Apparatus and Technique for Measuring Low RF Resistivity of Tube Coatings at Cryogenic Temperatures
Award last edited on: 9/20/2013

Sponsored Program
Awarding Agency
Total Award Amount
Award Phase
Solicitation Topic Code

Principal Investigator
Henry Poole Jr

Company Information

Poole Ventura Inc (AKA: PVI)

321 Bernoulli Circle
Oxnard, CA 93030
   (805) 981-1784
Location: Single
Congr. District: 26
County: Ventura

Phase I

Contract Number: ----------
Start Date: ----    Completed: ----
Phase I year
Phase I Amount
In-situ technique for coating of stainless steel vacuum tubes with Cu, to mitigate the problems of electron clouds and wall resistivity in accelerators trying to increase luminosity, was developed. Before coating the RHIC vacuum system with copper, it is imperative to test Cu coating conductivity at cryogenic temperatures to ensure coating effectiveness in lowering resistivity. Folded quarter wave resonator structures are to be built inside a cryogenic system to measure RF resistivity of copper coated RHIC tubing. Samples prepared with different magnetron deposition modes are to be measured by the apparatus. Cu coating is to be optimized by iterative processes. Design an apparatus that would facilitate experimental determination and optimization of the RHIC copper coating that would result in minimal RF resistivity of the RHIC vacuum chambers at cryogenic temperatures. Design is based on making the resonator structure out of a superconducting material (niobium or copper plated lead) such that the copper coating is the most lossy material. Commercial Applications and Other

Device for measuring electrical resistivity of materials at low temperatures can impact couplers & amp; other components that transmit power between cryogenic & amp; higher temperatures. In-situ coating of existing accelerator vacuum tubes with Cu is cost effective for mitigating problems in accelerators trying to increase luminosity. The ability to in-situ coat tubes & amp; pipes can enhance the capability of existing high purity material processing operations.

Phase II

Contract Number: ----------
Start Date: ----    Completed: ----
Phase II year
Phase II Amount