# Presentation: 384567

## Technical Board Meeting

- Members
- How the Board will operate
- How to run technical board meetings
- List of items that need to be discussed in the upcoming weeks/months.

## Proposed MembershipOthers invited per topic (s) under discussion

- Cornell, H. Padamsee - Chair
- SMTF spokespersons – Helen, Nigel
- INFN – Carlo Pagani
- KEK – Saito, Hayano
- DESY –  Simrock, Dieter Proch/Hans Weise (depends on who can come)
- Argonne –  Mike Kelly
- Brookhaven - Ilan BenZvi
- Fermilab  - Bill Foster, Harry Carter
- LBNL – John Corlett
- Los Alamos - T. Tajima
- MSU – T. Grimm
- ORNL – Campisi
- SLAC – Chris Adolphsen
- Jlab – J, Preble, P. Kneisel

## Proposed draft charges for the SMTF Technical Advisory Board are:

- 1)      Provide advice to the SMTF collaboration on technical activities towards reaching the goals of the SMTF, for the International Linear Collider, Proton Driver, Rare Isotope Accelerator and CW R&D projects.
- 2)      Give recommendations/suggestions to the SMTF spokespersons and Institutional Board.
- 3)      Review important objectives, schedules and priorities of upcoming activities at SMTF.
- 4)      Provide input to the definition of technical milestones at six month intervals.
- 5)      Review SMTF progress at six month intervals, identifying gaps and possible problems in the SMTF program.
- 6)      Provide input to help optimize the SMTF objectives.
- 7)      Give summary reports to the SMTF collaboration.

## How the Board will operate

- Define issue, options..
- Discussion, action items
- Aim for overall consensus, overall inclusivity
- .
- If too contentious, then vote.

## Open List of items that need to be discussed in the upcoming weeks/monthsFrom discussions with Helen and Nigel

- Cryomodule related topics
- Cavity related topics
- Snowmass prep
- Industrialization
- PD topics
- CW topics
- RIA topics

## Proposal: 

- Go through listAdd items to list(Resist detail discussion for now)Discuss one item which is urgent and information is ripe4th Gen Cryomodule (Helen)

## Cavity related topicsfor 30 MV/m and also higher gradient

- Continue effort to obtain three cavities from DESY for Jlab, FNAL and Cornell to help qualify facilities
- Develop a set of tools at one lab to make TESLA cavity
- e.g. dies and welding jigs.
- Make a 9-cell cavity out of large grain
- Make 9- cell cavity re-entrant shape
- Discuss 3.9 GHz deflecting cavity development for
- ILC crab cavity/CW light source
- Discuss 3.9 GHz, harmonic cavity for injector, possible use for ILC bunch compression,

## 4th Generation Cryomodule..

- Discuss pros and cons of different module layouts now under consideration for first US-ILC module,See Helen’s spreadsheets/slides
- Hold a module meeting at PAC?
- Choose, eventually
- Organize troops to make a video of DESY cavity preparation and cryomodule assembly for industrial and lab training

## Other componentscouplers, tuners, etc

- Develop 1.3 GHz fast ferrite phase shifter tuners for ILC
- Get the most of cavity gradients
- Use for high power processing couplers with stub tuner..conditioning modules

## Snowmass Related

- Gather items worthy of discussion at Snowmass
- Should we have a pre-Snowmass meeting for e.g. at Cornell SRF2005
- Available time: Sunday, Friday afternoon

## Industrialization

- Set up industrialization workshop, host Jlab?LANL?
- We need Jlab to participate in development of joint industrialization plan (GDE, SMTF, US-regional capability)
- Develop industrialization philosophy
- Develop industrialization plan
- Attract big industries...
- Take new industries under wing
- e.g. ADC (Advance Design Consulting) under one laboratory wings (Jlab?)
- ADC made cryomodule shells for SNS/Jlab
- Fund specific industrial development studies for specific parts of the process, or for specific components
- Like DESY coupler study

## PD type issues (drawn from PD review)

- Is the gradient 26 MV/m assumed for the elliptical cavities too  near the current state of the art?
- o	10 to 400MeV:
- 3-spoke,  bβ=0.61, 325 MHz
-  or elliptical bβ=0.47 and 0.61, 1300 MHz
- 400 to 1200 MeV: elliptical b=0.81, 1300 MHz
- The β=0.47 and (to a lesser degree) the 0.61, 1300 MHz elliptical cavities have not been developed and are quite different from any elliptical cavity developed so far.
- Fabricate and test some models?   Where?
- Dressed cavities – couplers, tuners, cryomodules
- Test 4.5 ms operation

## CW

- Can we get one of the Rossendorf modules from HEPL, shutting down?
- Make plan for CW cryomodule
- e.g. Modify two 7-cell cavities sent to Cornell by DESY
- Install two 7-cell cavities sent to Cornell by DESY with HOM loads..