The failed extraction electrode was inspected in the hot cell this morning by Anders and Chad. The following electrical measurements were taken

• EE on target assembly as recieved from TM after online operation. 14 Ohm
• EE removed from target assembly and placed on conductive flat surface. ~1 G-Ohm at 1kV
• EE installed back onto target assembly (fasteners not tightened).~ 0.8 G-Ohm at 1 kV

There was some material deposited on the EE. Some of which has fallen off - possibly during removal of the electrode from the target assembly. It seems the cause of the short was material build up between plasma electrode and extraction electrode. See photos.

The heat shield lid was removed after lunch. This revealed a broken target. The target may have broken after operation (in hot cell).

Photos are available on DocuShare