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LCLS Control Room Requirements - and expansion scenarios for the MCC Patrick Krejcik October, 2003
Maintain a single control room for all accelerator programs LCLS will double the present occupancy of MCC The control room is already at full capacity with PEP II Building and moving to a new control room too expensive Accelerator Controls and Beam Instrumentation Patrick Krejcik, LCLS
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LCLS shares the linac with the high-energy physics program
LCLS requirements LCLS shares the linac with the high-energy physics program Although beams are independent, there are common controls hardware (micros) and PPS and access issues A single control room is necessary to ensure that the EOIC can monitor the state of both programs …. If it is big enough. Accelerator Controls and Beam Instrumentation Patrick Krejcik, LCLS
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Present control room, MCC
Has a long history of evolution Is not “ideal”, even for the present program Typical occupancy at present 1 EOIC, 3-4 shift operators, program deputy, detector liaison, machine physicists for PEP II, secondary program physicists e.g. FFTB Occupancy can be as high as 15 during PEP II MD’s and there is no longer room for FFTB program. LCLS could double this occupancy! Accelerator Controls and Beam Instrumentation Patrick Krejcik, LCLS
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LCLS is divided into regions
LCLS requirements LCLS is divided into regions RF Photoinjector – includes an elaborate laser system, RF gun and 150 MeV accelerator Linac and bunch compressors – includes sectors 21-30, chicanes BC1 and BC2 BSY and Research Yard electron transport lines – LTU includes a large amount of diagnostics Undulator – the FEL contains elborate diagnostics and MPS X-ray beam lines – to the Near Hall and the Far Hall ………. Multiple undulators and beam lines in the works! Accelerator Controls and Beam Instrumentation Patrick Krejcik, LCLS
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LCLS is a pulsed machine
LCLS requirements LCLS is a pulsed machine Unlike storage rings, every shot is different Similar to SLC experience Need a large number of real-time diagnostics Real-time diagnostics (scopes, strip charts etc.) can be displayed on work station screens, don’t use control room scopes any more Real-time displays can be visually overwhelming, so we will try to design “smarter” summary displays Accelerator Controls and Beam Instrumentation Patrick Krejcik, LCLS
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Control room layout Control room area is presently defined by an oval-shaped enclosure formed by equipment racks and a windowed partition wall with two entry doors. Equipment racks originally designed to hold electronics, CRT displays, push buttons and switches and operator consoles (COWs) Functions of rack mounted equipment largely superceded by workstation displays and keyboards Available bench and table space not well matched to the large number of workstations Accelerator Controls and Beam Instrumentation Patrick Krejcik, LCLS
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Present MCC Layout
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Floor space can be expanded by (re)moving the equipment racks
Expand and reorganize Floor space can be expanded by (re)moving the equipment racks Associated activity rooms Meeting rooms, computer room, printer and supply room, kitchen and (inadequate) bathroom, offices … Evaluate impact to operations when racks are moved Some racks nearly empty Other racks have wiring cross connects Documentation? Accelerator Controls and Beam Instrumentation Patrick Krejcik, LCLS
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Scenario 1 Remove southern half of racks
These racks do not appear to contain critical items Relocate MP00 in computer room 112 Move all printers, books, radios, flash-lights into room 114 Expanded floor space for workstations
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Scenario 2 Remove northern half of racks
Could leave beam containment racks in place Rationalize racks behind the control room containing interlocks and cable tv Expanded floor space for workstations Invasive, needs downtime
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Example of a modern control room at APS
Spacious, uncluttered Work stations and displays visible Real-time data comes to the control room via ethernet, not on signal cables (no spaghetti) Well lit Clean and maintainable Ergonomic layout Accelerator Controls and Beam Instrumentation Patrick Krejcik, LCLS
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LCLS schedule Commissioning of the LCLS RF photoinjector will begin in mid 2006, ~3 years from now Usage of the control room will continue to grow as more of the linac is commissioned for LCLS operation Planning, scheduling and costing of control room upgrades should start now Accelerator Controls and Beam Instrumentation Patrick Krejcik, LCLS
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