Overview of Ring Construction�
Status and Schedule�
Contents:	  	
  Ring	  construc/on	
  status	  	
  Budget,	
  schedule	  and	  HR	
  Kazunori AKAI�KEK, Accelerator Laboratory�
Mar. 3, 2014, @19th KEKB Review�Upgrade to Belle II detector

Colliding bunches

New superconducting final
focusing magnets near the IPe+	
  3.6A	

KEKB	
  to	
  SuperKEKB	

Redesign the lattice to squeeze theemittance (replace short dipoles withlonger ones, increase wiggler cycles)

e-­‐	
  	
  2.6A	  	

Nano-­‐Beam	
  scheme	
  	
  extremely	
  small	
  βy*	  	
  low	
  emiFance	
  Beam	
  current	
  double	  " ± $ # *y ' I±*± y $ RL '
L=
& )
&1+ )
2ere % # *x ( + *y % Ry (Replace beam pipes with TiN-coatedbeam pipes with antechambers!

40	
  /mes	  higher	
  luminosity	
  2.1x1034	
  -­‐-­‐>	  8x1035	
  cm-­‐2s-­‐1	  Reinforce RF systems forhigher beam currents
Improve monitors and control system

Injector Linac upgradeUpgrade positron capture section
DR tunnel

Low emittanceRF electron gun

New e+ Damping Ring
K. AKAI, Overview of ring construction status and schedule, 19th KEKB Accelerator Review, Mar. 3, 2014, KEK�

2�SuperKEKB rings master schedule�
Calendar�

2011�

2010�

Japan	
  FY�

2010�

2013�

2012�
2012�

2011�

2014�

2015�

2014�

2013�

・・・�

2016�
2016�

2015�

now	
  here	KEKB	
  opera/on�

SuperKEKB-­‐MR(LER&HER)	
  construc:on�SuperKEKB	
  commissioning�

op/cs	  design�

phase	  1	  dismantling	
  KEKB�w/o	
  QCS	  w/o	
  Belle	  II�

fabrica/on	
  and	
  tests	
  of	
  MR	
  components�
TiN	
  coa/ng	
  &	
  baking	
  of	
  beam	  pipes�MR	
  buildings	
  construc/on�

ﬁnal	
  assembly,	
  RF	
  condi/oning�

reinforce	  electricity	
  and	
  cooling	
  facility�
fabricate	
  QCS-­‐L�
detector	
  upgrade	  to	
  Belle	
  II�

cool	
  down	  w/Belle	  II�reinforce	  RF,	
  vac,	
  etc.	
  for	
  higher	
  beam	  current	
  fabricate	
  QCS-­‐R�
roll	
  in	
  �

roll	
  out	  �

Belle	
  roll	  out�

op/cs	  design�

rota/on�
roll	
  in	
  �

phase	  3	  w/	
  full	  Belle	  II�
w/	  QCS	  w/	  Belle	  II	
  (no	
  VXD)�

DR	
  complete	
  before	
  phase	  2	
  �

install,	
  assembly	
  and	
  set	  up�cabling	
  and	
  piping�

phase	  2	  SuperKEKB-­‐DR	
  construc:on�VXD	
  install	
  �

fabrica/on	
  and	
  tests	
  of	
  DR	
  components�
install,	
  assembly	
  and	
  set	  up�DR	
  tunnel	  construc/on�
DR	
  buildings	
  construc/on�
electricity	
  and	
  cooling	
  system�
K. AKAI, Overview of ring construction status and schedule, 19th KEKB Accelerator Review, Mar. 3, 2014, KEK�

3�

Commissioning phases �•

Phase 1�––––No QCS, No Belle II solenoid�
Basic machine tuning�Low emittance tuning�Vacuum scrubbing �• Belle II people request enough vacuum scrubbing in this stage (before Belle II roll in).�
• At least one month at beam currents of 0.5˜1A /ring.�

– DR is not needed in this phase.�

•Phase 2�
–
–
–
–
–
–
–

•

with QCS and Belle II (w/o VXD)�
Low beta optics tuning�
Small x-y coupling optics tuning�Beam collision tuning�
Belle II background study�DR commissioning �
Target luminosity at this stage is 1 x 1034 cm-2s-1�

