Ess pre operations
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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

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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???


Ess pre operations

“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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