1. Status of ATF/ATF2 and machine schedule in this fall Impact of the earthquake Recovery status, alignment Schedule in this fall N. Terunuma, KEK

2. Power line recovery Rough Alignment (LINAC) RF Blackout ½ power Vacuum ATF2 Shield Cooling Water (BT) (DR) Summer Shutdown Test Beam KEK Requested Standby at Home Power Distri- bution ATF Shield Radiation Safety

3. Impact of the earthquake on ATF Photo: 2011/March/11 15:55

4. Main Power Lines Recovered in April

5. ATF LINAC QM2L table was backed to the original. Chambers were exchanged. QD10L bellows was exchanged. All were repaired in March!

6. ATF LINAC Klystrons Repaired in April.

7. Beam Transport Fallen Pb blocks were cleared. Ceramic of the CT monitor and a bellows were exchanged. Repaired in April.

8. Damping Ring Repaired in April/May

9. ATF2 beam line Repositioning Dust on the IP-BSM Optics Dust on the FD mover Magnet Mover Outside of ATF2 end 10 cm slide

10. ATF2 FD/IP shield works: re-positioning Big work! 3 weeks

11. ATF2 FD-IP area Recovered in May

12. Checkout of Electricity and Water in May DR magnet PW station, 6.6kV Cooling Water pipes

13. A test beam passes all beamline 2011/5/25 Injector 2011/5/26 LINAC 5/31 DR 1 st turn Single bunch, 0.78 Hz, 0.3 x 10 10 e/bunch DR&ATF2 5/27 BT end 6/2 DR storage 6/2 MS1X 6/3 MS1FF 6/3 MS2FF 6/3 MSPIP 2011/06/03 N.Terunuma

14. Stored beam in DR (x10 10 e/bunch) A stored beam was delivered to the dump of ATF2. No critical damage on the accelerator was found. 6/1 6/3 6/8 6/106/13 6/17 6/24 6/30 0.5x10 10 1.0x10 10 3 trains XSR ready Compton 2-mirror FONT 3 trains Cavity BPMs FFTB mover HAPS Freq. Adjust V-emittance (XSR) ~30pm DR rough alignment for checkout was continued in daytime. Inspection of the radiation safety

15. Welcome back from oversea 17 persons May - August

16. Alignment of the beamline - continued work -

17. Status of Alignment All in the ATF building was shaken (10 cm or more?) by Great East Japan Earthquake. Linac/BT Lift up the downstream section close to the BT/DR level. It will reduce the workload of DR tuning. DR ¾ of DR has been re-aligned. East arc will be done in this week. Expanded North-South about 1.5 mm  Rematch the optics ATF2: Just surveyed. Waiting the alignment work in October.

18. Alignment: LINAC/BT level comments Measured after earthquake Re-aligned LINAC Table Re-aligned Cavity LINAC’s drop to end and jump to BT had been known since the DR startup. It might be caused by the DR construction after LINAC alignment. It brought a troublesome tuning to us. We corrected these by using a power-recovering long shutdown after the earthquake. BT was re-aligned but plots were not yet prepared.

19. DR displacement (Enlarged image) after earthquake Rough alignment in May 1.5 mm wider(N-S) than the original design. When?? New design was defined as wider but same circumference.

20. Alignment: DR level aligned in June, aligned in summer Vertical (mm) -0.5 0.0 0.5 NorthWest ArcSouth East Arc is under realignment. Target: |x|< 90 um

21. Alignment: DR Horizontal (mm) -0.5 0.0 1.0 0.5 Longitudinal (mm) -0.5 0.0 1.0 0.5 aligned in summer Othersaligned in May NorthWest Arc South East Arc is under realignment. Target: |x|< 90 um

22. Waiting for alignment: ATF2 Floor of ATF2 sank about 1.5 mm. Level of the EXT-ATF2 magnets EXT FF Vertical (mm) QD0 mover is OFF QF1 mover is ON FFTB movers are “zero” position. Target: +-0.1 mm 0.0 -2.0 -3.0

23. ATF2 Q- magnet Setup Concrete Base Stand (KEK) FFTB mover (SLAC) QBPM (Cavity BPM) (KEK,PAL) Q magnet (KEK,SLAC,IHEP) QBPM electronics (SLAC) (2008/6)

24. Waiting for alignment: ATF2 Horizontal EXT FF Target: +-0.1 mm 0.0 -2.0 -3.0 0.0 -2.0 -3.0 -4.0 1.0 (mm) Longitudinal EXT FF Datum on floor We are checking the definition of the datum on the floor used at the ATF2 construction. Offset?

25. Waiting for alignment: ATF2 Roll of magnets (mrad) 1.0 - 1.0 0 EXT Target: +-0.1 mrad Pitch (mrad) 1.0 - 1.0 FF

26. DR Checkout of beam instruments EXT-FF Low emittance, Compton and Others ATF R&D ATF2 R&D Alignment DR survey ATF2 &TB meeting Recovery of 10 pm (DR) Recovery of 300 nm Goal-1 and others extraction survey

27. New IP-BPM installation at IP Low emittance, Compton and Others Goal-1? and others Goal-2? and others Summer Shutdown GDE meeting? JPS meeting

28. Additional slides

29. Alignment: DR After earthquake, aligned in June, aligned in summer - 2.0 mm +2.0 mm HorizontalLongitudinal all B Q Sx - 2.0 mm +2.0 mm

30. Hardware updates 1/? Pol e+ Compton: Upgrade of the 2-mirror system to 4-mirror system is underway. (Hiroshima, KEK) Old 2-mirror system in DR was replaced with a dummy chamber in August. New 4-mirror system is under testing beside the beamline. Installation will be done in the maintenance week after the full checkout of the optical system. It will be in October or later.