Phase 3�– Physics run�K. AKAI, Overview of ring construction status and schedule, 19th KEKB Accelerator Review, Mar. 3, 2014, KEK�4�

Ring Construction Status�

K. AKAI, Overview of ring construction status and schedule, 19th KEKB Accelerator Review, Mar. 3, 2014, KEK�5�

MR Magnet & Vacuum Status �Interaction Region� Magnets close to the IP in fabrication this FY.�
 Beam pipes for the IR (Phase 1) next FY� Installation of IR magnets and beam pipes
next FY.�
 Superconducting magnets under construction
for Phase 2.�

Tsukuba straight section�

 Most of magnets (except IR) installed. � Beam pipes in fabrication this FY.�
 Installation of beam pipes next FY.�Arc sections� LER new bending magnets installed.� Installation of most of other new
magnets to be done in this FY.�
 Beam pipes and bellows connection
to be completed in this FY.�
 24 sextupole magnets with tilting
table to be installed next FY.�Around the ring� Power cables, control cables ongoing.� Piping for cooling water ongoing.�
 Alignment on going.�
(these works continue in FY2014)�

Power supply buildings�

 Power supplies fabrication ongoing.�
 Cabling and piping.�
 Starting up power supplies.�
(these works continue in FY2014)�

Oho and Nikko straightsections� Wiggler magnets installed.� Beam pipes installed.�

Cooling facility reinforcement� Replacing cooling pipes in tunnel completed.� New buildings construction (2012-13).�
 Pumps and other equipments underconstruction: to be completed in Sep. 2014.�

Fuji straight section�

 Most of KEKB magnets and beam pipes are reused.� Beam pipes for injection, abort, crossing etc. are in
fabrication this FY. (some will be later)�
 Installation of these new beam pipes next FY.�K. AKAI, Overview of ring construction status and schedule, 19th KEKB Accelerator Review, Mar. 3, 2014, KEK�

6�

Beam pipes preparation�
•Fabrication�
– Most of MR vacuum components, such as beam pipes, pumps, bellows etc.,
required for Phase 1 were already ordered, and will be delivered in this fiscal year.�
• Tsukuba straight section, beam injection/abort sections, SR monitor sections, etc. were
finally ordered last year (in JFY2013).�
• Only beam collimator system is still remained. (to be ordered in April 2014)�

•Baking and TiN coating�Preprocessing	
  facility	
  at	
  Oho	
  exp.	
  hall	  – About 930 beam pipes already doneusing a facility in KEK site. �• Output: 10 ˜ 15 beam pipes per week�– Preprocessing work for the rest of
the beam pipes will start from thisspring.�• About 330 beam pipes shoule beprocessed, including the TiN coatingfor ˜140 beam pipes.�
• Mainly for Tsukuba and Fuji straightsection.�

K. AKAI, Overview of ring construction status and schedule, 19th KEKB Accelerator Review, Mar. 3, 2014, KEK�

7�

Beam pipes installation�
•Installation of beam pipes and bellows
has started in 2013.�
– About 830 beam pipes were already installed
for arc sections and wiggler sections,followed by the connection of bellows.�
– Some sections were already evacuated, andthe control system was checked.�
– Installation of the remained beam pipes(Tsukuba straight section, injection/abort,
SRM), and the following evacuation of thewhole ring will start from this summer, andthe MR vacuum system will be ready in thisyear.�

•Beam	
  pipes	
  installed	
  into	  arc	
  sec/on	Upgrade of monitoring and control
system are in progress.�
– Cabling and piping of cooling water havestarted.�

K. AKAI, Overview of ring construction status and schedule, 19th KEKB Accelerator Review, Mar. 3, 2014, KEK�8�

North tunnel�

LER Gate valve in West tunnel�

LER Oho wigger downstream�LER Nikko wigger downstream�

K. AKAI, Overview of ring construction status and schedule, 19th KEKB Accelerator Review, Mar. 3, 2014, KEK�

9�

Wiggler magnets and chambers�Installation of LER wiggler magnets and chambers in Nikko and Oho
straight sections. -> Completed.�

LER	
  Wiggler	LER	
  Wiggler	Nikko�

Oho�

Installation of HER wiggler magnets and chambers
in Oho straight section. -> Completed.�

HER	
  Wiggler	

K. AKAI, Overview of ring construction status and schedule, 19th KEKB Accelerator Review, Mar. 3, 2014, KEK�

10�

Til/ng	
  table	  for	
  sextupole	  magnets	
  Magnet	  modiﬁca/on	
  and	
  table	  produc/on	
  ongoing	
M. Masuzawa,�
R. Sugahawa�

16	
  tables	
  (of	  24)	
  arrived	
  at	
  KEK.	

