Workshop on Accelerator Operations August 6-10, 2012 Glen D. Johns Accelerator Operations Manager

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HWDB: Operations at the Spallation Neutron Source Workshop on Accelerator Operations August 6-10, 2012 Glen D. Johns Accelerator Operations Manager

Outline Facility overview Organization Shift schedule Operating schedule Availability 2 Managed by UT-Battelle

Where is SNS? Eastern Tennessee as part of Oak Ridge National Lab 3 Managed by UT-Battelle

What is SNS? World s highest power pulsed spallation neutron source Consists of a 1 GeV superconducting linear accelerator, accumulator ring, and a flowing liquid mercury target Operates as a National User Facility for conducting neutron scattering research 13 instruments in User Program 6 in commissioning or under construction Funded by the Department of Energy s Office of Basic Energy Sciences (~$181M/year) 4 Managed by UT-Battelle

Main office building -CCR Support buildings -CHL -RFTF -CUB Klystron gallery Linac tunnel Ring Instrument hall / Target building 5 Managed by UT-Battelle

SNS Accelerator Complex Front-End: Produce a 1- msec long, chopped, H- beam LINAC: Accelerates the beam to 1 GeV Accumulator Ring: Compress 1 msec long pulse to 700 nsec H- stripped to protons 2.5 MeV 87 MeV 186 MeV 387 MeV 1000 MeV Ion Source RFQ DTL CCL SRF, =0.61 SRF, =0.81 Deliver beam to Target 402.5 MHz 805 MHz Recent 1 MW operating parameters 925 MeV beam energy 1.14E14 protons per pulse 60 Hz pulse rep rate 1.1 ma average current to target 6 Managed by UT-Battelle

SNS Accelerator Complex Front-End: Produce a 1- msec long, chopped, H- beam LINAC: Accelerates the beam to 1 GeV Accumulator Ring: Compress 1 msec long pulse to 700 nsec H- stripped to protons 2.5 MeV 87 MeV 186 MeV 387 MeV 1000 MeV Ion Source RFQ DTL CCL SRF, =0.61 SRF, =0.81 Deliver beam to Target 402.5 MHz 805 MHz Recent 1 MW operating parameters 925 MeV beam energy 1.14E14 protons per pulse 60 Hz pulse rep rate 1.1 ma average current to target 7 Managed by UT-Battelle

SNS Accelerator Complex Front-End: Produce a 1- msec long, chopped, H- beam LINAC: Accelerates the beam to 1 GeV Accumulator Ring: Compress 1 msec long pulse to 700 nsec H- stripped to protons 2.5 MeV 87 MeV 186 MeV 387 MeV 1000 MeV Ion Source RFQ DTL CCL SRF, =0.61 SRF, =0.81 Deliver beam to Target 402.5 MHz 805 MHz Recent 1 MW operating parameters 925 MeV beam energy 1.14E14 protons per pulse 60 Hz pulse rep rate 1.1 ma average current to target 8 Managed by UT-Battelle

SNS Accelerator Complex Front-End: Produce a 1- msec long, chopped, H- beam LINAC: Accelerates the beam to 1 GeV Accumulator Ring: Compress 1 msec long pulse to 700 nsec H- stripped to protons 2.5 MeV 87 MeV 186 MeV 387 MeV 1000 MeV Ion Source RFQ DTL CCL SRF, =0.61 SRF, =0.81 Deliver beam to Target 402.5 MHz 805 MHz Recent 1 MW operating parameters 925 MeV beam energy 1.14E14 protons per pulse 60 Hz pulse rep rate 1.1 ma average current to target 9 Managed by UT-Battelle

SNS Accelerator Complex Front-End: Produce a 1- msec long, chopped, H- beam LINAC: Accelerates the beam to 1 GeV Accumulator Ring: Compress 1 msec long pulse to 700 nsec H- stripped to protons 2.5 MeV 87 MeV 186 MeV 387 MeV 1000 MeV Ion Source RFQ DTL CCL SRF, =0.61 SRF, =0.81 Deliver beam to Target 402.5 MHz 805 MHz Recent 1 MW operating parameters 925 MeV beam energy 1.14E14 protons per pulse 60 Hz pulse rep rate 1.1 ma average current to target 10 Managed by UT-Battelle

Research Accelerator Division (~370) Facility Operations (70) Data Operations (72) Instrument Operations (46) Accelerator and Target Operations (157) Facility Maintenance Control Systems Instrument Support Electrical and RF Site Services Instrument Data Acquisition and Controls Scientific Support Superconducting Linac Systems Radiological Control Information Technology Sample Environment Accelerator Physics, Beam Instrumentation, Ion Source Mechanical Systems and Operations Accelerator Operations 11 Managed by UT-Battelle

Accelerator Operations Group (18) Operations Manager Machine Specialist Operations Coordinator Maintenance & Operability Coordinator Control Room Shift Supervisor (10) Control Room Accelerator Specialist (4) 12 Managed by UT-Battelle

Shift Schedules 13 Managed by UT-Battelle

FY12 Operating Schedule 14 Managed by UT-Battelle

How are we doing? 5500 100 5000 4500 Hrs. delivered MWh delivered to target Downtime 85.6% 92.1% 93.6% 95 4000 Availability 80.7% 90 3500 85 3000 72.0% 80 2500 2000 65.7% 75 1500 70 1000 65 500 0 15 Managed by UT-Battelle FY07 FY08 FY09 FY10 FY11 FY12 Presentation_name 60