Jorg, Andy, VK – 26Aug08 1

Sector Test Beam 2 - Dispersion, Matching

• Dispersion

– Measured with frequency trims on the LHC frequency → SPS frequency at flat top coupled

– Maximum possible frequency trims +/- 2.4 kHz: dp/p +/- 3 permille

• Weekend 8/9 of August only +/- 800 Hz possible

...re-phasing worked...

Jorg, Andy, VK – 26Aug08

Dispersion 23 (1)

• Changes of polarity of the odd QTLs solved point 3 issue, measured also IR3 (TCSG.5L3.B1 was out)

• Less good in the arc now...

2

Results from weekend 8/9 of August

Jorg, Andy, VK – 26Aug08

Dispersion 23 (2)

3

Results from weekend 23/24 of August

Jorg, Andy, VK – 26Aug08

Matching with Screens (Sector 87)

• Not fully analysed yet

• Can load optics with file...

– (including tilt in LHC)

4