NDLI: The ATLAS event builder

Content Provider	IEEE Xplore Digital Library
Author	Vandelli, W. Abolins, M. Battaglia, A. Beck, H.P. Blair, R. Bogaerts, A. Bosman, M. Ciobotaru, M. Cranfield, R. Crone, G. Dawson, J. Dobinson, R. Dobson, M. Dos Anjos, A. Drake, G. Ermoline, Y. Ferrari, R. Ferrer, M.L. Francis, D. Gadomski, S. Gameiro, S. Gorini, B. Green, B. Haberichter, W. Haberli, C. Hauser, R. Hinkelbein, C. Hughes-Jones, R. Joos, M. Kieft, G. Klous, S. Korcyl, K. Kordas, K. Kugel, A. Leahu, L. Lehmann, G. Martin, B. Mapelli, L. Meessen, C. Meirosu, C. Misiejuk, A. Mornacchi, G. Muller, M. Nagasaka, Y. Negri, A. Pasqualucci, E. Pauly, T. Petersen, J. Pope, B. Schlereth, J. Spiwoks, R. Stancu, S. Strong, J. Sushkov, S. Szymocha, T. Tremblet, L. Unel, G. Vermeulen, J. Werner, P. Wheeler-Ellis, S. Wickens, F. Wiedenmann, W. Yu, M. Yasu, Y. Zhang, J. Zobernig, H.
Copyright Year	2007
Description	Author affiliation: Univ. of Bern, Bern (Vandelli, W.)
Abstract	Event data from proton-proton collisions at the LHC will be selected by the ATLAS experiment in a three-level trigger system, which, at its first two trigger levels (LVL1+LVL2), reduces the initial bunch crossing rate of 40 MHz to ~3 kHz. At this rate, the Event Builder collects the data from the readout system PCs (ROSs) and provides fully assembled events to the Event Filter (EF). The EF is the third trigger level and its aim is to achieve a further rate reduction to ~200 Hz on the permanent storage. The Event Builder is based on a farm of 0(100) PCs, interconnected via a Gigabit Ethernet to 0(150) ROSs. These PCs run Linux and multi-threaded software applications implemented in C++. All the ROSs, and substantial fractions of the Event Builder and Event Filter PCs have been installed and commissioned. We report on performance tests on this initial system, which is capable of going beyond the required data rates and bandwidths for Event Building for the ATLAS experiment.
Starting Page	120
Ending Page	126
File Size	293573
Page Count	7
File Format	PDF
ISBN	9781424409228
ISSN	10957863
DOI	10.1109/NSSMIC.2007.4436300
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-10-26
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Personal communication networks Filters Laboratories Nuclear and plasma sciences Large Hadron Collider Assembly systems Educational institutions Nuclear physics Ethernet networks Linux
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in