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Linac-4 current situation and outlook

Linac-4 current situation and outlook. U. Raich, F. Roncarolo, F. Zocca. Current situation. Transformers : First equipment to be operational. Very stable. Watchdog still to be included in beam interlock system

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Linac-4 current situation and outlook

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  1. Linac-4 current situation and outlook U. Raich, F. Roncarolo, F. Zocca

  2. Current situation • Transformers: First equipment to be operational. Very stable. Watchdog still to be included in beam interlock system • SEMGrids: Many tests were needed to determine the correct polarization voltages for frame and wires. We sometimes see the FESA class with software trigger instead of external trigger • Wire Scanners: Initial problems with motor movement. Now stable • Emittance Meter: Several problems with motor movement. At the moment stable and operational. Measured emittance is too small as compared with simulations. • BSM: Had some problems with external RF reference and wire movement. Looks ok now. However only few measurements after installation in the tunnel since buncher became available only recently • BPMs: Need still some work. First position measurement were done. Phase measurements still to be tested. At the moment we only have 2 BPMs • Halo monitor: Not installed at the moment. BI Technical Board

  3. A few screen shots from the logbook BI Technical Board

  4. RecentMeasurementsfrom BSMs BI Technical Board

  5. Profile andEmittanceMeasurementswith Laser BI Technical Board

  6. Laser First Laser testswith Diamond detectormeasuringtheneutrals BI Technical Board

  7. Angle profilefor 1 laserposition BI Technical Board

  8. Laser Outlook • Nobudget was foreseenforlaserstripping • Need tobuy Laser + diamondstripdetector • Will allowtomeasureemittanceparasitically on the operational beam at 160 MeV BI Technical Board

  9. Tobefinished at 3 MeV • Adjustmentofbunchers • This iscurrentlydoneusingthespectrometerandthe BSM • The BSM softwaretobeintegratedintocontrol system BI Technical Board

  10. Planning BI Technical Board

  11. Next step • Installation of the first DTL tank. • Move the measurement line after the DTL tank • Re-cable and re-commission all devices (except spectrometer) • Repeat measurements at 12 MeV • No new devices! BI Technical Board

  12. New measurement line at 50/100 MeV • 3 BPMs will be recuperated from the 3 MeV line • 1 Transformer recuperated from the 3 MeV line • The wire scanners & grid tanks for the intertank regionsare fabricated • 3 new tanks with hor/verSEMGrid + wire scannerThese tanks were expected to be ready by June but will be delayed until September • BSM recuperated from 3 MeV line Cables for SEMGrids and WS will be pulled back (use CCDTL cables) BPM and transformer cables are available BSM prolongation cable is available BI Technical Board

  13. Still missing from the list • BPMs for inter-tanks (DTL ones ready, all will be ready by July) • Transformers after DTL CCDTL and PIMS (ready) • Wire Grids and wire scanners for inter-tanks(last information I have says ok but must check again) • BLMs All should be ready by the end 2014 BI Technical Board

  14. BPMs forthe inter-tank BI Technical Board

  15. Summary • Transformers, wirescanners, wiregridsand BSM havebeencommissioned • Nobigproblemsareexpectedforthedevicestobeinstalled. • BPMs needfurtherworkat theelectronicslevel • Tanks forGridsand WS at 100 MeVarelateDates for the inter-tank grids and WS to be verified • BSM needssoftwareintegration (not too urgent) BI Technical Board

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