July LEReC Review July 2014 Low Energy RHIC electron Cooling (LEReC) Alexei Fedotov Project Management

July Outline Safety LEReC Accelerator Improvement Project (AIP) –The big picture –Project Management Responsibilities –Project organization chart –Cost/Funding/Scope –Contingency –Risk –Schedule and Milestones –Key Performance Parameters (KPPs) and Ultimate Performance Parameters (UPPs) Summary 2

July Safety The Lab makes safety a top priority; strong emphasis on working safely. Safety will not be compromised on this project. Environmental, Safety, Security, Health and Quality (ESSHQ) Division of the Collider-Accelerator Department (C-AD) is very experienced and very helpful. They work along our side in the field in helping with work planning, process reviews, procedure writing, etc. We have all become sensitive to what is required to work safely, are accustomed to the processes and receive the appropriate training. We have a high confidence that this project will be done safely. 3

July LEReC – small part of a bigger picture 4 Implementation of LEReC for physics program in 2018 requires project start in FY14. We assumed project start date of August 15, 2014.

July Project Management Responsibilities Within DOE’s Office of Science (SC), the Office of Nuclear Physics (ONP) has overall responsibility for the LEReC Accelerator Improvement Project (AIP). Michelle Shinn serves as the LEReC Point of Contact for ONP, and reports to Jehanne Gillo (Director of Facilities and Project Management and acting Facilities Program Manager). Funding for this project will be directed through BNL’s Collider- Accelerator Department (C-AD). Fiscal and management responsibility for the fabrication of LEReC will reside with the C-AD’s AIP Manager Wolfram Fischer. The Chairman for the Collider-Accelerator Department, Thomas Roser, has appointed Alexei Fedotov as the LEReC Contractor Project Manager(CPM). 5

July LEReC Organization Chart 6

July Subsystem responsibility in C-AD Org Chart ESSH&Q Large resource pool. Each task is supported by an established group.

July Work Breakdown Structure (WBS) and Cost Estimate 8 ESSH/QA is an overhead charge.

July Contingency The SRF gun and SRF cavity already exists and is under commissioning. Beam line systems are similar to the one built for ERL and CeC PoP. Slightly enhanced contingency was allocated for new 2.1 GHz warm cavity and SRF gun related items. 9

July Manpower/Availability Several C-AD projects and endeavors have either recently or will soon come to a close. This will increase the manpower available for LEReC. 10 ResourceEstimateFTEs Designer Engineer Technician Purchases $ 4,846,190 Travel $ 26,000 Total Labor/FTEs Total Material (unburdened) $ 4,872, FTE/3 years/10 groups: 1.6 FTE per group Details in K. Mirabella presentation.

July Funding 11 LEReC will be built using Accelerator Improvement Funds FY14$: Allocated funds.

July Criteria for Risk Identification and Assessment Likelihood of Occurrence Very likely (VL): risk is likely to occur with a probability greater than 90% Likely (L): risk is likely to occur with a probability greater than or equal to 50% Unlikely (U): There is a less than 50% chance that this event will occur 12

