Uppsala University, WP 9.2 In-situ discharge experiments inside an Electron-microscope Field emission probe Simple scanning Cut and Slice, voids Upgrade.

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Uppsala University, WP 9.2 In-situ discharge experiments inside an Electron-microscope Field emission probe Simple scanning Cut and Slice, voids Upgrade of the Two-beam test stand in CTF3 Upgrade diagnostics: position monitors, screens, and FlashBox PETS based phase monitor FP7 EuCARD, Warszawa Uppsala University WP9.2

Breakdown in SEM 5 4 3 2 1 P5 * Included basic scanning capability in the piezo-motor probe stage * Grains visible in optical and electron-microscope, also done EBSD * Voltage at which 10 nA FE current is reached varies and is not really correlated with grains. 4µm in SEM image FP7 EuCARD, Warszawa Uppsala University WP9.2

Surface and sub-surface analysis Cause discharge with W tip on copper sample and analyze the discharge site with EDX Cut and slice, observed sub-surface voids P2 P1 FP7 EuCARD, Warszawa Uppsala University WP9.2

TBTS upgrade New BPM electronics; new MTV; FLASHbox New photo tubes and cavity BPMs New MTV BPM electronics FLASHbox FP7 EuCARD, Warszawa Uppsala University WP9.2

PETS phase monitor Use PETS with recirculation as phase monitor Electric field at sample m depends on field at time one round-trip time earlier and the driving current Im and its arrival phase αm Phase for 23 different beam pulses are very similar FP7 EuCARD, Warszawa Uppsala University WP9.2