1. Wed 15 Jul 2009 ATF2 weekly meeting Oxford MONALISA 1 MONALISA at ATF2 First installation report 15 July 09

2. Wed 15 Jul 2009 ATF2 weekly meeting Oxford MONALISA 2 Overview Installation progress –ATF2 roof: Initial tests with wooden frame Initial test results –ATF2 FF: Mounted at IP in Final Focus Vacuum test Force tests Tilt tests Magnet lateral movement tests

3. Wed 15 Jul 2009 ATF2 weekly meeting Oxford MONALISA 3 Good progress We kept within our proposed schedule –As set out in ATF2 meeting 17 Jun 09 All items arrived at KEK 1 st July 2009 –Brought to ATF2 roof within 15 mins of arrival On ATF2 roof –System assembled and retested Brought to ATF2 Final focus tunnel –Reassembled at IP Thursday 9 th July and tested

4. Wed 15 Jul 2009 ATF2 weekly meeting Oxford MONALISA 4 On the roof of the ATF2

5. Wed 15 Jul 2009 ATF2 weekly meeting Oxford MONALISA 5 Preliminary tests Closed the vacuum system –Pumped out to 25 Pa –Limited by small leak (1 Pa/s) Due to lower angled tube Will be fixed in future by replacing lower angled tube Vacuum sufficient for test programme Reassembled wooden frame on ATF2 roof Benoit measured vibrations (see his talk)

6. Wed 15 Jul 2009 ATF2 weekly meeting Oxford MONALISA 6 Schematic Layout of Pneumatics Vacuum in end boxes connected through inner bellows High pressure only connected to outer bellows chamber

7. Wed 15 Jul 2009 ATF2 weekly meeting Oxford MONALISA 7 Recalibrated force sensors Retested force sensor –Applying loads using spring balance Force sensor rather noisy –Produces signals up to +/- 10 mV Readout with NI USB 6009 ADC (14 bit) –Sampled at 5kSa/s –Used LabVIEW to average 5000 readings together

8. Wed 15 Jul 2009 ATF2 weekly meeting Oxford MONALISA 8 Forces on frame during pumping Cycled bellow chamber pressures –Inner chamber 100 kPa to 25 Pa to 100 kPa –Outer chamber 100 kPa to 140 kPa to 100kPa Measured forces –Using recalibrated force sensor Independently calculated forces –Based on SMC pressure sensors One for each chamber

9. Wed 15 Jul 2009 ATF2 weekly meeting Oxford MONALISA 9 Sensor readout during pumping

10. Wed 15 Jul 2009 ATF2 weekly meeting Oxford MONALISA 10 Over-pressure regulation Over-pressure regulator does not behave as we would like Control Signal /V Overpressure / kPa 0 40 Vmax 0 No response for over-pressure requests less than (50 mbar)

11. Wed 15 Jul 2009 ATF2 weekly meeting Oxford MONALISA 11 Required over-pressure regulation Would want a straight line relationship even for very low over-pressure Control Signal /V Overpressure / kPa 0 40 Vmax 0

12. Wed 15 Jul 2009 ATF2 weekly meeting Oxford MONALISA 12 Into the ATF2 tunnel

13. Wed 15 Jul 2009 ATF2 weekly meeting Oxford MONALISA 13 Tunnel preparation Terunua-san installed pipe across the inside of the ATF2 final focus tunnel roof Equipped with 2 hoists

14. Wed 15 Jul 2009 ATF2 weekly meeting Oxford MONALISA 14 Mounting Shintake components Plate mounted using M30 hooks End box mounted using hoist Cables

15. Wed 15 Jul 2009 ATF2 weekly meeting Oxford MONALISA 15 Mounting QD0 end box Beeswax was placed on QD0 surface –To ensure good vibration coupling to magnet

16. Wed 15 Jul 2009 ATF2 weekly meeting Oxford MONALISA 16 End boxes mutually aligned Laser light projected along accelerator axis Shintake end box –(left-right adjustable) –Moved to match QD0 end box

17. Wed 15 Jul 2009 ATF2 weekly meeting Oxford MONALISA 17 The DBS was hoisted into place Full assembly completed well within one day

18. Wed 15 Jul 2009 ATF2 weekly meeting Oxford MONALISA 18 Tilt sensor Tilt change on Shintake ~5+5  rad –After MONALISA DBS installed at IP

19. Wed 15 Jul 2009 ATF2 weekly meeting Oxford MONALISA 19 DBS pumped out: with rods in Reached 28 Pa with a different pump –vacuum integrity was unaltered

20. Wed 15 Jul 2009 ATF2 weekly meeting Oxford MONALISA 20 Forces measured pumping down when mounted at ATF2 IP Regulator cycle ~225 s

21. Wed 15 Jul 2009 ATF2 weekly meeting Oxford MONALISA 21 (x,y,z) Physicists coordinates In the following we’re using the physicists coordinate frame Y X Z

22. Wed 15 Jul 2009 ATF2 weekly meeting Oxford MONALISA 22 Tracking QD0 motion in Z Set MONALISA at operational pressure –Pumped out vacuum vessel –Over-pressure in outer bellowed chamber Set up independent tracking of QD0 –Used FARO to survey QD0 position changes –Keyence laser meter tracked QD0 mounted on SD0 base plate

23. Wed 15 Jul 2009 ATF2 weekly meeting Oxford MONALISA 23 KEYENCE tracking QD0 Z Readout sensor in mV 10 V = 5 mm 1 mV = 0.5  m Readout with our ADC/LabVIEW DAQ QD0 Supported from SD0 KEYENCE

24. Wed 15 Jul 2009 ATF2 weekly meeting Oxford MONALISA 24 FARO survey instrument FARO Retro

25. Wed 15 Jul 2009 ATF2 weekly meeting Oxford MONALISA 25 Comparison of FARO & KEYENCE

26. Wed 15 Jul 2009 ATF2 weekly meeting Oxford MONALISA 26 FARO compared with KEYENCE

27. Wed 15 Jul 2009 ATF2 weekly meeting Oxford MONALISA 27 FARO tracking X and Z

28. Wed 15 Jul 2009 ATF2 weekly meeting Oxford MONALISA 28 Tracking QD0 motion in Z

29. Wed 15 Jul 2009 ATF2 weekly meeting Oxford MONALISA 29 Tracking QD0 motion in X

30. Wed 15 Jul 2009 ATF2 weekly meeting Oxford MONALISA 30 Left-right QD0 mover tests

31. Wed 15 Jul 2009 ATF2 weekly meeting Oxford MONALISA 31 Left-right QD0 mover tests

32. Wed 15 Jul 2009 ATF2 weekly meeting Oxford MONALISA 32 Left-right QD0 mover tests DBS spring constant is small enough to let QD0 move freely

33. Wed 15 Jul 2009 ATF2 weekly meeting Oxford MONALISA 33 What to learn from this measurements? We are told that static tolerances for QD0: –100 μ m in x,y,z Our measurements show that even with the current pressure control system we meet this tolerance. The low spring constant of the DBS allows the QD0 mover to move the magnet unhindered. Dynamic tolerances: vertical:10 nm, (between Shintake andQD0) horizontal: 500 nm along beam: 10 μ m The question about dynamic motion and impact on the Shintake table will be answered in the next two talks.

34. Wed 15 Jul 2009 ATF2 weekly meeting Oxford MONALISA 34 Summary & Outlook MONALISA vacuum system worked well –Many thanks for the wonderful support we got! The next step is to do optics tests with the vacuum system in place to gain calibration constants. Our goal is to get first position measurements to the Shintake group late next spring.