July Risk and Mitigation 13 Individual risk items will be addressed in corresponding talks. WBSRisk DescriptionType of Risk Conseque nce Likeli-hood Cost Impact (burdened $k) Risk ExpirationMitigation Plan High Risk 1.0 Changes in BNL labor rates, overhead rates, and rate application methodology affects cost. If rates change drastically it may affect schedule if it causes a staffing freeze/reduction in force. Schedule, CostLevel 1VL2003QFY17 Use contingency, request exemption from BNL overhead increases. 1.0 Production delivery date delays by vendors on multiple components for magnets, power supplies, RF equipment, cryogenic, instrumentation, etc. Schedule, CostLevel 2VL02QFY17 BNL purchasing division has assigned a single point of contact for all LEReC procurement who will work with engineering staff on procurement and oversee vendor performance to schedule. Medium Risk 1.0 Cryogenic systems, magnet systems, RF systems, and civil construction will require design and engineering support in from 3QFY14 through 1QFY16 for detailed modeling, design, and installation drawings needed for equipment specific to this project.ScheduleLevel 2L---3QFY17 Use of overtime in the design room, limiting additional new projects during LEReC design, realigning project priorities, and hiring staff if needed. 1.0 Gun does not demonstrate charge per bunch 100pC (1mA average current) Cost, Schedule, TechnicalLevel 1U7001QFY15 If current is not achieved by December 31, 2014 will purchase a DC gun. 1.5 Transport line lattice is modified as a result of design optimizations. Schedule, CostLevel 2L1001QFY15 Magnets, power supplies, and other components will be purchased with adequate margin to cover modifications. Vacuum beam line components will be fabricated after lattice and magnet designs are finalized. 1.6 The present plan is to use He from the RHIC refrigertor to cool the cathode. If the heat load is too high then an LN2 cooling system will be need for the cathode to improve cooling performance.CostLevel 2L3803QFY15 The new cathode design will be tested in 912 ERL. A cost estimate as been done for adding an LN2 cooling system at 02:00 in RHIC which will be installed if the heat load is too high or inefficient for the RHIC refrigerator.

July Risk and Mitigation Low Risk Solenoid end fields are greater than modeled, effectively shortening the cooling region.CostLevel 2U1003QFY17 Solenoid fields and mu metal shields will be magnetically modeled and first article assemblies will be magnetically measured to verify shielding effectiveness. Helmholz coils will be used if necessary SRF Gun Cathode lifetime, as determined by ERL testing, is lower than design specification. Technical, CostLevel 2U2504QFY15 Cathode insertion system will have to be redesigned to allow the loading and remote changing of multiple cathodes for efficient RHIC operations. This load lock assembly must be designed to Torr vacuum. 1.0RHIC operating schedule/priorities cause installation delayScheduleLevel 2U---3QFY16 Careful installation planning, install early, work 2 shifts, coordinate with C-AD Ops. 1.0 Incoming inspection and testing delays for new components for magnets, power supplies, RF equipment, cryogenic, instrumentation, etc.ScheduleLevel 2U02QFY17 Maintain staffing levels and funding to support operations, testing of new equipment, and installation. Use of overtime where necessary Power supply tolerances (stability) out of specificationsTechnicalLevel 3U---3QFY17 Frequent communication with manufacturer, testing and verification upon delivery 1.8 Permanent work platforms are required above the eGun and SCRF Linac cryostats to provide safe access for welders and technicians installing/maintaining cryogenic and RF equipment. The platforms need to be integrated with clean rooms for vacuum system installation. Technical, CostLevel 3L1001QFY16 Some components will be taken from the ERL blockhouse; but the differences in space configuration between RHIC and ERL may require new equipment or modifications to existing equipment Failure of upstream magnet(s) designed for over- focusing/spreading of the beam will impact the dump and could possibly burn a hole in the dump itself Technical, CostLevel 2U1504QFY17 Testing of existing ERL will provide experience in beam control and insight into energy dissipation into the beam dump. Interlocks should be in place to monitor x-ray production/distribution from dump, over-focusing magnet current and temperature, dump level vacuum. 1.0 The LEReC return beam lines adjacent to the triplet in the 01:00 section of RHIC will make access to the LEReC equipment difficult.TechnicalLevel 3L03QFY16 The cable tray, water lines, air lines, magnet, instrumentation, and vacuum stands need to be carefully designed to provide access to the equipment and to meet safety rules for egress. 14 Individual risk items will be addressed in corresponding talks.

