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1.
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LHC availability 2017: Proton physics-setting the scence
/ Todd, B (CERN) ; Apollonio, A (CERN) ; Ponce, L (CERN) ; Walsh, D (CERN) ; Roderick, C (CERN)
This paper summarises the LHC machine availability for the standard proton
physics period in 2017. This paper first considers operational aspects, such as
beam mode ratios, beam dump causes, fill length and turnaround [...]
2019 - 12 p.
- Published in : (2019) , pp. 35-46
Fulltext: PDF;
In : 8th Evian Workshop on LHC beam operation, Evian Les Bains, France, 12 - 14 Dec 2017, pp.35-46
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2.
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Data-Driven Risk Matrices for CERN’s Accelerators
/ Cartier-Michaud, Thomas (CERN) ; Apollonio, Andrea (CERN) ; Blarasin, Gennaro (CERN) ; Todd, Benjamin (CERN) ; Uythoven, Jan (CERN)
A risk matrix is a common tool used in risk assessment, defining risk levels with respect to the severity and probability of the occurrence of an undesired event. Risk levels can then be used for different purposes, e.g. [...]
Geneva : JACoW, 2021 - 4 p.
- Published in : JACoW IPAC 2021 (2021) 2260-2263
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.2260-2263
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3.
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FGC3.2: A New Generation of Embedded Controls Computer for Power Converters at CERN
/ Page, Stephen (CERN) ; Ghabrous Larrea, Carlos (CERN) ; King, Quentin (CERN) ; Todd, Benjamin (CERN) ; Uznanski, Slawosz (CERN) ; Zielinski, Dariusz (CERN)
Modern power converters (power supplies) at CERN are controlled by devices known as Function Generator/Controllers (FGCs), which are embedded computer systems providing function generation, current and field regulation, and state control. FGCs were originally conceived for the LHC in the early 2000s, though later generations are now increasingly being deployed in the accelerators in the LHC Injector Chain (Linac4, Booster, Proton Synchrotron and SPS) to replace obsolete equipment. [...]
2020 - 5 p.
- Published in : 10.18429/JACoW-ICALEPCS2019-MOPHA106
Fulltext: PDF;
In : 17th Biennial International Conference on Accelerator and Large Experimental Physics Control Systems (ICALEPCS), New York, United States, 5 - 11 Oct 2019, pp.MOPHA106
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4.
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Adaptation of CERN Power Converter Controls for Integration into Other Laboratories using EPICS and TANGO
/ Page, Stephen (CERN) ; Afonso, Joao (CERN) ; Ghabrous Larrea, Carlos (CERN) ; Herttuainen, Joni (CERN) ; King, Quentin (CERN) ; Todd, Benjamin (CERN)
Modern power converters (power supplies) at CERN use proprietary controls hardware, which is integrated into the wider control system by software device servers developed specifically for the CERN environment, built using CERN libraries and communication protocols. There is a growing need to allow other HEP laboratories to make use of power converters that were originally developed for CERN and, consequently, a desire to allow for their efficient integration into control systems used at those laboratories, which are generally based upon either of the EPICS and Tango frameworks. [...]
2020 - 6 p.
- Published in : 10.18429/JACoW-ICALEPCS2019-MOPHA105
Fulltext: PDF;
In : 17th Biennial International Conference on Accelerator and Large Experimental Physics Control Systems (ICALEPCS), New York, United States, 5 - 11 Oct 2019, pp.462
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5.
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6.
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Chapter 6B: Warm powering of the superconducting circuits
/ Martino, M (CERN) ; Burnet, J-P (CERN) ; Cerqueira Bastos, M (CERN) ; Herrero Gonzales, V R (CERN) ; Kuczerowski, N (CERN) ; Pittet, S (CERN) ; Thiesen, H (CERN) ; Thurel, Y (CERN) ; Todd, B (CERN) ; Yammine, S (CERN)
The warm powering of the HL-LHC involves the new circuits of the Inner Triplets and the Separation/Recombination magnets in Point 1 and Point 5, the powering of the 11 T magnets in Point 7, and the final R2E consolidation phase in LS3. The LHC was built with modular power converters to facilitate maintenance and integrate the redundancy principle. [...]
2020 - 14 p.
- Published in : 10.23731/CYRM-2020-0010.139
Fulltext: PDF;
In : High-Luminosity Large Hadron Collider (HL-LHC): Technical design report, pp.139-152
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7.
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Systems overview: Power Converter and their Controls
/ Uznanski, S (CERN) ; Antoine, A (CERN) ; Garcia Alia, R (CERN) ; Montabonnet, V (CERN) ; Romera, I (CERN) ; Thurel, Y (CERN) ; Todd, B (CERN)
In this paper, performance of power converters for the Run 2 of the Large Hadron
Collider (LHC) is evaluated. This contribution focuses on the availability of
different families of power converters, their evolution, analyses known failure
modes and discusses mitigation of failures in the future. [...]
Geneva, Switzerland : , 2019 - 3 p.
- Published in : , pp. 139-141
Fulltext: PDF;
In : 9th LHC Operations Evian Workshop, Evian Les Bains, France, 30 Jan - 1 Feb 2019, pp.139-141
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8.
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LHC and Injector Availability: Run 2
/ Todd, B (CERN) ; Apollonio, A (CERN) ; Niemi, A (CERN) ; Ponce, L (CERN) ; Roderick, C (CERN) ; Walsh, D (CERN)
This paper summarises machine availability of the LHC and injector complex, starting with an evaluation of the machine performance in 2018, working backwards to then appraise the whole of Run 2. The first section of this paper considers LHC; identifying operational aspects, beam mode ratios, beam dump causes, fill length, turnaround , a detailed breakdown of all faults and impacts, with notable faults and new root causes identified. [...]
2019 - 16 p.
- Published in : , pp. 35-50
Fulltext: PDF;
In : 9th LHC Operations Evian Workshop, Evian Les Bains, France, 30 Jan - 1 Feb 2019, pp.35-50
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