The WIC interlock system General layout of a

The WIC interlock system General layout of a WIC system A generic solution Hardware WIC installation Win. CC supervision Systems deployed in CERN accelerator complex Future installations 1

WIC (Warm magnet Interlock Controller) layout Standardized interlock system for normal conducting magnets based on SIEMENS PLCs (Programmable Logic Controllers): – – Collects inputs from thermo-switches, flow switches, internal PC faults Provides Permits to the power converter and beam interlock system 2

WIC installation – generic solution The Warm magnet Interlock Controller (WIC) is a PLC based system. Siemens Safety Series used - offers self checking safety environment Exceptions: In LHC-SPS transfer lines, non-safety modules are used because of radiation issues. Generic SW used for all installations Programming of the PLC in collaboration with BE-ICS EN/ICE-PLC Programming of the Win. CC supervision in collaboration with BE-ICS EN/ICE-SCD Generic HW (to some extent) used for all installations The WIC is designed for machine protection and is not certified for human safety 3

WIC installation – Interlock boxes Thermo- switch ELMWOOD Type 3106 – T 117 Magnet Interlock Box with (single) sensor connectivity and remote test relay (also double, 4 and 6 sensors version) 4

Magnet <-> WIC interface Interlock boxes are placed on or close to each magnet to collect all input signals For maintenance purpose, a remote test feature is implemented (by means of a relay) in order to simulate the opening of any input signal This operation can be done remotely and allow us to check periodically the installation during shutdowns or upon request. 5

WIC installation – Patch panels Patch one channel boxes 24 inputs and 24 outputs Patch power converters 24 statuses and 24 outputs 6

WIC installation – In electrical rack All signals from / to magnets or power converters are collected on dedicated patch panel and then routed to different crate with NE 48

WIC installation – Storage area Power supply 24 V cables Power supply status Outputs to power converters To input module 24 DI To output module 32 DO Profibus + Spares crates and interlock boxes in building 272

Win. CC supervision o Remote supervision/testing of the installation o Archiving of faults Magnet widget Main faceplate PC widget 9

History buffer 10

WIC in LHC - SPS transfer lines Ethernet PLC S 7 -300 (Master) Building Magnets Interlock Ti 2 / Ti 8 & TT 41(CNGS) Ti 2 1 PLC in BA 7 BA 4 / BA 7 & BB 4 Based on S 7 -300 PLC (Siemens) with SIMATIC ET 200 M Periphery Ti 8 1 PLC in BA 4 TT 41 1 PLC in BB 4 To Power Converter control Underground Tunnel Ti 2 / Ti 8 & TT 41(CNGS) Repeater Profibus DP Fieldbus ET 200 Periphery are installed under Dipole magnet every 120 m ET 200 Periphery is based on: - Digital modules 20 Peripheries for Ti 2 tunnel controlling 300 magnets ET 200 Periphery 20 Peripheries for Ti 8 tunnel controlling 403 magnets 6 Peripheries for TT 41(CNGS) tunnel controlling 145 magnets 11

WIC system in the injector chain : the current status Linac 4 T L 4 Proton chain Linac 2 1 LT / LTB / BI 1 deployed in accordance with L 4 schedule Ion chain Booste r 4 WICs (since LS 1) Linac 3 LEIR 1 1 PS TT 2, TT 10 Magnets currently not protected by WIC solution SPS 7 (since LS 1) TT 60/Ti 2 TT 40/Ti 8 2 2 (since 2004/05) LHC 8 (2007) ~30 PLCs & ~140 I/O chassis ~ 2300 magnets are protected Full responsibility of TE/MPE, including cabling (since 2009) (since 2005) 12

Both WIC in the Experimental Facilities : the current (and simple) status 1 1 Hi. Rad. Mat (TT 66) AWAKE 1 2 (since 2010) ELEN A HIEIsolde 1 2 (in 2016) (Q 2/2015) Refurbish CNGS installation (CNGS since 2005, AWAKE in 2016) 13

Other existing (originally PO built) ‘Magnet Interlocks’ AD, CTF 3, n-TOF, East Zone… + Direct cabling (patch panels) North Zone SPS mains and auxiliaries 14

WIC Consolidation Plans WIC system will be deployed in new machines/facilities: ELENA HIE-ISOLDE (3 phases) AWAKE (2 phases) And other areas (consolidation/replacement): PS: LS 2 L 4 -> PSB transfer lines: EYETS 2016 -17 PSB -> PS transfer lines: LS 2 PSB -> ISOLDE Transfer Lines (LBTM, LBTY): ? TT 2/n. TOF/TT 10/TT 20: LS 2 East Area: LS 2 or LS 3 ? AD: LS 3 North Area, and TCC 2: LS 3 15

Conclusions Very good experience and reliable operation of PLC based interlock systems in LHC + injectors since >10 years PLC based systems offers remote diagnostic (everyone) and test possibilities (limited to system experts) Renovation and deployment will continue during next years, with priority on main proton chain Priorities in experimental zones to be coordinated between MSC/EPC and MPE 16

Thank you for your attention! WIC web site : wic. web. cern. ch 17