July Risk Assessment Risk of not proceeding with LEReC: Luminosity required for RHIC physics program at low-energies (Beam Energy Scan II) requires successful and in time implementation of LEReC. Technical risk: - SRF gun is already built and is under commissioning. - The plan is to demonstrate 100 pC charge from the Gun with present configuration. If charges of 100 pC from the gun are not demonstrated by December 31, 2014, we proceed with the DC gun back-up. 15 WBSRisk Description Type of Risk Consequ ence Likeli- hood Cost Impact (burde ned $k) Risk Expirati on Mitigation Plan Medium Risk Gun does not demonstrate charge per bunch 100pC (1mA average current) Cost, Schedule, TechnicalLevel 1U7001QFY15 If current is not achieved by December 31, 2014 will purchase a DC gun.

July Schedule 16

July Schedule (continued) 17 Assumes project start: Aug 15, There are 9 months of float from completion of the final task to a DOE reporting milestone for Project complete.

July Reportable Milestones 18 All milestones are based on Project start August 15, Reporting Milestonesdate LEReC Project StartQ4FY14 Webreq for 704MHz laser pinnedQ4FY14 Webreq for eGun 60 kW RF HPA pinnedQ1FY15 Webreq for 6" solenoid magnetsQ1FY15 Webreq for 90o and 45o dipolesQ2FY15 Design Review & initial Accelerator Systems Safety ReviewQ3FY15 eGun modifications for CW operation in Bldg.912 completeQ4FY15 Install RHIC beam line 6" solenoid magnets and vacuum chambersQ1FY16 eGun CW operation in Bldg. 912 completeQ3FY16 Install eGun and 5 Cell SRF cavity in RHIC IP2Q1FY17 Install vacuum chambers, magnets, and beam diagonostic - bakeoutQ1FY17 Install final cable tray, water, and air linesQ2FY17 Install cryogenic system warm and VJ pipingQ2FY17 Component commissioningQ3FY17 Project CompleteQ3FY18

July Critical Path Commissioning of SRF gun in Bldg. 912 drives most of installation and testing of LEReC in RHIC tunnel. - Demonstration of 100 pC charge from SRF gun in its present configuration: December All 704 MHz laser components received: April 2015 (6 mo. lead) -2.1 GHz assembly available for inst.: January 2016 (12 mo. lead) -RF power amplifiers: March 2016 (12 mo. lead) -SRF gun modifications for CW operation complete: June SRF gun CW operation in Bldg. 912 complete: June All new cryo components available for installation: June All systems installed in RHIC tunnel: March

July Key Performance Parameters (KPP) LEReC KPPs: 1. Demonstration of 10 mA average electron beam current in stable CW (704 MHz repetition rate) operation from the SRF gun at voltage of 1.6 MV in Bldg All LEReC hardware (from the SRF gun to the beam dump) installed in its final location in RHIC tunnel at IP2. 3. Demonstration of beam transport of 1 mA electron current at an energy 1.6 MV through the full LEReC beam transport line from the gun through the cooling sections to the beam dump. 20

July Ultimate Perfomance Parameters (UPP) LEReC UPPs, represent parameters required for cooling demonstration with configuration of electron accelerator in RHIC tunnel at IP2: 1. Demonstration of 30 mA average electron beam current in stable CW operation in full LEReC configuration in RHIC tunnel at gun voltage of 1.6 MV. 2. Achieving electron beam parameters in the cooling section needed for cooling: rms energy spread of < 1×10 -3 and rms normalized emittance of < 3 mm mrad for electron bunch charge of 100pC. 3. Demonstration of electron cooling process of ion bunch with bunched electron beam. 4. Luminosity increase of at least factor of two. 21

July Summary The LEReC design is technically sound –SRF gun and 5-cell cavity are already built and presently under commissioning –Most of remaining beam elements are similar to those already build for the R&D ERL and CEC PoP experiment Detailed cost estimate exists, including contingency of 29% (details in subsequent talks). More detailed engineering will refine the estimate and schedule. The project team is very experienced. They know how to build things (Booster, RHIC, NSRL, SNS, EBIS, eLens…) 22