Assembled	
  magnet:	
  Proto	
  type	16	
  magnets	
  (of	  24)	  been	  modiﬁed	
  and	
  arrived	
  at	
  KEK.	

Assembly	
  work	  using	
  survey	
  instruments	
  to	
  adjust	  the	
  /l/ng	
  center	
  will	  start	  some/me	  in	
  February.	
  Installa/on	
  to	
  the	
  beam	  line	  will	  take	
  place	
  in	
  JFY2014.	

K. AKAI, Overview of ring construction status and schedule, 19th KEKB Accelerator Review, Mar. 3, 2014, KEK�

11�

Piping, Cabling and Alignment�
These	
  works	
  are	
  also	
  laborious,	
  takes	  /me	
  and	  money.	
  	

SSC	
  in	
  HER	
Cooling	
  water	  pipes.	

He	
  pipe	Power	
  cables	  between	
  wiggler	
  magnets	
  been	  connected	
  in	
  
the	
  Oho	
  and	
  Nikko	
  straight	  sec/ons.	

Workers	
  adjus/ng	
  the	
  bolts,	
  in	
  between	
  the	  magnet	  and	  the	
  pipe,	  not	
  easily	
  seen.	

Nikko	
  wiggler	
  alignment	
  in	
  a	
  very	  /ght	  space	K. AKAI, Overview of ring construction status and schedule, 19th KEKB Accelerator Review, Mar. 3, 2014, KEK�

12�

Alignment	
  work	  ongoing	
  Diﬃcult	
  to	
  coexist	
  with	  the	
  heavy	  duty	  construc/on	
  work	  above	
  ground.	
  Eﬀects	
  of	
  the	  new	
  u/lity	
  buildings	
  and	  new	
  tunnel	  are	
  clearly	
  seen.	
AR	
  new	
  tunnel	

12M	
Oct. 13,2013�

AR	
  new	
  tunnel	Oct. 13,2013�

Dec. 10,2013�
lebel change
by 1.5 mm�

Fuji�
K. AKAI, Overview of ring construction status and schedule, 19th KEKB Accelerator Review, Mar. 3, 2014, KEK�

13�

Tsukuba straight section�

K. AKAI, Overview of ring construction status and schedule, 19th KEKB Accelerator Review, Mar. 3, 2014, KEK�

14�

IR	
  Magnet	  produc/on	
  status	
  (QK*	  and	
  BC*	
  and	
  etc.)	
  	Two	
  quadrupoles	
  M. Masuzawa et al.�	
  (QLC2LE/QLC2RE)	
  Coils	  have	  been	
  wound	  &	
  impregna/on	
  is	
  ongoing	~2.2m	
  Dipoles	
  All	
  coils	  have	  been	
  wound	Yoke	
  stacking	
  and	
  assembly	
  will	  start	  in	
  mid-­‐
February.	

All	
  16	
  (+1spare)	
  Skew	  Quads	  (QK*)	
  arrived	
  at	
  
KEK	
  and	  the	
  magne/c	  measurements	
  ongoing	  at	
  KEK.	

Small	
  dipole	
  magnets	
  near	  the	  QCS	  (BC1LP,BC1RP)	
  &	
  other	  dipole	  magnets	
  (BC*E)	
  and	
  etc.	
  	
  Yoke	  stacking	
  ongoing	  	

K. AKAI, Overview of ring construction status and schedule, 19th KEKB Accelerator Review, Mar. 3, 2014, KEK�15�IR status – magnets and beam pipes�
K. Kanazawa�

New IR magnets are fabricated in FY2013.
Installation of the new IR magnets will start June 2014.	
Beam pipes
fabrication
FY2013	

Dummy
Stage
(Phase 1)	

Movingstage	
Beam pipes fabrication: Apr – Sep 2014	

Beam pipes
fabrication
FY2013	

Installation of beam pipes will start around August 2014.	
K. AKAI, Overview of ring construction status and schedule, 19th KEKB Accelerator Review, Mar. 3, 2014, KEK�16�IR status – Accelerator floor�The accelerator floor
has been modified forthe new QCS moving
stages.
The QCSL moving
stage will be set on
the floor in FY2013.	

