Main	  Ring	  Magnet	  system	
Power	  supply	  design	  Magnet	  design	  &	  Field	  measurements	  	  	   Tes;ng	  Tuning	  Installa;on	  Installa;on	  &	  Cabling	  Survey	  &	  alignment	  	  	   	   	   	  T.	  Adachi	   	  	  	  K.	  Egawa	  	   	   	   	  T.	  Oki	  	  H.Iinuma	  	  	   	   	   	  T.	  Sueno	  	  M.	  Masuzawa	  	   	   	   	  N.	  Tokuda	  	  Y.	  Ohsawa	  	  	  	  	  	  	  	  	  	  	  	  	  	  	  	  	  	  	  T.	  Kawamoto	  Re;red	  but	  s;ll	  ac;ve	  	  R.	  Sugahara	  	  K.	  Tsuchiya	
Magnet	  Review	  2013	

Contents	
Since 2012 Review
Progress
Magnet installation
SurveyProblems
Grease contamination
OthersR&D
FY2013
Schedule
Magnet	  Review	  2013	

Since 2012 Review
Progress
Magnet installation
SurveyProblems
Grease contamination
OthersR&D
FY2013
Schedule
Magnet	  Review	  2013	

(1)LER	  arc	  dipoles	  (100)	  installed	  &	  preliminary	  alignment	  done.	  
LER	  ver;cal	  dipole	  correctors(~140)	  installed	  and	  aligned.	  

(3)Totally	  new	  HER/LER	  Surveyed	  and	  marked	  on	  the	  ﬂoor.	

(2)Oho/Nikko	  sec;ons	  LER	  wigglers	  (280)	  	  HER	  wigglers(36)	  installed	  &	  preliminary	  alignment	  done.	  

Magnet	  Review	  2013	
Main activities in the tunnel FY2012	

(1)LER arc dipoles (100) installed & preliminary alignment done.
LER vertical dipole correctors(~140) installed and aligned.

Magnet	  Review	  2013	

(1)LER arc dipoles (100) installed & preliminary alignment done.
LER vertical dipole correctors(~140) installed and aligned.

From the storage area to the access building.	
From the ground level to the tunnel floor. 	
Mounting on the air palette.	

Magnet	  Review	  2013	

(1)LER arc dipoles (100) installed & preliminary alignment done.
LER vertical dipole correctors(~140) installed and aligned.
50 of them were installed overthe existing HER dipole magnets.	

6m	

4m	

Review	  2013	
There is no overhead Magnet	  cranein the arc sections.	

(1)LER arc dipoles (100) installed & preliminary alignment done.
LER vertical dipole correctors(~140) installed and aligned.

LER	  wider	  ver;cal	  orrector	
Magnet	  Rceview	  2013	

112	  half	  hope	  (newly	  fabricated)	  56	  single	  pole	  (newly	  fabricated)	  112	  double	  pole	  (KEKB	  reused)	(2)Oho/Nikko sections : LER wigglers (280) HER wigglers(36)installed & preliminary alignment almost done.
36	  (KEKB	  reused)	

Magnet	  Review	  2013	

(2)Oho/Nikko sections : LER wigglers (280) HER wigglers(36)installed & preliminary alignment almost done.

New LER vacuum
Chambers being installed.	

LER new wiggler layout	

Magnet	  Review	  2013	

Oho sections: LER beam line is closer to the aisle.	

(2)Oho/Nikko sections : LER wigglers (280) HER wigglers(36)installed & preliminary alignment almost done.

Some	  LER	  wigglers	  right	  next	  to	  the	  relocated	  ARES	  in	  HER.	

Wigglers	  in	  both	  HER	  &	  LER	  Magnet	  Review	  2013	

(2)Oho/Nikko sections : LER wigglers (280) HER wigglers(36)installed & preliminary alignment almost done.
LER	  wigglers	  over	  HER	  superconduc;ng	  cavi;es	  @	  Nikko	  straight	  sec;on.	

Magnet	  Review	  2013	

(2)Oho/Nikko sections : LER wigglers (280) HER wigglers(36)installed & preliminary alignment almost done.

Not	  much	  space	  at	  all	  between	  LER	  and	  He	  gas	  supply	  lines	  for	  SCC.	
Not	  much	  space	  at	  all	  between	  LER	  and	  SCC,	  	  either.	
Magnet	  Review	  2013	

(2)Oho/Nikko sections : LER wigglers (280) HER wigglers(36)installed & preliminary alignment almost done.

