F. Gerigk, S. Ramberger, M. Schuh, M. Jarosz, J. Borkowski, G. DeMichele

DTL

• After the vacuum test (1.2*10-6 mBar ) it is ready for bead pull measurements in bld 169. The Bead-Pulling system is installed in place.
• To allows tilt sensitivity measurements the Cu end-cones will be machined with holes to allow bead-pull measurements. At the moment the prototype has Al end-cones.
• The prototype should be ready for HP test in the middle of September.

Bead-Pulling Program

• Works now on slow PC
• Ready to be tested on the prototype. A comparison between the old code and the new one with continuous data-point acquisition will be done.

Power Splitter - Magic T

• The role of the posts and rod in the structure has been studied.
• The dimensions and/or the position of the two posts will be changed to get an asymmetric power splitter.
• Another solution could be the introduction of a short circuit on the port 4 in order to take advantage of the fact that the energy flow out of ports 2 and 3 is out of phase.
• Peak fields in the structure should be checked.

HOM

• First results on chopped beam effects. Plot.

-- MarcelSchuh - 14 Aug 2009