  Project-X is a proposed project to be built at Fermi National Accelerator
Laboratory with several potential missions. A primary part of the Project-X
accelerator chain is a Superconducting linac, and In October 2009 a workshop
was held to concentrate on the linac parameters. The charge of the workshop was
to "..focus only on the SRF linac approaches and how it can be used...". The
focus of Working Group 2 of this workshop was to evaluate how the different
linac options being considered impact the potential realization of Muon
Collider (MC) and Neutrino Factory (NF) applications. In particular the working
group charge was, "to investigate the use of a multi-megawatt proton linac to
target, phase rotate and collect muons to support a muon collider and neutrino
factory". To focus the working group discussion, three primary questions were
identified early on, to serve as a reference: 1) What are the proton source
requirements for muon colliders and neutrino factories? 2) What are the issues
with respect to realizing the required muon collider and neutrino factory
proton sources? a. General considerations b. Considerations specific to the two
linac configurations identified by Project-X. 3) What things need to be done
before we can be reasonably confident that ICD1/ICD2 can be upgraded to provide
the neutrino factory / muon collider needs? A number of presentations were
given, and are available at the workshop web-site. This paper does not
summarize the individual presentations, but rather addresses overall findings
as related to the three guiding questions listed above.
