The effective transfer of sample problem is relevant in modern analytical equipment. The paper considered a problem in detection trace concentrations of explosives by Ion Mobility Spectrometry (IMS). The investigation deals with sample adsorption on the walls of transport tubes, the ion drift chamber and the chamber of the ion source in ion mobility spectrometer. The sample losses on inlet chan...

A small liquid argon Time Projection Chamber (LAr TPC) was operated for the first time in a magnetic field of 0.55T. The imaging properties of the detector were not affected by the magnetic field. In a test run with cosmic rays a sample of through going and stopping muons was collected. The chamber with the readout electronics and the experimental setup are described. A few selected events were...

Monitored Drift Tube (MDT) chambers will constitute the large majority of precision detectors in the Muon Spectrometer of the ATLAS experiment at the Large Hadron Collider at CERN. For commissioning and calibration of MDT chambers, a Cosmic Ray Measurement Facility is in operation at Munich University. The objectives of this facility are to test the chambers and on-chamber electronics, to map t...

A field programmable gate array (FPGA)-based online trigger system has been developed for the COherent Muon To Electron Transition (COMET) Phase-I experiment, which searches muon-to-electron conversion as a signature of New Physics beyond Standard Model. drift chamber and counters are devised to detect mono-energetic electron from process in 1-T solenoidal magnetic field. highly intense muon so...

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 voltage, until its operating current at normal voltages was only ~0.5nA/cm. Additives such as water or alcohol allowed the damaged chamber to operate at 25 nA/cm,...

This paper describes the small-diameter monitored drift-tube detector construction at University of Michigan as a contribution to ATLAS Muon Spectrometer upgrade for high-luminosity Large Hadron Collider CERN. Measurements first 30 chambers built show that drift tube wire position accuracy meets specification 20 microns. The positions platforms alignment and magnetic field sensors are all insta...