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JLab Update

JLab Update. RG ILC Cavity Group Meeting July 20, 2010. TB9NR001 optical inspection and tracking 1 st inspection as received 2 nd inspection after USC + BCP 10um. Equator_NR001_E1_Z161mm_146Degrees0170. Lots of dust particles observed on as-received surface.

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JLab Update

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  1. JLab Update RG ILC Cavity Group Meeting July 20, 2010

  2. TB9NR001 optical inspection and tracking • 1st inspection as received • 2nd inspection after USC + BCP 10um

  3. Equator_NR001_E1_Z161mm_146Degrees0170 Lots of dust particles observed on as-received surface. Efficient removal of them by USC + BCP 10 um evident TB9NR001

  4. Equator_NR001_E1_Z171mm_353Degrees0085 Lots of pits observed near equator EBW on as-received surface USC + BCP 10 um ineffective in removing these defects Consistent with previous observations at JLab What is new: pit density significantly higher than early cavities TB9NR001

  5. A Very Large Defect on RF Surface of TB9NR001 Cell#4 (51mm, 175Degree), near equator EBW As received After BCP 10 um

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