WP13 outsourcing: Hollow Electron Lens A. Rossi – presentation to the WP13 meeting on 27th May 2019

D. Perini, 8th HL-LHC Collaboration Meeting, CERN, 15-18 October 2018

Scandia-doped cathode Electron beam generated by hollow cathode Thermionic cathode electron emission T - activated cathode anode control electrode FNAL e-gun design with scaled electrode dimensions Courtesy of G. Stancari G. Gobbi, 8th HL-LHC Collaboration Meeting, CERN, 15-18 October 2018

Gun: (1 prototype built/tested at CERN)   Gun: (1 prototype built/tested at CERN) Production 4-6 months from beginning-mid 2021 Tests at BINP Tests at CERN test stand if deemed necessary BE-BI BINP Vacuum chambers and mechanical structure Production 6-8 months Vacuum tests at BINP Blackening at CERN TE-VSC Collector: (1 prototype built/tested at CERN) Production 6 months from mid-end 2021 Test at BINP BE-BI BINP Beam diagnostics BLM BPM (1 prototype built/tested at CERN) BGC 1 prototype to be tested at CERN 1 interaction chamber at BINP or CERN for tests BE-BI & ??? BE-BI + Russia BE-BI + BINP BE-BI + Uk Modulator: since PC are at CERN I would make it here Design can start in 2020, 1 – 2 y Production Tests at CERN test stand (with prototype gun and collector) BE-ABT Power Converters (for magnets and HV system) at CERN 2y from end of LS2 TE-EPC Magnetic system (winding, cryostat and support/feet): Production 1.5 – 2 y starting from end 2021 – beg. 2022 Tests at CERN (SM18 or BINP ?) TE-MCS Magnetic measurements at CERN TE-MCS + BINP@CERN Quench protection / energy extraction TE-MPE Final assembly at CERN CERN (TE-VSC, BE-BI, EN-SMM, ?) + BINP@CERN Interlock (HV system and interlock tested at E-Lens Test stand) TE- EPC/MCS Installation and commissioning in the tunnel CERN: EN-HE BE-BI:EA,ML,BL,BP + FSU EN-SMM TE-CRG TE-MCS ? BINP team @ CERN