Hardware Commissioning following the extended TS B Mikulec

Hardware Commissioning following the extended TS B. Mikulec Linac 4 towards operation 26/06/2018 1

Introduction • • Up to now HW commissioning of Linac 4 has been performed by the ABP team In view of the future operational mode of Linac 4, OP should gain experience with the HW commissioning • • Collect all information from the ABP team and the equipment experts Formalise the HW commissioning period through online checklist (Online) planning important to respect deadlines and to plan dry runs with equipment experts Special attention to modifications implemented during TS Linac 4 towards operation 26/06/2018 2

Main Changes during TS • RF: Numerous modifications… [see presentation R. Wegner] • • Klystron exchange for CCDTL 5 -6, exchange of RF pickups, RF interlock chassis changes, modifications to DTL power couplers, displacement of arc detector logic boxes to surface, new tuner cards for PIMS etc. LL-RF upgrades and controls changes Beam instrumentation: Semgrid installation, inspections BSM, BMLEM Stripping foil test stand: Stripping foil exchange Minor source modifications Cabling … Linac 4 towards operation 26/06/2018 3

Online Checklist • • Will be used for the first time for Linac 4; already gathered good experience with checklists for the other machines Accessible from OP webtools and provided by E. Matli (https: //op-webtools. web. cern. ch/index. html) Had to be constructed from scratch for Linac 4 Main advantages: • • Assembly of all planned tests continuous update over time and basis for next years Procedures can be linked to each test Possibility to add comments or pictures to tests Add tags, e. g. when a test requires the presence of experts History of tests Statistics page to show advancement of commissioning Link to ASM planning tool Linac 4 towards operation 26/06/2018 4

Linac 4 Online Checklist • Pre-requisites and HW commissioning checklist done (59 + 314 tests defined); final validation still to be done Example: Pre-requisites Parameters and Databases Optics Linac 4 towards operation 26/06/2018 5

Linac 4 HW Commissioning Checklist Test procedures have been added where deemed useful. Linac 4 towards operation 26/06/2018 6

Example Checklist Statistics PSB HW Tests Linac 4 towards operation 26/06/2018 7

Additional Remarks for HW Commissioning DSO tests • • • Source HW commissioning left to source specialists, but OP will participate to learn… sequence of tests for checklist (provided by J. Lettry) to be refined at this occasion RF: HW commissioning period will be used by RF experts for individual system tests; very tight schedule BIS: Special test proposal • • • Verify interlock integrity for each pre-chopper failure mode (changes) Verify interlock integrity for each chopper failure mode Re-qualify RF connections to BIS (‘RFQ’ and ‘Linac 4 RF’) after HW changes Linac 4 towards operation 26/06/2018 8

HW Commissioning Planning • • Plan is to use the ASM tool for the HW and beam commissioning planning Example PSB beam commissioning: Link to checklist test! Linac 4 towards operation 26/06/2018 9

Summary • HW commissioning checklist ready; ABP and equipment experts should verify it and send me their comments • • Source HW commissioning checklist being refined with experts No details (yet) in checklist for RF HW commissioning Special tests planned of BIS user_input signals for pre-chopper, chopper and RF after changes during TS 2 weeks should be sufficient for all tests; RF HW commissioning seems quite tight Source and RF HW commissioning left to specialists Insertion of tests into ASM planning tool next step – new LN 4 schedules for HW and beam commissioning planning have been requested and created Beam commissioning planning to be followed Linac 4 towards operation 26/06/2018 10