New operator assistance features in the CMS Run Control System

Journal Article · Thu Nov 23 00:00:00 EST 2017 · Journal of Physics. Conference Series

DOI:https://doi.org/10.1088/1742-6596/898/3/032028· OSTI ID:1420920

Andre, J-M ^[1]; Behrens, U. ^[2]; Branson, J. ^[3]; Brummer, P. ^[4]; Chaze, O. ^[5]; Cittolin, S. ^[3]; Contescu, C. ^[1]; Craigs, B. G. ^[5]; Darlea, G-L ^[6]; Deldicque, C. ^[5]; Demiragli, Z. ^[6]; Dobson, M. ^[5]; Doualot, N. ^[1]; Erhan, S. ^[7]; Fulcher, J. R. ^[5]; Gigi, D. ^[5]; Gładki, M. ^[5]; Glege, F. ^[5]; Gomez-Ceballos, G. ^[6]; Hegeman, J. ^[5] ; Holzner, A. ^[3]; Janulis, M. ^[8]; Jimenez-Estupiñán, R. ^[5]; Masetti, L. ^[5]; Meijers, F. ^[5]; Meschi, E. ^[5]; Mommsen, R. K. ^[1]; Morovic, S. ^[5]; O’Dell, V. ^[1]; Orsini, L. ^[5]; Paus, C. ^[6]; Petrova, P. ^[5]; Pieri, M. ^[3]; Racz, A. ^[5]; Reis, T. ^[5]; Sakulin, H. ^[5]; Schwick, C. ^[5]; Simelevicius, D. ^[8]; Vougioukas, M. ^[5]; Zejdl, P. ^[9]

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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); Karlsruhe Univ. of Applied Sciences, Karlsruhe (Germany)
5. European Organization for Nuclear Research (CERN), Geneva (Switzerland)
6. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
7. Univ. of California, Los Angeles, CA (United States)
8. European Organization for Nuclear Research (CERN), Geneva (Switzerland); Vilnius Univ., Vilnius (Lithuania)
9. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); European Organization for Nuclear Research (CERN), Geneva (Switzerland)

During Run-1 of the LHC, many operational procedures have been automated in the run control system of the Compact Muon Solenoid (CMS) experiment. When detector high voltages are ramped up or down or upon certain beam mode changes of the LHC, the DAQ system is automatically partially reconfigured with new parameters. Certain types of errors such as errors caused by single-event upsets may trigger an automatic recovery procedure. Furthermore, the top-level control node continuously performs cross-checks to detect sub-system actions becoming necessary because of changes in configuration keys, changes in the set of included front-end drivers or because of potential clock instabilities. The operator is guided to perform the necessary actions through graphical indicators displayed next to the relevant command buttons in the user interface. Through these indicators, consistent configuration of CMS is ensured. However, manually following the indicators can still be inefficient at times. A new assistant to the operator has therefore been developed that can automatically perform all the necessary actions in a streamlined order. If additional problems arise, the new assistant tries to automatically recover from these. With the new assistant, a run can be started from any state of the sub-systems with a single click. An ongoing run may be recovered with a single click, once the appropriate recovery action has been selected. We review the automation features of CMS Run Control and discuss the new assistant in detail including first operational experience.

• 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: 1420920
• Report Number(s): CMS-CR-2017-039; FERMILAB-CONF-16-758-PPD; 1638253
• 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 Publishing
• Country of Publication: United States
• Language: English

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