Waiting for some more wigglers for the field measurements to be completed.
Magnet	  Review	  2013	 time this week.
The last batch will be installed & alignedsome(3)Totally	  new	  HER/LER	  :	  Surveyed	  and	  marked	  on	  the	  ﬂoor.	

Team	  A	Team	  B	IP	  points	  obtained	  by	  2	  survey	  teams	  agree	  within	  0.1	  mm	Magnet	  Review	  2013	

(3)Totally	  new	  HER/LER	  :	  Surveyed	  and	  marked	  on	  the	  ﬂoor.	

Magnet	  Review	  2013	

(3)Totally	  new	  HER/LER	  :	  Surveyed	  and	  marked	  on	  the	  ﬂoor.	

Magnet	  Review	  2013	

(3)Totally	  new	  HER/LER	  :	  Surveyed	  and	  marked	  on	  the	  ﬂoor.	

Magnet	  Review	  2013	

(3)Totally	  new	  HER/LER	  :	  Surveyed	  and	  marked	  on	  the	  ﬂoor.	

Magnet	  Review	  2013	

(3)Totally	  new	  HER/LER	  :	  Surveyed	  and	  marked	  on	  the	  ﬂoor.	
BELLE	  rolled	  in.	

Magnet	  Review	  2013	

Base plates for the magnets mostly done. Magnet installation will start from May.	

Since 2012 Review
Progress
Magnet installation
SurveyProblems
Grease contamination
OthersR&D
FY2013
Schedule
Magnet	  Review	  2013	Tunnel	  Level	  Survey	
Tsukuba	South	  part	  of	  the	  KEKB	  ring	  con;nues	  to	  sink	  w.r.t.	  to	  IP	Oho	Nikko	Fuji	

The spikes werecreated by the Mar.11thearthquake.	

Discussion with the Optics GroupA decision not to flatten out the tunnel level but to smooth it out,
Magnet	  Review	  2013	
based on the 2012 data (blueline)
was made.	

Tunnel	  Level	  Survey	

Feb. 2011
Mar. 2011	

An example of the spike from the earthquake. #59 sank by about 4 mm
and does not seem like it will recover naturally.
Magnet	  Review	  2013	
Also it seems like #62 and up sanksignificantly
due to the earthquake.	

Survey	Deforma;on	  monitor	  by	  GPS	The new surface surveying
network is now working 24 hours
a day, 7 days a week.
By H. Iinuma
Who is on maternity/childcare
leave now but expected tocome back from April.

Geospa;al	  Informa;on	  Authority	  of	  Japan	  (GSI)	  Well	  known	  ﬁxed	  point	Purposes of this project:*To compare with the tunnel(under ground) survey network results bylaser tracker.
*To detect any geological crustal
deformation by comparing other GPSpoints in Japan or/and GPS points across
Magnet	  Review	  the2013	
Pacific.

Surface	  network	  by	  7	  (+1)	  GPS	  	• Seven GPS antennas aremounted on the roofs of theaccess buildings to theSuperKEKB main ring.
• This system has beenworking since Aug. 2012.
• We also have one GPS
antenna to mount on theroof of bldg-3 for periodic
checkup.	

Magnet	  Review	  2013	

Stability of the slope distances:~1 mm stability over 400 m ~ 900 m (ppm!)
has been accomplished.
(Position accuracy:
horizontal<3mm, vertical <6mm from theLeica specification sheet).

Aug.2012	
La'tude	  (N)	Longitude	  (E)	Ellipsoidal	  height	  (m)	Ave.	  Slope	  distance	  (m)	3C	36̊	  09’	  12.93512”	

140̊	  04’	  36.50100”	  	78.0146	

0	6C	

36̊	  09’	  01.87511”	

140̊	  04’	  14.16083”	  	77.6748	

654.2805	  6SM3	36̊	  09’	  02.56042”	

140̊	  04’	  26.55720”	  	73.6924	

405.0502	  9C	36̊	  09’	  20.13805”	

140̊	  04’	  00.35192”	  	78.0247	

930.4865	  9SM5	36̊	  09’	  12.02100”	

140̊	  04’	  00.04799”	  	74.5330	

911.6635	  12C	

36̊	  09’	  31.33356”	

140̊	  04’	  22.86369”	  	75.0584	

661.6656	  12SM7	

36̊	  09’	  31.56883”	

140̊	  04’	  12.85894”	  	74.5791	

824.0912	  Magnet	  Review	  2013	

2 mm	place	Since 2012 Review
Progress
Magnet installation
SurveyProblems
Grease contamination
OthersR&D
We	  think	  it	  is	  important,	  useful	  and	  informa;ve	  to	  FY2013
share	  our	  experience	  here.	  	
Schedule
Magnet	  Review	  2013	

Grease	  contamina;on	  in	  the	  cooling	  water	  system	  (Sigma	  Phi	  wigglers	  &quadrupoles)	  Quadrupole magnet	

Magnet	  Review	  2013	

Green grease
Found at connections
between the coil andthe hose.

