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Title: Performance of the CMS Event Builder

Journal Article · · Journal of Physics. Conference Series
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  1. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  2. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
  3. Univ. of California, San Diego, CA (United States)
  4. European Organization for Nuclear Research (CERN), Geneva (Switzerland)
  5. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  6. Univ. of California, Los Angeles, CA (United States)
  7. European Organization for Nuclear Research (CERN), Geneva (Switzerland); Vilnius Univ., Vilnius (Lithuania)
  8. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); European Organization for Nuclear Research (CERN), Geneva (Switzerland)
+ Show Author Affiliations

The data acquisition system (DAQ) of the CMS experiment at the CERN Large Hadron Collider assembles events at a rate of 100 kHz, transporting event data at an aggregate throughput of to the high-level trigger farm. The DAQ architecture is based on state-of-the-art network technologies for the event building. For the data concentration, 10/40 Gbit/s Ethernet technologies are used together with a reduced TCP/IP protocol implemented in FPGA for a reliable transport between custom electronics and commercial computing hardware. A 56 Gbit/s Infiniband FDR Clos network has been chosen for the event builder. This paper presents the implementation and performance of the event-building system.

Research Organization:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Grant/Contract Number:
AC02-07CH11359
OSTI ID:
1420921
Report Number(s):
CMS-CR-2017-034; FERMILAB-CONF-16-759-PPD; 1638249
Journal Information:
Journal of Physics. Conference Series, Vol. 898, Issue 3; Conference: 22nd International Conference on Computing in High Energy and Nuclear Physics, San Francisco, CA (United States), 10-14 Oct 2016; ISSN 1742-6588
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English

Figures / Tables (7)

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Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS