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We discuss the progress made on a new installation in Fermilab's MainInjector that will help investigate the electron cloud phenomenon by makingdirect measurements of the secondary electron yield (SEY) of samples irradiatedin the accelerator. In the Project X upgrade the Main Injector will have itsbeam intensity increased by a factor of three compared to current operations.This may result in the beam being subject to instabilities from the electroncloud. Measured SEY values can be used to further constrain simulations and aidour extrapolation to Project X intensities. The SEY test-stand, developed inconjunction with Cornell and SLAC, is capable of measuring the SEY from samplesusing an incident electron beam when the samples are biased at differentvoltages. We present the design and manufacture of the test-stand and theresults of initial laboratory tests on samples prior to installation.

Secondary Electron Yield Measurements of Fermilab's Main Injector Vacuum Vessel