دانلود رایگان مقاله Tesla: نرم افزار برای تحلیل داده زمان واقعی در فیزیک با انرژی بالا

Abstract

Upgrades to the LHCb computing infrastructure in the first long shutdown of the LHC have allowed for high quality decay information to be calculated by the software trigger making a separate offline event reconstruction unnecessary. Furthermore, the storage space of the triggered candidate is an order of magnitude smaller than the entire raw event that would otherwise need to be persisted. Tesla is an application designed to process the information calculated by the trigger, with the resulting output used to directly perform physics measurements.

6. Summary

The Tesla toolkit allows for analyses to be based on the event reconstruction that is performed by the LHCb HLT. By design, the Tesla output files are compatible with existing analysis framework software with minimal changes required from analysts. The event reconstruction performed by the HLT is of sufficient quality for use in physics analyses because the detector is aligned and calibrated in real time during data taking. This is in turn made possible through the upgraded computing infrastructure introduced in the first long shutdown of the LHC and the decision to buffer data from the first software trigger level. The successful commissioning of this concept in 2015 has allowed multiple analyses to be performed based on this model. The higher output rates of the LHCb upgrade will make the approach increasingly necessary.