ACCSYS Collaboration Board Triestre, 3rd october 2017 Anne-Isabelle ETIENVRE

Elliptical Cryomodules Medium b Demonstrator (M-ECCTD) tests results High Beta cavity vertical tests result Almost ready for production … 2. RFQ Status 3. Beam Instrumentation 1. NPM 2. nBLMs

ESS ELLIPTICAL CRYOMODULES IMAGE CEA – IRFU 2018 CEA Saclay/Irfu projet ESS | DATE

ESS ELLIPTICAL CRYOMODULES M-ECCDT : medium beta demonstrator IMAGE CEA – IRFU 2018 CEA Saclay/Irfu projet ESS | DATE

M-ECCTD : top view of saclay test stand ACCSYS Collaboration Board Triestre, October 2018

1st HIGH RF POWER TESTS at 1 MW and 2K 14Hz ; Nominal Field (> 16,7 MV/m) ; RF peak power : 1,1MW ; RF pulse length 3,6ms With Lorentz forces compensations (Piezo) Without Lorentz forces compensations (Piezo) MV/m MV/m Zoom Happy CEA team ! MV/m ACCSYS Collaboration Board Triestre, October 2018

ESS ELLIPTICAL CRYOMODULES H-ECCDT : high-beta demonstrator IMAGE CEA – IRFU 2018 CEA Saclay/Irfu projet ESS | DATE

H-ECCTD : 1st high betaq bare cavity vertical cryostat measurements High b Cavity tuning ACCSYS Collaboration Board Triestre, October 2018

ESS ELLIPTICAL CRYOMODULES COMPONENTS PRODUCTION LAUNCHED IMAGE CEA – IRFU 2018 CEA Saclay/Irfu projet ESS | DATE

CRYOMODULES COUPLERS : on track pre-serie components conditioned 1.2 MW 10 prototype couplers already conditioned with success + 6 pre series CM couplers (medium b) delivered at Saclay 5 fully conditionned 1 partially conditionned ACCSYS Collaboration Board Triestre, October 2018

Cryomodules : Delivery of pre-serie components ACCSYS Collaboration Board Triestre, October 2018

RFQ CEA Saclay/Irfu projet ESS | DATE

RFQ CAVITIES / Section 1 assembly trial ACCSYS Collaboration Board Triestre, October 2018

RFQ – SKID INStalled in june 2018 (Lund) ACCSYS Collaboration Board Triestre, October 2018

RFQ couplers conditioned at nominal performances + margins with ICS contribution Control System for couplers conditioning Test cavity with both couplers ready for conditioning Power Vacuum Temperatures 48 hours long conditioning (1 MW – 3.6 ms – 14 Hz) ACCSYS Collaboration Board Triestre, October 2018

NON INVASIVE PROFILE MONITORS BEAM INSTRUMENTATION NON INVASIVE PROFILE MONITORS & BEAM LOSS MONITORS CEA Saclay/Irfu projet ESS | DATE

Beam instrumentation : profile monitor Measures on IPHI facility before CDR planned in december IPHI platform IPM CCD camera & control system IPM with strips read-out ACCSYS Collaboration Board Triestre, October 2018

nBLMs : differents tests before CDR planned in december BEAM INSTRUMENTATION nBLMs : differents tests before CDR planned in december Beam tests at different irradiation facilities in 2018 IPHI CEA/Saclay 3 MeV p on Be target and Al endcap AMANDE, IRSN,Cadarache Monoenergetic n or γ+n yields MC40, Birmingham, UK 28 MeV p on Al target Linearity with beam current 28 MeV proton beam on an aluminum target Time Response Fast module: Immediate response, count rate has a direct correlation with beam current intensity. Slow module : most of events recorded within 100-200μs, but higher efficiency. Still ~5% of events will be register within 5μs Gamma to neutron suppression γ sensitivity with resect to neutrons 10-3-10-4, depending on threshold Higher threshold  stronger suppression but with efficiency loss Complete suppression possible. Operation point to be chosen according to actual conditions ACCSYS Collaboration Board Triestre, October 2018

ORPHEE nuclear reactor nBLMs efficiency measurements Detector Efficiency ORPHEE nuclear reactor LLB, CEA Saclay 0.01 eV neutrons, flux 2×106 s-1 cm-2 Analysis ongoing Stable operation with high current (up to 600 nA), no discharges Verified that 5 mm Borflex absorbs completely the thermal neutrons study the detector operation parameters (B4C thickness, drift gap, operating voltages) to optimize signals (duration, amplitude etc.) Planning CEA Saclay SPR: 110 GBq AmBe, Co, Cs sources CEA Saclay: cryo-module testing CERN Linac4: Installed a detector in the hall (without interfering!) in Aug 2018. Profit from on-going run to test response, backgrounds, BEE (November) in most similar(?) conditions available to the ESS linac Other tests Fast detector Slow detector Dependence with neutron energy Mylar vs Polypropylene Dependence with neutron energy Double efficiency when 1 mm polypropylene is used instead of 100 μm Mylar. However, we choose the Mylar due to the stability of the metallization, sacrificing a factor 2 in count rate. Dependence with polyethylene Dependence with EDEP threshold For the slow detector the area of the moderator is used for the calculation (25×25 cm2) While for the fast the active zone (8×8 cm2) ! Moderator thickness chosen for final detector: 5 cm ACCSYS Collaboration Board Triestre, October 2018

Conclusion CEA Saclay/Irfu projet ESS | DATE

1. RFQ : machining of cavities seems to be under control Conclusion 1. RFQ : machining of cavities seems to be under control 2. Elliptical Cryomodules : production phase is launched and assembly will start in january with industrial team. 3. Beam Instrumentation / Diagnostics : several mesures are going on to demonstrate performances before CDR milestones.

Thank you for your attention CEA Saclay/Irfu projet ESS | DATE