Abstract Caverns for large physics detectors, such as the one Large Hadron Collider experiments, sit nearly 100 m underground and measure several tens of meters in length, width height. The deformation cavern base slab over decades has a direct influence on relative alignment detectors with respect to accelerator. expected long-term movements are larger than fine adjustment accelerators. In thi...

To prevent climate change, Europe and the world must shift to low-carbon renewable energies. Hydrogen, as an energy vector, provides viable solutions for replacing polluting carbon-emitting fossil fuels. Gaseous hydrogen can be stored underground coupled with existing natural gas pipe networks. Salt cavern storage is best suited technology meet challenges of new systems. Hydrogen caverns are cu...

The upgrade of the ALICE TPC will allow experiment to cope with high interaction rates foreseen for forthcoming Run 3 and 4 at CERN LHC. In this article, we describe design new readout chambers front-end electronics, which are driven by goals experiment. Gas Electron Multiplier (GEM) detectors arranged in stacks containing four GEMs each, continuous electronics based on SAMPA chip, an developme...

So-called annual banding has been identified in a number of speleothems in which the number of bands approximates the time interval between successive U-series dates. The apparent annual resolution of speleothem records, however, remains largely untested. Here we statistically compare variations in band thickness from a late Holocene stalagmite in Carlsbad Cavern, Southern New Mexico, USA, with...

We are presenting new results on kinematics and structure of the Mrk 334 Seyfert galaxy. Panoramic (3D) spectroscopy is performed at the 6-m telescope of the Special Astrophysical Observatory of the Russian Academy of Sciences using the MPFS integral-field spectrograph and scanning Fabry–Pérot interferometer. The deep images have revealed that Mrk 334 is observed during the final stage of its m...

S resulting in sinkholes within dissolution mine fields in and around the city of Hutchinson, Kansas, USA (Figure 1) has been reported for more than 90 years. Salt dissolution and the resulting unpredictable upward migration of the dissolution voids can be observed both in proximity to well bores (dissolution mining, brine disposal, and oil wells; seismic shot holes, etc.) and in areas known to...

A rockbolt acting in the rock mass is subjected to combined action of pull-out load and confining pressure, bond quality directly affects stability roadway cavern. Therefore, this study, pressure are applied grouted systems with defects by a numerical simulation method, detected ultrasonic guided waves study propagation law defective rockbolts under pressure. The results show that length locati...

In the endcap region of the ATLAS Muon Spectrometer (η > 1) precision tracking and Level-1 triggering are performed by different types of chambers. Monitored Drift Tube chambers (MDT) and Cathode Strip Chambers (CSC) are used for precision tracking, while Thin Gap Chambers (TGC) form the Level-1 muon trigger, selecting muons with high transverse momentum (pT ). When by 2018 the LHC peak luminos...