Measurements with the KATRIN pre-spectrometer

High-voltage monitoring with a solenoid retarding spectrometer at the KATRIN experiment

The KATRIN experiment will measure the absolute mass scale of neutrinos with a sensitivity of mν = 200 meV/c2 by means of an electrostatic spectrometer set close to the tritium β decay endpoint at 18.6 keV. Fluctuations of the energy scale must be under control within±60 mV (±3 ppm). Since a precise voltage measurement in the range of tens of kV is on the edge of current 1Corrisponding author. ...

Precise Measurements of Atmospheric Muon Fluxes with the BESS Spectrometer

The vertical absolute fluxes of atmospheric muons and muon charge ratio have been measured precisely at different geomagnetic locations by using the BESS spectrometer. The observations had been performed at sea level (30 m above sea level) in Tsukuba, Japan, and at 360 m above sea level in Lynn Lake, Canada. The vertical cutoff rigidities in Tsukuba (36.2◦N ,140.1◦E) and in Lynn Lake (56.5◦N ,1...

Status of the KATRIN experiment

The aim of the Karlsruhe Tritium Neutrino experiment-KATRIN-is the direct measurement of the anti-neutrino mass with a sensitivity of 200 meV/c 2 (90% C.L.). It is based on the study of the endpoint region of tritium β decay where a non-vanishing anti-neutrino mass causes a distortion of the β spectrum. KATRIN will allow to probe a part of the cosmology-relevant neutrino mass parameter space an...

Measurements with an innovative high energy resolution Thomson Parabola Spectrometer

In recent years a new concept of particle acceleration has gained interest. It is based on high power, short pulse lasers interacting with thin metal foils. In the interaction process the target is suddenly ionized and the charge separation, originating from different phenomena, can efficiently accelerate ions and in particular protons from the target impurities. The peculiar characteristics of...

Air Filters Components Activity Measurements with HpGe Gamma Spectrometer