[en] The ATLAS trigger system consists of the hardware-based Level 1 (LVL1), and the software-based high-level trigger (HLT), containing Level 2 (LVL2) and event filter (EF). In order to extract information of interest from high-cross-section background in p-p collisions, this system needs to be highly selective. The trigger decision is taken in a consecutive step decision system. Implementation of monitoring software for HLT is necessary for ensuring its correct functionality. The HLT runs on a complex farm system, therefore, gathering information on farm parameters, calculating averages, standard deviations, implementing warning mechanisms and presenting information from each node is of great importance. All of the monitoring information needs to be presented in a user friendly way, which would enable fast and easy error handling for shifter and expert. In addition, it needs to be prepared for different physics scenarios, and expected major changes in the first year of ATLAS data taking. A flexible and easily readable system for presenting both, HLT and farm information, is needed to give a relevant overview of operational status of this complex system. In the scope of getting ready for first ATLAS measurements planned for 2008, the HLT monitoring software, software for gathering information from farms and software for presenting HLT overall information to the shift are to be tested in DESY-Zeuthen and during technical runs in CERN at the beginning of 2007. (orig.)

[en] We present a study on the possibility of searching for long-lived supersymmetric partners with the MoEDAL experiment at the LHC. MoEDAL is sensitive to highly ionising objects such as magnetic monopoles or massive (meta)stable electrically charged particles. We focus on prospects of directly detecting long-lived sleptons in a phenomenologically realistic model which involves an intermediate neutral long-lived particle in the decay chain. This scenario is not yet excluded by the current data from ATLAS or CMS, and is compatible with astrophysical constraints. Using Monte Carlo simulation, we compare the sensitivities of MoEDAL versus ATLAS in scenarios where MoEDAL could provide discovery reach complementary to ATLAS and CMS, thanks to looser selection criteria combined with the virtual absence of background. It is also interesting to point out that, in such scenarios, in which charged staus are the main long-lived candidates, the relevant mass range for MoEDAL is compatible with a potential role of Supersymmetry in providing an explanation for the anomalous events observed by the ANITA detector.