1 BROOKHAVEN SCIENCE ASSOCIATES Preparations for Linac Commissioning Ray Fliller, Associate Physicist 8 th ASAC meeting for NSLS-II Project May 10-11, 2011

2 BROOKHAVEN SCIENCE ASSOCIATES Introduction Linac Commissioning is scheduled to start November 7, It is anticipated to last until the end of the year. Obtaining authorization is required prior to commissioning. The authorization process involves the NSLS-II project, the lab ESH committee, lab management and the DOE. The focus of this talk is path to authorization.

3 BROOKHAVEN SCIENCE ASSOCIATES Linac Commissioning Task Force On December 15, Ferdinand appointed the Linac Commissioning Task Force who’s task is to coordinate commissioning of the NSLS-II linac Members: Ray Fliller – Injection Systems, Task Force Lead Brett Parker – Injection Systems Joe Delong – Controls Feng Gao – RF Om Singh – Diagnostics Bob Casey – ESH Andrew Ackerman – ESH Mike Buckley – ESH Randy Church – Operations Mike Santana – Operations Timur Shaftan – Injection Systems Group Leader Jim Rose – RF Systems Group Leader Ferdinand Willeke – Accelerator Systems Division Head Meetings are held bi-weekly and as needed. Current focus has been the Authorization Basis documentation required for linac commissioning in culminating in the Accelerator Readiness Review.

4 BROOKHAVEN SCIENCE ASSOCIATES Zoom in to linac vault Equipment installation proceeds through the penetration and ends at a gate valve. This section will not see beam during commissioning End of Linac ICT LB-B2 LB-B1

5 BROOKHAVEN SCIENCE ASSOCIATES Operation Authorization Process We are here, Send to DDO this week Courtesy of Steve Hoey. May 28, 2011 May 31, 2011 October 17, 2011 November 7, 2011 April 12, 2011 ~2009

6 BROOKHAVEN SCIENCE ASSOCIATES Linac Commissioning Schedule Lab ESH committee reviews the Authorization Basis (AB) Documentation – April 12, 2011 – finished. Deputy Director of Operation approval of AB documentation – package to DDO this week BHSO receive AB Documentation for Review – May 28, 2011 ARR Team Appointment – May 31, 2011 BHSO Approval of AB documentation – July 8, 2011 Injector Building Beneficial Occupancy Date - July 28, 2011 Linac Installation Begins - August 11, 2011 Linac ARR - October 17, 2011 Linac Commissioning Begins – November 7, 2011

7 BROOKHAVEN SCIENCE ASSOCIATES Immediate Next Steps Develop the Linac Commissioning Plan and other necessary documentation Linac Commissioning Plan outlines what needs to occur to be ready for commissioning. Get necessary AB documentation approvals from DDO and BHSO. Interface with Research Instruments to develop a linac commissioning sequence A draft sequence exists. I will travel to RI in late June with this as one of my tasks. Finish High Level application requirements and specifications Prepare to the ARR

8 BROOKHAVEN SCIENCE ASSOCIATES Linac Beam Parameters

9 BROOKHAVEN SCIENCE ASSOCIATES Diagnostics Available for Commissioning Flag ICT BPM Faraday Cup Faraday Cup FCT Installed but sees no beam Safety Shutter

10 BROOKHAVEN SCIENCE ASSOCIATES Linac Parameters and Measurements necessary for commissioning Beam ParameterValueMeasurement Energy200 MeVDipole & Flag Current0.5nC/bunch in SPM and 15 nC train in LPM Wall Current Monitors in Linac, Integrating Current Transformer at Linac output, Faraday cup in both beam dumps. Fill Pattern1 bunch in SPM, bunches separated by 2 ns, 10% relative charge difference per bunch in LPM Wall Current Monitors in Linac, Fast Current Transformer at Linac output, Faraday cup in Dump on straight ahead transport line Energy Spread0.5%Dipole and 2 flags Transverse Emittance 4  x  x ’ =155nm Three Screens and Quadrupole scan in transport line

11 BROOKHAVEN SCIENCE ASSOCIATES List of High Level Applications (not exhaustive) operators panel vacuum status PS status Temperature measurement beam loading compensation Water/ Compressed air status synchronization panel/ bunch select bunch pattern monitor RF feedbacks charge/ trajectory/ beam size measurements energy/ energy spread measurement emittance measurement (3 screen + quad scan) charge/ bunch pattern measurements interlock status + shutters status rad monitors status loss measurement system Linac current monitor panel Want to have specifications for all high level applications by the end of May

12 BROOKHAVEN SCIENCE ASSOCIATES Conclusion Linac Commissioning Task Force has been assembled to coordinate commissioning tasks. Task force’s main focus to date has been on developing the AB documents with ESH. This is on schedule The path to commissioning is clear both from ESH and physics point of view.

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