Wed 24 Jun 2009ATF2 weekly meeting Oxford MONALISA 1 MONALISA Double Bellow System Forces test results Oxford: June 2009

Wed 24 Jun 2009ATF2 weekly meeting Oxford MONALISA 2 MONALISA vacuum enclosure

Wed 24 Jun 2009ATF2 weekly meeting Oxford MONALISA 3 Double bellows system (DBS)

Wed 24 Jun 2009ATF2 weekly meeting Oxford MONALISA 4 Test programme Lateral spring constant Longitudinal forces (free) Longitudinal forces (attached to frame)

Wed 24 Jun 2009ATF2 weekly meeting Oxford MONALISA 5 Lateral spring constant set-up Double bellows off floor at one end Force gauge under bias tension Lateral spring constant Ambient pressure 35±5 N/mm Inner Evacuated 35±5 N/mm

Wed 24 Jun 2009ATF2 weekly meeting Oxford MONALISA 6 Longitudinal forces (free DBS) Force gauge under bias tension Double bellows upright resting on floor on one end (see next slide)

Wed 24 Jun 2009ATF2 weekly meeting Oxford MONALISA 7 Longitudinal forces (free DBS) N.B. Force remains within ±50 N

Wed 24 Jun 2009ATF2 weekly meeting Oxford MONALISA 8 Longitudinal forces (in-situ) We assembled parts into wooden frame –(Quadrupole end box not fitted) Placed force sensor –on downstream face of “Shintake monitor” –measures F in (electron beam) z direction Set up shown in next slide

Wed 24 Jun 2009ATF2 weekly meeting Oxford MONALISA 9 Longitudinal forces (in-situ): Set-up Shintake top plate Shintake end box

Wed 24 Jun 2009ATF2 weekly meeting Oxford MONALISA 10 Longitudinal forces (in-situ): Set-up Strain sensor (see next slide) mounted behind Shintake monitor plate mounted on independent block Mounting rods removed for forces test

Wed 24 Jun 2009ATF2 weekly meeting Oxford MONALISA 11 Force sensor close-up Force sensor

Wed 24 Jun 2009ATF2 weekly meeting Oxford MONALISA 12 Forces on Shintake end: 1

Wed 24 Jun 2009ATF2 weekly meeting Oxford MONALISA 13 Forces on Shintake end: 2

Wed 24 Jun 2009ATF2 weekly meeting Oxford MONALISA 14 Entire assembly holds vacuum Breaking news