QCSL
moving stage	
QCSR
moving stage to be fabricated(dummy stage at Phase 1)	

Pictures by
H. Yamaoka	
K. AKAI, Overview of ring construction status and schedule, 19th KEKB Accelerator Review, Mar. 3, 2014, KEK�17�IR status – Radiation shield�
A mini-shield for Phase 1 is going to be fabricated in Feb - Jun 2014.
Installation of the mini shield and the shield support stage: ~Aug 2014	

K. Kanazawa�Phase 1IR	Mini shield for Phase 1	

Existing shield	

Shield support stage (re-use)	
 Additional shield to fill a floor gap (FY2013)	
K. AKAI, Overview of ring construction status and schedule, 19th KEKB Accelerator Review, Mar. 3, 2014, KEK�18�

IR Superconducting Magnet�
•Left side magnets and cryostats�– will be completed by Dec. 2014. (originalschedule was Dec. 2013.)�
– to be cold-tested in KEK before installation
in beam line.�

•Right side magnets and cryostats�––––

main magnets will be completed in March.�
collector coils windings at BNL started.�
cryostats will be completed in Jul. 2015.�
No time for cold-test before installation inbeam line.�
Details will be reported by Ohuchi-san.�

Corrector	  Coils	

QC1LP	  collaring	
  work	  at	
  Mitsubishi	  Company	

QC1LP	
  magnet	

Leak	
  Field	
  
work	
  in	
  
Cancel	  Collaring	
  Coils	

Mitsubishi	

QC1LE	
  correctors	
  coils	
  in	
  BNL	  at	
  November	
  2013	SC	
  coils	
  for	
  QC1RP	  

K. AKAI, Overview of ring construction status and schedule, 19th KEKB Accelerator Review, Mar. 3, 2014, KEK�

19�

OHO	

D4	
1	

C	

2	

B	

KEKB-­‐RF	
2	

A	

A	

B	

FUJI	

D7	

D5	
2	

1	

C	
 E	

E	

2	

2	

D	

C	

B	

A	

1	

2	

2	

A	

D10	

D8	
B	

C	

D	

E	

2	

NIKKO	
2	

2	

D	
 C	
 B	
 A	

D11	
2	

1	

A	
 B	
 C	
 D	
 E	
 F	

HER	
LER	

SuperKEKB-­‐RF	  	
  (phase	
  1)	

add	
  5	
  klystrons,	
  HP&LL	
  
add	
  3	
  power	  supplies	
OHO	
D5	
D4	
2	

2	

2	

H	
 G	
 F	
 E	

C	

2	

1	

A	
 B	
 C	
 D	
 E	
 F	

E	

2	

A	

2	

FUJI	

D7	
2	

D	

2	

C	

B	

A	

1	

2	

2	

A	

D10	

D8	
B	

C	

D	

E	

2	

NIKKO	

2	

D	
 C	
 B	
 A	

2	

D11	
2	

A	
 B	
 C	
 D	

add	
  2	
  ARES	convert	  to	
  LER	
Klystron,	
  HP&LLRF	
  system	2	

remove	  4	
  ARES	Type	  “A”	
  power	  supply	
  (for	  two	
  klystrons)	

ARES	
  cavity	

1	
status
Type	
  
“B”	
  schedule,
power	
  supply	
  
(for	
  
one	
  Accelerator
klystron)	
 Review, Mar. 3, 2014, KEK�K. AKAI, Overview of ring construction
and
19th
KEKB

SC	
  cavity	SC	
  crab	

20�

ARES	
  Cavity	  System	
  /	
  Input	
  Coupler	
  /	
  Performance	  Upgrade	Fine	
  grooving	
  inside	
  the	
  outer	
  conductor	
  of	
  the	
  coaxial	
  line	  to	
  suppress	  mul/pactoring	  	
  discharge.	

