Small Emittance Light Source Workshop

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Small Emittance Light Source Workshop

• MAX-LabLund, 10-12 March 2004
• Carlo J. Bocchetta
• ELETTRA

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Facility Planning
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FacilityObjectives Considerations

• Maximum Brilliance (duration stability)
• Photon - Energy range, time structure
• Machine size - circumference, ID/Circ
• Lifetime - full energy injection, top-up
• Hours of operation
• Facility lifetime - upgradeability, flexibility

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Provocative Questions

• What are the Objectives???
• a photon factory or research infra-structure?
• is the accelerator a machine or a research
  platform?
• What are the difficult machine objectives?
• How good are we really?
• How large is the work force pool?
• Can industry do the difficult work?
• How many industries can do the work - are there
  monopolies?
• How many machines are being built?

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SL - Worldwide Facilities

• Worldwide Synchrotron Light (SL) 56 20
  cons/design
• FELs 23 gt18 cons/design
• EU SL 17 3 construction 2 design, FELs 8
  9 design

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Industry

• In principle can do everything - costs
• How much of the detail design work can be
  out-sourced
• What are the acceptable risks
• What are their response/support times
• What level of procurement and support level is
  needed
• What level of interaction

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Institutional Collaborations

• Take advantage of established expertise
• Can perform as industrial source
• Obligation to deliver the goods to
  specification
• Support platform extensive
• Clear mutual benefits

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Boundary Conditions

• Money
• affects the immediate requirements
• determines future upgrade paths
• Space
• affects the max E, ID/Circ, exp hall, ...
• Time
• longer time relaxes money personnel
• Existing infra-structures
• Personnel
• Market availability
• Out-sourcing

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Organisation

• Tasks
• Design, Construction, Commissioning, Operation
• Machine
• Small core team
• Pros few people required (but expert)
• Cons extensive out-sourcing, problems with
  operations and support?
• collaborations necessary (perhaps is an
  advantage!)
• Large core team
• Pro in-house expertise, major support to
  out-sourcing, operations covered
• Cons costs, difficult to find people

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Light Source

• Basic Specifications
• energy, circumference, brilliance
• hn, wigglers, undulators, bending magnets
• required lifetime
• required stability
• full energy injection or ramping
• Upgrades
• max energy (magnets, vacuum, RF)
• feedbacks, 3rd harmonic, more RF, full energy
  injection, top-up, ...

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Engineering Constraints

• Stability requirements
• terrain, machine slabs, piles, ...
• stability of services water, power, air,..
• Shielding
• Booster placement, beam lifetime (losses)
• Space
• ancillary housing, support laboratories,
  accessibility to tunnel, placement of equipment

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Realising the Facility

• Build up of support labs (IDs, magnets, Vacuum,
  Design,...) depends on the level of out-sourcing.
• What are the common service requirements of
  machine and Users (controls, vacuum,
  engineering,...). Dynamic transition from design
  to operation.
• Evolutionary operational nature of facility must
  be taken into account.
• A successful machine is never static, but
  constantly evolving - organisation
  infrastructure needs to reflect this.