Working Group DL: Driver-LINAC

Conveners:

Draft Agenda

Wednesday afternoon, March 10 (14:00–17:30) Driver Linac Session "Ion Beam Production and Interface Issues"
Title/Session	Speaker	Topics to be covered
Session Chair: Claude Lyneis (LBNL)
Interface issues with the RIA driver linac	K. Shepard (ANL)	1. What ions are important for experiments (ISOL, fragmentation, Gas-stopping)? 2. Ion Source Performance Ion source and LEBT characteristics and solutions, species and intensities, rare stable isotope production, ion source configurations (number and type) 3. Interface to the linac and operational aspects Injection voltage, emittance, beam intensity control, reliability, beam change time, beam stability. breakdown and lifetime issues 4. Facility Impact Space, power, cryogens, auxillary area for development, number of high voltage platforms, power requirements. Requirements for various ion species and their production possibilities, beam intensities, special requirements – (space, vacuum, HVAC, power, cooling), time for changing species, need for test stand/development area, spares, number of sources, maintenance periods, ion transport to linac (magnetic/electrostatic lenses), material issues, breakdown, lifetime, impurity issues, types of sources, expected beam properties, user constraints, simultaneous beam operations.
Driver Beams Required for the RIA Accelerator	R. C. Pardo (ANL)
ECR Ion sources for RIA	D. Leitner (LBNL)
Increasing scientific output of RIA using dual injectors	B. Rusnak (LLNL)

Thursday morning, March 11 (9:00–12:30) Joint Driver Linac Session with Target Area Session
Title/Session	Speaker	Topics to be covered
Session Co-Chairs: Tony Gabriel (ORNL) and Petr Ostroumov (ANL)
Low energy p production	J. D'Auria (SFU)	Beams most required by user community Switching from one to other ion species How many targets are required simultaneously Reliability – beam stability Beam trips and restart cycles Switchyard/beam sharing Variable beam intensity ratios Beam change and tuning time Beam size and shapes on target requirements
Lessons learned from CEBAF commissioning	A. Hutton (JLAB)
CEBAF switchyard	C. Hovater (JLAB)
Requirements to the beam switchyard	J. Nolen (ANL)
Variable intensity mode of the RIA driver linac. Light ion injector for the driver	P.N. Ostroumov (ANL)

Thursday afternoon, March 11 (14:00–17:30) Driver Linac Session "Beam Delivery to the Production Area – Issues and Interfaces"
Session Chair: Petr Ostroumov (ANL)
ISAC commissioning, tuning, energy adjustment, beam delivery to experiments	R. Laxdal (TRUMF)	Accelerated beam properties Switchyard Beam intensities on the targets Simultaneous beams Experience with existing complex switchyards Maintenance periods Stability requirements Monitoring species and current Start-up "burps" Safety issues Radiation environment Different currents to different targets, etc. Reliability – beam stability Beam trips and restart cycles
Radioactive beam delivery at ORNL	D. Stracener (ORNL)
LANSCE operation and beam delivery	L. Rybarcyk (LANL)
Heavy Ion Beams in ATLAS	G. Zinkann (ANL)
CCF operations and RIA implications	A. Stolz (MSU)

Friday morning, March 12 (9:00–12:30) Joint Driver Linac Session with Secondary Beam Delivery Session
Session Co-Chairs: Guy Savard (ANL) and Stan Schriber (MSU)
Status and reliability of ISAC systems	K. Fong (TRIUMF)	Accelerated beam properties, RI beam distribution,   experience with existing complex switchyards, monitoring species and current, start-up “burps”,   multi-user operation Reliability – beam stability. Beam purification.
ATLAS operation and upgrade for RIA	R.C. Pardo (ANL)
Weak beam diagnostics	D. Shapira (ORNL)
Expectations	M. Smith (ORNL) R. Janssens (ANL)

Friday afternoon, March 12 (14:00–17:30) Driver Linac Session "Towards Reliable Operation of the Driver Linac"
Session Chair: Stan Schriber (MSU)
Performance analysis of the SNS cavities	J. Delayen (JLAB)	Failure modes and reliability issues,  high gradient issues, replacement times, lifetimes of components,  control/interlock systems, maintenance of high-power machine, experience with existing SC linac operation, operational criteria, spares, pre-ops and tuning, work-around solutions, radiation, adequate space for equipment installation and removal, linac layouts for efficient and cost-effective operations, etc.
CEBAF performance knowledge database	S. Suhring (JLAB)
Lessons learned from “Isabel”	A. Hutton (JLAB)
Reliable linac design ideas for RIA based on the ATW design concept	T. Wangler (LANL)
High power accelerator fault handling	B. Garnett (LANL)
SCRF at TRIUMF	R. Laxdal (TRUMF)
SCRF at MSU	T. Grimm (MSU)
Clean processing of drift-tube cavities and test results	M. Kelly (ANL)
LANSCE reliability lessons	G. Jones (LANL)
SNS Expectations and planning	TBA (ORNL)