1. Materials, Fabrication and Integration Group
Chair: Carlos Hernandez-Garcia (JLAB)
Co-Chair: Vitaly Yakimenko (BNL)

2. Present technologies to achieve high average power: DC, RF, SRF
Practical experience in each technology
Scalability beyond 10 mA DC
Drive laser technology
Available average power at required wavelengths
Pulse structure
Cathode technology
Metallic vs. NEA semiconductors
New concepts and ideas
QE and lifetime
Can the cathode sustained the gradient?
Practical experience

3. High charge AND high average current
Do we have the RF power?
Again…cathode lifetime and QE
High brightness, preserving the transverse emittance, but can one preserve the longitudinal emittance?
Small transverse emittance achieved with high gradient at cathode
Longitudinal space charge forces during creation and acceleration of the bunch

4. Minimizing halo (transverse and longitudinal)
This will be a big issue for 100 mA and beyond
Higher power drive laser, more scattered light landing on the cathode
Eliminating longitudinal halo induced by cathode response time
No problem with metallic cathodes, but low QE
A problem with NEA semiconductor cathodes, but high QE

5. Come join us, there will be plenty of material for discussion