Grease	  contamina;on	  in	  the	  cooling	  water	  system	  (Sigma	  Phi	  wigglers	  &quadrupoles)	  Green grease is used forthe reference base plates.
Probably the same grease foundat connections.

Magnet	  Review	  2013	

Turned out that
Igol Machine oil
was used.	

Grease used in the “pure” cooling water system!	
Igol	  oil	  (green)	  A	  shocking	  amount	  of	  grease	  found	  inside	  of	  the	  ﬂow-­‐switches.	

Igol	  oil	  (green)	  Found	  at	  pipe	  sleeves	
Igol	  oil	  (green)	  Found	  at	  pipe	  sleeves	Private communication with CERN magnet group“We would not permit the use of grease or oil for the assembly of cooling
Magnet	  Review	  2013	
systems.”

Grease	  contamina;on	  in	  the	  cooling	  water	  system	  (Sigma	  Phi	  wigglers	  &quadrupoles)	  Hoses, connecting parts being washed using special solvent.
Insides of the hoses were examined using optical scope
before and after washing.
Extra work has been created by this problem.	
Magnet	  Review	  2013	

Other	  problems	  Lamination peeled off from the core (BINP steering magnets)
BINP sent people to KEK to examine this case & found 2 out of 220 weredefective. We will replace them with spares.	

Magnet	  Review	  2013	

Other	  problems	  Gap in lamination in the Sigma Phi
wiggler. Not critical but unprofessional.	
Magnet	  Review	  2013	

Since 2012 Review
Progress
Magnet installation
SurveyProblems
Grease contamination
OthersR&D
FY2013
Schedule
Magnet	  Review	  2013	

R&D

Tilting support	

Til;ng	  support,	  which	  can	  ;lt	  a	  sextupole	  magnet	  by	  ±30	  degrees,	  has	  to	  ﬁt	  here.	  

Tilted by 30 degree	

Needs 24 sets	

These have to be moved somewhere else.
Review	  2013	
The KEKB sextupole magnets need toMagnet	  be modified.	

R&D work by
R. Sugahara	R&D

Auxiliary winding to create skew quadruple field	
skew-Q configuration�

300	   	  	  	  0	  300	   300	  300	   300	  	  	  	  0	  -­‐300	  	  	  	  0	  Test winding in the tunnel.
Winding can be done without removing the top part of the magnet, less work in the tunnel.	

Using flat cable (12 cables/layer, 4 layers/pole⇒48 turns/pole)by K. Tsuchiya.
The flat cables will be sent to KEK by the end of March.	
Magnet	  Review	  2013	

Since 2012 Review
Progress
Magnet installation
SurveyProblems
Grease contamination
OthersR&D
FY2013
Schedule
Magnet	  Review	  2013	

FY2013	  schedule	
•Magnet installation to the Tsukuba section.
•~60 dipoles, ~100 quadrupoles, ~80 steering magnets•More magnet fabrication ⇒ presented by K. Egawa•Top part of the LER magnets in the arc sections to be removed for vacuumchamber installation (and put the magnets back together again).
~500 magnets.
•LER horizontal steering magnet installation (~200).
•HER vertical/horizontal steering magnet installation (~400).
•Connecting each magnet to the cooling water system (entire ring)•Survey and alignment (precise) of the all magnets in the tunnel.
⇒Alignment accuracy depends on the tunnel temperature. Right now, it is
not controlled at all and the temperature varies by ~9 degree between winterand summer…
•Tunnel level makers (~200) will be adjusted to the new SuperKEKB level.
•Tilting support for 24 sextupole magnets will be fabricated.
•24 KEKB sextupole magnets will be modified to fit in the tilting support.
•Skew winding will be done for all the sextupole magnets (~200).
•Power supply work ⇒ presented by T. Oki.
•And more.
Magnet	  Review	  2013	

Magnet	  Review	  2013