The	
  coupling	
  loop	
  is	
  extended	
  to	
  increase	  the	
  input	
  coupling	
  factor.	
  The	
  op/mum	
  input	
  coupling	
  factor	  βopt	  is	
  given	  by	  	
   βopt = 1 + Pbeam/Pc .	
  	
  	

Input	
  Coupler
	
  	
  	
  	
  	
  	
  Power	  Handling	
  Capability	
  (Spec.)	
  
	
  	
  	
  	
  	
  	
  	
  	
  	
  	
  	
  	
  	
  	
  	
  	
  	
  	
  	
  	
  	
  	
  	
  	
  	
  PinputPc
Pbeam	

SuperKEKB 	
  :	
  750	  kW	  =	  150	  kW	  +	
  600	  kW	  KEKB 	  
	  :	  350	  kW	  =	  150	  kW	  +	
  200	
  kW	
  
Pc	
  =	
  150	  kW	  genera/ng	
  Vc	
  =	
  0.5	  MV	  per	
  ARES	  cavity.	
  3D	
  Transparent	
  View	
  of	
  ARES	  Cavity	  System	

K. AKAI, Overview of ring construction status and schedule, 19th KEKB Accelerator Review, Mar. 3, 2014, KEK�21�

ARES	
  Cavity	  System	
  /	
  Input	
  Coupler	
  /	
  Produc@on	
  &	
  Processing	

Input	
  Coupler	
  	
  
used	
  as	
  
Output	  Coupler	

ARES	
  	
  
Storage	
  Cavity	

Input	
  Coupler	  	
  Under	
  Test	High	
  Power	  Test	  Stand	To	
  1MW	
  Water	
  Load	
  

•
•
•

RF	
  Power	
  from	
  
1MW	
  CW	
  Klystron	
  	
  (TOSHIBA	  E3786)	

Snapshot	
  of	
  Status	
  Monitor	
  for	  RF	  Processing	T. Kageyama et al.�Status	
  	
  &	
  	
  Plans	  So	
  far,	
  10	
  couplers	
  have	  been	  processed	
  up	
  to	
  750-­‐800	
  kW.	  By	
  the	
  end	  of	
  this	  April,	
  4	
  more	  couplers	
  are	
  going	
  to	
  be	
  processed.	
  In	
  2014,	
  10-­‐14	
  out	  of	
  30	
  couplers	
  exis/ng	
  in	
  the	  MR	  tunnel	
  will	  be	
  replaced	
  with	
  new	
  ones,	  and	  the	
  ARES	  cavi/es	
  will	  be	
  all	
  set	
  for	
  “ T	  =	  0”.	
  K. AKAI, Overview of ring construction status and schedule, 19th KEKB Accelerator Review, Mar. 3, 2014, KEK�22�

New LLRF control system�
••

A digital LLRF control system, which is dominated by μTCA-platformed FPGA boards, has beendeveloped for higher accuracy and flexibility, and many improvements were applied forSuperKEKB.�
Now the quantity production of 8 systems is in progress. Six of them will be installed in D5 in
March and two in D4 in June. �

LLRF Control System for SuperKEKB!

μTCA-Platform
Digital LLRF Unit!

FPGA Board (AMC)

16-bit ADC x 4ch,
16-bit DAC x 2ch

K. AKAI, Overview of ring construction status and schedule, 19th KEKB Accelerator Review, Mar. 3, 2014, KEK�23�New LLRF reference distribution�
Features!
•••Optical distribution by means of “Star” configuration from the central control room (CCR).�
“Phase Stabilized Optical Fiber (PSOF)”, which has small thermal coefficient, is adapted : < 1ppm/ C (5 ps/km// C)�
Furthermore, optical delay control of thermal drift compensation is applied at CCR for all transfer lines. �

Status!
•••Installation of the PSOF cables to all RF sections and Tsukuba-B3 was completed. �
Optical transceivers and the drift compensation system will be install in this month. �Connection into the electronics hut of the Belle-II and extension to the DR will be done this year (next JFY).�
T. Kobayashi et al.�

Short term stability (time jitter) : ~0.1 ps (rms)Long term stability (pk-pk) :±0.1° @508.9MHz = ±0.55 ps is expected by the optical delay control.
K. AKAI, Overview of ring construction status and schedule, 19th KEKB Accelerator Review, Mar. 3, 2014, KEK�24�

