Prepared by S. Calatroni, V. Baglin and J.M. Jimenez ASEVA discussions, 18/11/2008
Projects and R&D activities
J.M. Jimenez
Vacuum, Surface and Coatings group*
Mandate
• Design, construction, operation, maintenance and upgrade of high & ultra-high vacuum systems for Accelerators and Detectors.
– Expertise and support on thin-walled vacuum chambers, windows and bellows compensation systems
– Expertise in vacuum sealing and leak-tightness technology
– Management of the industrial support contract for vacuum work in accelerators
• Coatings, surfaces treatments, surface and chemical analysis for Accelerators & Detectors. Expertise and support in the fields of:
– Coatings, electroplating and surface cleaning techniques – UHV characterization and of material and surfaces
Prepared by S. Calatroni, V. Baglin and J.M. Jimenez ASEVA discussions, 18/11/2008
Vacuum, Surface and Coatings group*
Structure
R&D related to CERN Projects (1)
• Operation of existing acceleratorso LHC Vacuum pilot sectors
o Pumping of and leak localization in big volumes containing large quantities of water and/or helium
o Interventions on arcs with a limited warming up
o Upgrade of bake out regulation controller & study of new heating and insulation approaches
o Operation with collimators
• Engineering studies
o Analysis and design of beam windows o Aluminum bellows for experiments o Composite beam vacuum chambers o Characterization of corrosion
Prepared by S. Calatroni, V. Baglin and J.M. Jimenez ASEVA discussions, 18/11/2008
R&D related to CERN Projects (2)
• Monitoring & Controls
o Control system development & upgrade of monitoring, e.g. alarms, interlocks, remote operation of diagnostics, etc
o New users interfaces for RGA & helium leak detectors o Controls for Electron Cloud & Vacuum Pilot Sectors • Dynamic vacuum & studies on related phenomenon
o Stimulated desorption (electrons, photons, low and high energy ions) o Electron cloud (PS,SPS, LHC)
o Secondary electron yield measurements (RT, ceramics, cold surfaces), coatings and clearing electrodes
o Gas density simulations • Laboratory activities
o Vacuum laboratory for everyday work (leak detection, pumping devices, outgassing of metals and plastics, ESD, vacuum gauges, thermal
desorption spectroscopy, permeation …)
o Outgassing measurements (high outgassing, UHV-type and big samples) o Calibration stands for all gauges and RGAs
o Preservation of bakeout (water vapour, CLIC application) o Leak detection : ultrasonic, H2, Ne22
o Sparking studies for CLIC accelerating structures (optical, electrical, vacuum)
R&D related to CERN Projects (3)
• Cleaning methodso Follow up of solvent and detergent o Replacement of perchloroethylene
o Dry means (plasma O2, H2, radicals …) o Coatings facilities
o Carbon coatings and Low temperature NEG o XPS upgrade (quality control of coating)
o Follow up of available devices to be use for surface analysis • Chemistry
o Raman spectroscopy (vibrational spectroscopy to complete the analysis panel, characterize carbon coatings, cleaning efficiency and
characterization of pollution) • Resins and polymers
o Cianate ester based resins (large temperature working range, radiation resistant)
Prepared by S. Calatroni, V. Baglin and J.M. Jimenez ASEVA discussions, 18/11/2008
LHC Upgrade project
• Approved
• Triplet upgrade (Q1-D2): vacuum issues, cold bore insulation, radiation hard polymers
• Consolidation and upgrade of detectors (Q1-Q1): new experimental chambers, vacuum profile simulations, ageing of fluids under
radiation
• Control system development & upgrade of monitoring (alarms, interlocks, remote operation of diagnostics)
• Support to AB for new LSS equipment
New injectors
• LINAC4 vacuum systems, control, layout and related studies, surface treatments and plating
– Approved, being procured and installed
• SPL studies for layout, vacuum systems, cryostat insulation vacuum, cavity surface treatments
– Design study by end 2011
• PS2 vacuum systems and layout
Prepared by S. Calatroni, V. Baglin and J.M. Jimenez ASEVA discussions, 18/11/2008
SPS Upgrade
• Design study by end 2011
• Study of low SEY coatings for e-cloud reduction: coatings, lab characterization, SPS liner testing.
• Prototype dipole coating
• Study of clearing electrodes (classical and enamel) • Studies for scaling-up to full machine
CLIC and CTF3
• CLIC
– Design study by end 2011
– Material testing: resistance to high voltage breakdown
(experiments and simulations), thermal fatigue testing with laser
– Surface treatments for accelerating structures
– Vacuum design, study of water outgassing in small pipes, outgassing of breakdowns, numerical modelling for CLIC modules, novel vacuum chamber designs
Prepared by S. Calatroni, V. Baglin and J.M. Jimenez ASEVA discussions, 18/11/2008
HIE-ISOLDE
• Project approved
• Development of cavity fabrication method, surface treatments, niobium coating
• Cryostat design (common vs. separate vacuum) • General vacuum systems and layout
Other projects
• Technology Transfer
– Working well with various European companies and Labs
• CAST (vacuum and He environments)
– Being operated
• MedAUSTRON
– Project approved (Austrian funding)
• LHeC
– Feasibility study
• N-TOF (corrosion studies)
