CERN Accelerating science

CMS Note
Report number	CMS-CR-2017-039
Title	New operator assistance features in the CMS Run Control System
Author(s)	Andre, Jean-Marc Olivier (Fermilab) ; Behrens, Ulf (DESY) ; Branson, James (UC, San Diego) ; Brummer, Philipp Maximilian (CERN) ; Chaze, Olivier (CERN) ; Cittolin, Sergio (UC, San Diego) ; Contescu, Cristian (Fermilab) ; Craigs, Benjamin Gordon (CERN) ; Darlea, Georgiana Lavinia (MIT) ; Deldicque, Christian (CERN) ; Demiragli, Zeynep (MIT) ; Dobson, Marc (CERN) ; Doualot, Nicolas (Fermilab) ; Erhan, Samim (UCLA) ; Fulcher, Jonathan F (CERN) ; Gigi, Dominique (CERN) ; Michail Gładki (CERN) ; Glege, Frank (CERN) ; Gomez Ceballos, Guillelmo (MIT) ; Hegeman, Jeroen Guido (CERN) ; Holzner, Andre Georg (UC, San Diego) ; Janulis, Mindaugas (Vilnius U. ; CERN) ; Jimenez Estupinan, Raul (CERN) ; Masetti, Lorenzo (CERN) ; Meijers, Franciscus (CERN) ; Meschi, Emilio (CERN) ; Mommsen, Remigius (Fermilab) ; Morovic, Srecko (Fermilab ; CERN) ; O'Dell, Vivian (Fermilab) ; Orsini, Luciano (CERN) ; Paus, Christoph Maria Ernst (MIT) ; Petrova, Petia (ISER, Sofia ; CERN) ; Pieri, Marco (UC, San Diego) ; Racz, Attila (CERN) ; Reis, Thomas (CERN) ; Sakulin, Hannes (CERN) ; Schwick, Christoph (CERN) ; Simelevicius, Dainius (Vilnius U. ; CERN) ; Zejdl, Petr (Fermilab ; CERN) ; Vougioukas, M. (CERN)
Publication	2017
Imprint	16 Feb 2017
Number of pages	8
In:	J. Phys.: Conf. Ser. 898 (2017) 032028
In:	22nd International Conference on Computing in High Energy and Nuclear Physics, CHEP 2016, San Francisco, Usa, 10 - 14 Oct 2016, pp.032028
DOI	10.1088/1742-6596/898/3/032028
Subject category	Detectors and Experimental Techniques
Accelerator/Facility, Experiment	CERN LHC ; CMS
Abstract	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.
Copyright/License	publication: (License: CC-BY-3.0)

Corresponding record in: Inspire