RF cavity for Damping Ring�•

DR Cavity #1 (1st Production
Version) has passed the HighPower Test (HPT)�
up to Vc=0.95MV/cav over theSpec.: 0.8MV/cav.�

•Mounting test has been performed
successfully with vacuum sealing. �Movable	  Tuner	
  T. Abe et al.�Vc	
  Wall-­‐loss	
  [MV/cav]	
 Power	  [kW]	

Total	
  Holding	
  
Time	
  
[hours]	

Number	  of	
  Trips	
  	
  

0.80	

144	

30.5	

1	

0.85	

164	

18	

0	

0.90	

186	

14.5	

3	

0.95	

210	

8	

1	

•

DR #2 cavity is in fabrication this FY. �Two	
  cavi/es	
  conﬁgura/on	
  in	
  DR	

K. AKAI, Overview of ring construction status and schedule, 19th KEKB Accelerator Review, Mar. 3, 2014, KEK�

25�

Beam Monitor System�
•Beam Position Monitors�

Button electrode�– All button electrodes have been fabricated and partly
installed in the tunnel.�
– A hundred twenty 508 MHz narrowband detectors will bedelivered by this March. �– Gated turn-by-turn detectors are being fabricated. 117
units will be available by phase 1 commissioning.�
– R&D of IP orbit feedback system is in progress. A downconverter for signal detection has completed. �•

508MHz narrowband detector�

Bunch-by-bunch Feedback System�– Transverse kickers, button electrodes, power cables andpower amplifiers have been installed.�
– LER longitudinal kickers have been ordered and will be
installed in August 2014.�
HER transverse kicker�

HER button electrode�

LER transverse kicker�

K. AKAI, Overview of ring construction status and schedule, 19th KEKB Accelerator Review, Mar. 3, 2014, KEK�

26�

Beam Monitor (cont'd)�
•Photon Monitors�– 1) Visible light monitors (horizontal and longitudinal size measurements)�
• Design of the mirror, the holder and the chamber have been finalized.�
• Fabrication of the mirrors and the holders will finish in this FY.�– 2) X-ray monitors (vertical size measurements)�
• Beam line design have been finalized.�
• Under fabrication are downstream section of beam line vacuum components, highefficiency pixel detectors and 64-channel readout system. �– 3) Large-Angle Beamstrahlung Monitor (collision size/position offsets monitor)�
• Design of the extraction chamber has been finalized.�
• Optics boxes, optical-transfer-line components and extraction mirrors are being
fabricated.�

Diamond mirror forvisible light monitors	

64-channel readout system
for x-ray monitors	

Optics box and extraction mirror
for LABM	

K. AKAI, Overview of ring construction status and schedule, 19th KEKB Accelerator Review, Mar. 3, 2014, KEK�

27�

Replacing	
  pipes	  around	  the	
  ring	  for	  reinforcing	  cooling	  system	
  -­‐>	
  completed	

K. AKAI, Overview of ring construction status and schedule, 19th KEKB Accelerator Review, Mar. 3, 2014, KEK�28�

New Damping Ring for positrons�
DR	
  tunnel	  construc/on	
Jun.	
  2012	

•••Fabrication of accelerator components ongoing.
Installation will start in FY2014.
DR commissioning will start in 2015. �e+	
  beam	Dec.	
  2012	

Mar.	
  2013	Completed	

Machine	  building	Power	
  supply	
  building	Parameter	

Value	

Energy	1.1	
  GeV	

Bunches	

2	
  x	
  2	

Circumf.	

135.5	  m	H.	
  damping	

10.87	
  ms	Ext.	
  emiFance	
  (H/V)	

42.5/3.15	
  nm	

Max.	
  current	

70.8	
  mA	

K. AKAI, Overview of ring construction status and schedule, 19th KEKB Accelerator Review, Mar. 3, 2014, KEK�

29�

Accelerator components for DR�
•Magnets �– Fabrication of most of magnets and power supplies have completed.�
– Field measurement is ongoing.�
– Fabrication of sextupole magnets, H-steering magnets, some of power supplies on
going in JFY2013. �•

Vacuum system�– Regular beam pipes of the ring were already fabricated.�
– Septum, SR monitor chambers, NEG and ion pumps will be ordered in JFY2014.�

