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ESS Pre-Operations

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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  1. ESS Pre-Operations Dave McGinnis Accelerator Division/RF Group

  2. 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

  3. 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!!!

  4. 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

  5. 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

  6. 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

  7. 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

  8. 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???

  9. “If it works the first time, then its over-designed” Archimedes to his junior engineer, Wally, ~220 B.C

  10. 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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