Event Index — an LHCb Event Search System. Issue 3 (December 2015)

• Record Type: Journal Article
• Authors: Ustyuzhanin, A; Artemov, A; Kazeev, N; Redkin, A
• Is Part Of: Journal of physics. Volume 664:Issue 3(2015)
• Publication Date: 2015-12
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/664/3/032019
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: During LHC Run 1, the LHCb experiment recorded around 10 11 collision events. This paper describes Event Index — an event search system. Its primary function is to quickly select subsets of events from a combination of conditions, such as the estimated decay channel or number of hits in a subdetector. Event Index is essentially Apache Lucene [1] optimized for read-only indexes distributed over independent shards on independent nodes.