•RF system�– #1 cavity has been high-power tested successfully.�
– #2 cavity fabrication ongoing in JFY2013.�
– Low-Level and High Power RF system to be constructed after buildings completed.�

•Monitors�
– Most hardware components are ready for installation (BPM, FB, SRM, etc.).�
– To be prepared in FY2014 are electronics for beam loss monitors, signal cables
and air-conditioned racks.�

•Injection system�– Kickers and power supplies will be ordered in JFY2014.�

•Control and timing system�
K. AKAI, Overview of ring construction status and schedule, 19th KEKB Accelerator Review, Mar. 3, 2014, KEK�30�

Budget, Schedule and HR�

K. AKAI, Overview of ring construction status and schedule, 19th KEKB Accelerator Review, Mar. 3, 2014, KEK�31�Budget�– Total construction budget is 314 Oku-Yen for Rings, Injector, and Belle-II.�
– Most of the budget comes year by year-based.�

JFY2010	

JFY2011	

JFY2012	
Opera@on	
  (+Maintenance)	
  budget	
KEKB	
  Opera@on	  	

JFY2013	

JFY2015	

JFY2016・・	
  Commissioning	
  start	Maintenance	
  budget	
  (~20	
  Oku-­‐Yen/year)	

Construc@on	
  budget	

JFY2014	

SuperKEKB	
  Opera@on	
  budget	
  	We	
  are	
  here	Very	
  Advanced	
  Research	
  SP	
  (100	
  Oku-­‐Yen)	
  	
Other	
  budgets	
  for	  construc@on	
  (214	
  Oku-­‐Yen)	
  	
Construc@on	
  budget	
JFY2010	

Unit: Oku-Yen (˜1.1M$)�

JFY2011	

JFY2012	

JFY2013	

JFY2014	

Total	VARSP�

75.0	

10.5	

14.5	

0	

0	

100.0	

Others�

0	

41.6	

40.2	

61.6	

46.7	

190.0	

Buildings�

0	

4.5	

12.4	

7.2	

0	

24.1	

75.0	

56.6	

67.1	

68.8	

46.7	

314.1	

Supplied	

Supplied	

Supplied	see,	
  next	  page	see,	
  next	  page	Total�
Status�

K. AKAI, Overview of ring construction status and schedule, 19th KEKB Accelerator Review, Mar. 3, 2014, KEK�32�

Budget situation in JFY2013-14�
Construction budget �
JFY2013�
Shisetsu-seibi-hi�
(facilities expense)�

Last	
  ARC	  in	
  Mar.	
  2013	

37.6	

appropriated�

24.5	

B project (construction) �

KEK burden, etc. �

JFY2014�

30.5	

Budget for buildings is not included.�

for rings, Linac and Belle-II�unit: Oku-yen (˜1.1M$)�

to be appropriated�

7.6	

appropriated as JFY2012 supplementary budget.�

6.6	

1.5	
not	
  appropriated	

probably	
  missing	(KEK budget is being reduced year by year.)�

KEK management promised to supply remaining KEK burden of 8.1 Oku-Yen.�
(6.1 Oku-Yen in FY2014 and 2.0 Oku-Yen in FY2015)�

Then,	
  planned	
  construc/on	
  budget	
  will	  be	
  fully	  supplied.	
  This	  is	
  good	  news,	
  but	
  ・・・ 	K. AKAI, Overview of ring construction status and schedule, 19th KEKB Accelerator Review, Mar. 3, 2014, KEK�33�Operation budget issue�
•Deep cut in JFY2014 operation budget�– Only 25.0 Oku-Yen was appropriated , much lower than 36.9 Oku-Yen that has
once been sent from MEXT in the request for budgetary appropriations.�

•The B project operation/maintenance budget during construction
period was 20.0 Oku-Yen/year. This is annually used for: �
–
–
–
–
–
–
–

•

Electricity charges for Linac operation, facility and infrastructure �
Operators for Linac, AR, BT, control, and refrigerator �Computor lease fee�
Radiation safety (subcontructing)�
Facility and infrastructure (subcontructing)�
Minimum maintenance of KEKB, Linac and Belle�
Minimum electricity charges during shut down of KEKB�In addition to the annual maintenance, 17 Oku-Yen was requested to
conduct beam operation from 2015 January to March. A part of thisis needed before beam operation starts:�
– Electricity charges for high power RF conditioning, magnet system adjustment
with high power operation, test operation of Nikko refrigerator and Belle solenoid,etc.�
– Additional cost for operators and varioius subcontructings.�
K. AKAI, Overview of ring construction status and schedule, 19th KEKB Accelerator Review, Mar. 3, 2014, KEK�

