1. Update on the JLEIC pCDR
pCDR-65 FY18 delivery
and
pCDR-100 FY19 development
Todd Satogata
CASA
Accelerator Division
JLEIC Collaboration Meeting April 1-3, 2019

2. Deliver pre-CDR to Jefferson Lab leadership by end FY18 Objectives
One Year Ago…
Deliver pre-CDR to Jefferson Lab leadership by end FY18
Objectives
Document a JLEIC self-consistent design
Update, integrate, expand previous documents
Document enough detail for reasonable costing
Establish infrastructure to maintain consistency
Establish documentation trail and reference tech note series
Balance deliverable scope with resources
Meta-objective
Establish team and infrastructure for anticipated CDR

3. Deliver pre-CDR to Jefferson Lab leadership by end FY18 Objectives
End of FY18
Deliver pre-CDR to Jefferson Lab leadership by end FY18
Objectives
Document a JLEIC self-consistent design
Update, integrate, expand previous documents
Document enough detail for reasonable costing
Establish infrastructure to maintain consistency
Establish documentation trail and reference tech note series
Balance deliverable scope with resources
Meta-objective
Establish team and infrastructure for anticipated CDR
Objectives
Achieved!!

4. Overview JLEIC pCDR-65 JLEIC pCDR-100
Draft delivered end FY18 to JLab Leadership
100 GeV hadron complex, = 65 GeV
408pp
12 chapters, 2 appendices
Consistent with August 2018 costing exercise
JLEIC pCDR-100
Draft in development, due late April 2019
200 GeV hadron complex, = 100 GeV
A full-document revision of pCDR-65
~400pp
12 chapters, 1 appendix
Cost-neutral relative to pCDR-65
All machines updated except ion sources
Over 35 contributors, over 10 reviewers

5. pCDR-65 Chapters 1-2 Chapter 1 Chapter 2
Essentials of facility motivation and context
Design capabilities and comparison to requirements (e.g. white paper)
Luminosity curves
Facility high-level overview
Site plan
Document structure and overview
Chapter 2
Nuclear physics motivations
Reiteration of white paper requirements
Emphasis on nuclear femtography
Extended physics requirements
Justification for high luminosity motivation

6. pCDR-65 Chapter 3 Chapter 3 Fundamental design goals Design concepts
Luminosity
Polarization
High-level performance table

7. pCDR-65 Chapters 4-5 Chapters 4-5 Core machine design chapters
Electron and ion complexes
Sources and transport lines
Collider rings
Chromatic control schemes
Multipole tracking tolerances
DA for electron top-off
Polarization
spin rotators, spin control

8. pCDR-65 Chapter 6 Chapter 6 Staged electron cooling concept
Advantage of new ion complex
Three separate coolers
Conventional low-energy DC cooler
State-of-the-art high energy DC cooler
Collider ERL cooler
ERL-cooler specific components
e.g. harmonic kicker

9. pCDR-65 Chapter 7
Chapter 7
Interaction region requires separate chapter
Design concept including forward tagging
Authored by IR working group
Includes accelerator, nuclear physics
Includes MDI

10. pCDR-65 Chapter 8
Chapter 8
Beam dynamics relevant to collider complex and luminosity goals
Synchronization
Crabbing dynamics and tolerances
Beam-beam and collective effects
Including gear changing

11. pCDR-65 Chapters 9-10 Chapters 9-10 Technical and conventional systems
Systems engineering
Component preliminary designs
Subsystem counts, infrastructure estimates
Site utilities and code requirements

12. pCDR-65 Chapters 11-Appendices
Cryogenic requirement estimates
Heat loads and plant subsystems
ESH
Radiation control requirements
Appendix A
Alternative design for 100 GeV center of mass facility
Engineering and facility design estimates
Some of basis of pCDR-100 design

13. Summary JLab pCDR efforts span well over a year
pCDR-65 draft developed and delivered to lab management at end of FY18
Essentially a frozen reference design
Consistent with DOE costing exercise Aug 2018
Lab management decided to flesh out 100 GeV option to full pCDR update in FY19
Cost-neutral to Aug 2018 design
Warm ion low/high energy boosters
Electron collider ring reuse of PEP-II magnets
On track for delivery late April 2019