Gennady Romanov

Production of 325 MHZ single spoke resonators at FNAL

The High Intensity Neutrino Source (HINS) project represents the current effort at Fermi National Accelerator Laboratory to produce an 8-GeV proton linac based on about 400 independently phased superconducting resonators. Eighteen beta= 0.21 single spoke resonators, operating at 325 MHz, comprise the first stage of the linac cold section. We present the production status of the first two of these resonators along with progress on the slow tuning prototyping. In particular, we report on the construction phases, the pre-weld tuning process and the comparison of low power RF measurements with calculations.

Microwave quality assurance effort for R&D on the Next Linear Collider at Fermilab

To build the Next Linear Collider, about 5000 accelerator structures are needed in the design considered which has 206 disks per structure. In order to explore the feasibility of making these structures in an industrial environment (that is, outside a national laboratory setting), 12 copper disks were fabricated by a diamond turning factory. Both mechanical inspection and microwave measurement results of these disks are presented.

CW ROOM TEMPERATURE RE-BUNCHER FOR THE PIP-II LINAC FRONT END

At Fermilab there is a plan for improvements to the Fermilab accelerator complex aimed at providing a beam power capability of at least 1 MW on target. The essential element of the plan (the Proton Improvement Plan II – PIP-II) is a new 800 MeV superconducting linac. The PIP-II linac consists of a room temperature front-end and a high energy part that uses five types of superconducting cavities to cover the entire velocity range required for beam acceleration. The room temperature front end is composed of an ion source, low energy beam transport line (LEBT), radio frequency quadrupole (RFQ), and medium energy beam transport line (MEBT). The paper summarises design of a re-buncher cavity used in the MEBT section.