level, as a highly segmented direct charge collecting anode in a three-stage gas electron…

Instrumentation and Detectors · Physics 2008-11-26 A. Bamberger , K. Desch , U. Renz , M. Titov , N. Vlasov , P. Wienemann , A. Zwerger

The GPU-accelerated track finding method is investigated to track electrons from neutrinoless muon decay in the COMET Phase-I experiment. Inside the cylindrical drift chamber, one third of the signal electron trajectories are composed of…

Instrumentation and Detectors · Physics 2019-10-25 Beomki Yeo , Myeong Jae Lee , Yannis K. Semertzidis , Yoshitaka Kuno

The HELIX cosmic-ray detector is a balloon-borne instrument designed to measure the flux of light isotopes in the energy range from 0.2 GeV/n to beyond 3 GeV/n. It will rely on a ring-imaging Cherenkov (RICH) detector for particle…

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