LINAC3/LEIR equipment integration for new hardware and old hardware with new features - R. Scrivens, N. Biancacci, R. Alemany Acknowledgements: ...

LINAC3/LEIR equipment
integration for new hardware
 and old hardware with new
           features
             R. Scrivens, N. Biancacci, R. Alemany
Acknowledgements: Verena Kain, Edgar Mahner & Detlef Kuchler

Overview: new hardware and old hardware
with new features
                           Transfer
      Linac3
                             lines
                                                   LEIR              LEIR    LEIR

             Source        New BPM acquisition                               Monitoring and
                                                      New FGCs
      Tests/Improvements        system                                      Optimization tools

                                                  New Longitudinal            Turn-by-turn
        Source GHOST
                                                     Schottky                  trajectory

      New LLRF ramping,
                                                                                Stray field
         bunching &                              Settings management
                                                                              compensation
         debunching

         LBE/LBS line

Source Tests in 2020
• To easy tune beam at extraction and improve flexibility of beam matching between source and LEBT  movable
  extraction electrode
• To improve extracted beam intensity  Al coated plasma chamber
• Less oxidation and longer running time
     oven modifications
     O2/N2 as support gas
• No oven refills  Lead gas injection (C8H20Pb)

Based on test results of those tests, posible source modifications in 2021 could be expected
Schedule and plan will depend on resources and priorities

Source GHOST
GHOST (GTS-LHC source operation support)  BE-ABP
   ⎻Software based feedback loops, not an autopilot!!! (DK)
   ⎻Development continues in 2019/2020.
   ⎻Debugging and tests of new modules during the source/linac tests in the second half of 2020
   ⎻Full implementation of the new modules in 2021.
   ⎻The kind of modules to be developed depends on the outcome of the source parameter study in 2019 and
   the collaboration with the machine learning specialists, but the main target will be the oven control.
   ⎻The development is an ongoing process, more modules may come in the future.

Linac3: new LLRF
(From consolidation budget)
                                                                          Tank 1   Tank 2   Tank 3

                                                                                                               Debuncher
                                                               Bunching

                                                                                                     Ramping
Hardware status:
 Engineering design report and functional specs done
 Call for tenders launched
 Hardware purchase, installation + IST in 2020  BE/RF

Software status:
 FESA class properties and fields naming convention W50 2019  BE/RF,ABP,OP
 FESA class released for configuration in LSA W19 2020  BE/RF.ABP,OP
 Settings management and high level software for controls W20 2020  BE/RF,ABP,OP

Tests schedule:
 HWC W36-42 2020  BE/RF,ABP,OP
 Beam commissioning from W43 2020  BE/RF,ABP,OP

Linac3: LBE/LBS lines
Hardware status
 LBS.BVT10 converter and magnet ISTs and HWC W17-18 2020  EPC,ABP

Software status:
 Controls modifications to send ion beams to LBE/LBS lines (LN4 equipment
   to accept LN3 driven settings)
      Specification written
      Specifications being implemented  BE-CO, TE-EPC, BE-BI
      Application Software: LBE: specifications done by Linac4*; LBS:
        modification of present application for L3** by W17 2020  BE-OP

Tests schedule:
 Dry run tests in Linac4 LBE run (no ions)  BE-CO
 LTB and LBE IST & HWC are part of Linac4 IST/HWC in W17 2020  BE-OP
   (HWC)
 Beam commissioning W47-48 2020  BE-APB
  * The specification includes the possibility to measure ions by L3
  ** includes the controls modifications

Transfer line: new BPM acquisition
ELECTROSTATIC
• Almost all the BPMs suffer of charging (ETL.BPMI60 is
   practically unaffected)
• Application of electrode bias voltage and magnetic field
   reduce but not solve the problem
• Behaviour is different depending on the BPM location
• Strong dependence on quad settings, slits setting, PS cycle

                                                                                Linac3 pulse
 PULSE HIGH FREQUENCY: NEW
 The acquisition system will exploit the 101.29MHz bunching
 component, performing an analogue down-conversion to the
 10.2MHz IF frequency before the digital acquisition, to
 calculate the position by the Δ/Σ algorithm.

                                                                Nothing except the beam have 101.29 MHz component

Transfer line: new BPM acquisition
Hardware requirements:
 Update of the functional specifications done
 Production of the new acquisition electronics on going  BE/BI
 Installation and IST in 2020  BE/BI,OP,ABP

Software requirements:
 Integration in MADX done
 Integration in layout db to be finished  BE/BI,OP,ABP
 FESA class ready
 Integration in LSA done
 Integration in YASP done
 New application needs to be done to exploit all the physics information these devices can give during LS2 
   BE/OP

Tests schedule:
 HWC in 2020  BE/BI,OP,ABP
 Beam commissioning end of 2020 & 2021 BE/BI,OP,ABP

LEIR: new FGCs

                 Jan-Feb 2021

                                  IST

                 W10-11 2021

                 HWC W12-13 2021  BE/OP

LEIR: new longitudinal schottky
Hardware status:
 Upgraded system based on PCI express (100x faster data transfer (+ buffering)*) will be purchase in 2019  BE-BI
 Spare in 2020  BE-BI

Software status:
 Existing FESA class will be adapted to this new hardware  BE-BI
 Existing high level software will be updated to the FESA changes  BE-OP
 More functionality will be added to the exisiting high level software  BE-OP

Test Schedule:
 IST W7-8 2021  BE-BI
 HWC W9-11 2021  BE/OP
 Beam Commissioning W16-17 2021  BE-OP

                                                          *Data received and processed within 5-10 sec
                                                          FFT would become the bottleneck, could be parallelized

Others
Settings management:
 LEIR:
      improve generation and settings management  BE-OP,CO
      full integration of LEIR LLRF in LSA  BE-OP,RF
 LINAC3
      Full integration of new Linac3 LLRF in LSA
      Quadrupole scans  BE-OP

Turn-by-turn trajectory
 High level application written and being improved  BE-OP

LEIR monitoring and optimization tools:
 Stray field compensation
 Autopilot
 Injection optimizer
 E-cooler optimizer
 SemGrids pulse quality monitoring
 Transfer line trajectory drifts monitoring
 Energy drifts from Linac3 monitoring using Schottky