2,798 research outputs found

    Interview 2000.04 Dr. Carolyn Wells

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    Dr. Carolyn Wells, a former science professor at Longwood, discusses her unawareness to the educational situation in Prince Edward when she arrived in 1955. She also discusses Longwood\u27s physical growth in the 1960s, and Dr. Gordon Moss who was dean during her early years at Longwood. This interview was conducted by Lance Williams and Tricia Ramsey

    CHHS August eNewsletter

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    CHHS March 2011 E-Newsletter

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    The impact of low energy proton damage on the operational characteristics of EPIC-MOS CCDs

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    The University of Tübingen 3.5 MeV Van de Graaf accelerator facility was used to investigate the effect of low energy protons on the performance of the European Photon Imaging Camera (EPIC), metal–oxide semiconductor (MOS), charge coupled devices (CCDs). Two CCDs were irradiated in different parts of their detecting areas using different proton spectra and dose rates. Iron-55 was the calibration source in all cases and was used to measure any increases in charge transfer inefficiency (CTI) and spectral resolution of the CCDs. Additional changes in the CCD bright pixel table and changes in the low X-ray energy response of the device were examined. The Monte Carlo code Stopping Range of Ions in Matter (SRIM) was used to model the effect of a 10 MeV equivalent fluence of protons interacting with the CCD. Since the non-ionising energy loss (NIEL) function could not be applied effectively at such low proton energies. From the 10 MeV values, the expected CTI degradation could be calculated and then compared to the measured CTI changes

    CHHS February 2011 eNewsletter

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    CHHS June 2016 ICYMI

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