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ESS Pre-Operations. Dave McGinnis Accelerator Division/RF Group. Pre-Operations ( my definition ). Starts when we try to accelerate one proton down the beam tube Until we achieve 5 million Watts (5 MegaWatts ) 900 trillion protons per pulse 14 times a second

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ess pre operations

ESS Pre-Operations

Dave McGinnis

Accelerator Division/RF Group

pre operations my definition
Pre-Operations (my definition)
  • Starts when we try to accelerate one proton down the beam tube
  • Until we achieve 5 million Watts (5 MegaWatts)
    • 900 trillion protons per pulse
    • 14 times a second
    • Beam voltage of 2.5 billion volts
what is 5 megawatts
What is 5 MegaWatts?
  • At 5 MegaWatts,
    • one beam pulse
      • has the same energy as a 16 lb (7.2kg) shot traveling at
        • 1100 km/hour
        • Mach 0.93
      • Has the same energy as a 1000kg car traveling at 96 km/hour
      • Happens 14 x per second
    • You boil 1000 kg of ice in 83 seconds
      • A ton of tea!!!
pre pre operations
Pre-Pre-Operations
  • Will start during construction.
  • As soon as a small section of the accelerator is ready (Ion Source->RFQ->Drift Tube)
    • We will run beam to check out major systems (controls, RF, instrumentation, operations staff…)
  • Beam is the Ultimate System Integrator!
  • Commissioning will happen from 8pm – 8am
    • Construction and repair will happened during the day
accelerator readiness
Accelerator Readiness
  • Because of the immense damage the beam can cause we will have to prepare procedures to makes sure all systems are ready – A BIG DEAL
  • For example, formal sign-offs of all the systems:
    • Safety (shielding, interlocks, electrical,…)
    • Electrical
    • Vacuum
    • Instrumentation
    • RF
    • Cryogenics
pre operations
Pre-Operations
  • Once the machine is cold, and the accelerator is ready, we will begin round-the-clock operations
    • It is too expensive to not run round-the-clock
    • We have to maintain configuration control
  • We will need to make a detailed commissioning plan
    • Detailed shift plan for 3 shifts per day for 3 months.
      • People, tasks, tools
    • Plan will be invalid after the first shift
      • “Plans are worthless, but planning is everything.” Dwight Eisenhower
staff
Staff
  • We will need two types of crews
    • Operations crew (permanent)
      • 3 operators/crew
      • 5 crews
    • Scientist/ Engineer crew (temporary)
      • 2 staff members/crew
      • 6-7 crews
  • We will need coordination
    • Machine coordinator (scientist)
    • Machine scheduler (operations)
  • Meetings
    • Shift change meetings
    • Daily operations meetings
super rough schedule
Super Rough Schedule
  • ~1 month to thread the beam
  • 1-6 months for 100kW beam
  • 6-24 months for > 2 MW beam
  • What are we doing between 2020-2025???
slide9
“If it works the first time, then its over-designed”

Archimedes to his junior engineer, Wally, ~220 B.C

upgrades
Upgrades
  • A “gold-plated” accelerator is un-affordable.
  • We have to plan to upgrade (fix) systems that did not perform as expected
    • Every large accelerator system built has taught us this
      • LHC
      • Tevatron
      • SNS
  • Funding will be needed during the pre-operations phase for upgrades.
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