ESS Pre Operations Dave Mc Ginnis Accelerator DivisionRF
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ESS Pre. Operations Dave Mc. Ginnis 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 Mega. Watts) – 900 trillion protons per pulse – 14 times a second – Beam voltage of 2. 5 billion volts
What is 5 Mega. Watts? • At 5 Mega. Watts, – one beam pulse • has the same energy as a 16 lb (7. 2 kg) shot traveling at – 1100 km/hour – Mach 0. 93 • Has the same energy as a 1000 kg 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-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 8 pm – 8 am – Construction and repair will happened during the day
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 • Once the machine is cold, and the accelerator is ready, we will begin roundthe-clock operations – It is too expensive to not run round-theclock – 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 • 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 • • ~1 month to thread the beam 1 -6 months for 100 k. W beam 6 -24 months for > 2 MW beam What are we doing between 2020 -2025? ? ?
“If it works the first time, then its over-designed” Archimedes to his junior engineer, Wally, ~220 B. C
Upgrades • A “gold-plated” accelerator is unaffordable. • 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.