34�

Impact on schedule�
•The impact of the operation budget cut in JFY2014 on schedule: �– Unable to start beam operation in JFY2014 unless additional budget of at least 10
Oku-Yen that could be used for electricity charges comes. �– Test operation of the refrigerator and Belle solenoid could be done in this FY. Also
it is possible to start RF conditioning, magnet system adjustment with high power,
etc. �
– With this budget, possible situation at the end of JFY2014 would be that
construction is done and starting up of machine components started, but beam
operation is not started. �••

Effort is being made in high level people to recover the budget cut. �
Urgent needs: �– It takes 3 - 4 months to make contracts. Procedure for major contracts for
JFY2014 already started. This can be proceeded only within available budget. �•In case no budget recovery:�
– Possible plans to meet the reduced budget are being discussed in acceleratorgroup. An example will be shown next.�

K. AKAI, Overview of ring construction status and schedule, 19th KEKB Accelerator Review, Mar. 3, 2014, KEK�

35�

original schedule�

K. AKAI, Overview of ring construction status and schedule, 19th KEKB Accelerator Review, Mar. 3, 2014, KEK�

36�

A	
  possible	
  plan	  in	
  case	  no	
  recovery	
  of	
  budget.	

original schedule�

Plan A�K. AKAI, Overview of ring construction status and schedule, 19th KEKB Accelerator Review, Mar. 3, 2014, KEK�

Physics	
  Run	
  start	
  fastest	

37�

Human Resources (KEK staff)�
17th	
  ARC	  in	
  Feb.	
  2012	
Date	

Status	

Needed	  FTE	

Available	
  FTE	  	
  (permanent	
  staﬀ)	

Dec.	
  2010	  under	  construc/on	

77	

56	

Apr.	
  2011	  under	  construc/on	

77	

60	

Apr.	
  2012	

under	  construc/on	

77	

62	

Change	  in	
  two	
  years	  (2012	
  –	
  2014)	
New	
  
(FTE	
  
increase)	
Apr.	
  2012	

+3	

Jul.	
  2012	+2	

Apr.	
  2013	

+1	

Apr.	
  2014	

+2	

Total	
  change	

Re@re(1)	
   Re@re(2)	
  tenure	  to	
  Change	
  of	
  
(FTE	
  
(same	  FTE	  permanent	  FTE	decrease)	
 counted	
  here)	
 (same	  FTE	
  counted	  here)	
-­‐2	

2	

2	

Remarks	

+1	
 One	
  of	
  the	  new	
  staﬀ	
  came	
  from	  other	  project	
+2	

-­‐1	

3.5	

2	

+1	

3	

1	

+1	
+5	
 Slow,	
  but	
  steady	
  improvement	

K. AKAI, Overview of ring construction status and schedule, 19th KEKB Accelerator Review, Mar. 3, 2014, KEK�38�

Last ARC recommendation�
•There are number of components which must be systematicallychecked for their impact on the impedance budget. It is
recommended that a single person be assigned as the “impedance
police” responsible for checking and controlling every component
which has an impedance contribution to MR.�D.	
  Zhou	  "Impedance	
  issues"	
  to	
  be	
  presented	
  today	  	

K. AKAI, Overview of ring construction status and schedule, 19th KEKB Accelerator Review, Mar. 3, 2014, KEK�39�

Summary�•Construction is well ongoing.�
– We had various kinds of troubles (not reported here in detail), but they have beensolved or mitigated not to make significant schedule delay. �– As a whole, construction is on schedule so far to start Phase 1 commissioning in
2015.�

•A serious issue is operation budget cut in JFY2014.�
– We are considering possible plans to meet the situation.�

•

As for HR shortage, we had slow, but steady improvement sinceconstruction started in 2010.�

K. AKAI, Overview of ring construction status and schedule, 19th KEKB Accelerator Review, Mar. 3, 2014, KEK�

40