Belle II Construction andSchedule
Ichiro Adachi!

KEK2015.Feb.23

The 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

1Physics Motivation

The 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

2SuperKEKB Project : Motivation• Many good reasons to investigate an underlying theory beyond
the SM (“New Physics”).

• Origin of flavor structure• Naturalness• Dark matter & dark energy• Baryon asymmetry in Universe•…
However, it has not yet been discovered.
Ultimate Precision
Quantum Effect
Many Measurements

SuperKEKB
is the unique laboratory to isolate newsignals from SM predictions.
The 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

3SuperKEKB Project : Motivation• Many good reasons to investigate an underlying theory beyond
the SM (“New Physics”).

• Origin of flavor structure• Naturalness• Dark matter & dark energy• Baryon asymmetry in Universe•…
However, it has not yet been discovered.
If new finding at energy frontier experiments (LHC)SuperKEKB
is the place to get deep understanding innew physics with ultimate precisions.
The 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

4SuperKEKB Project : Motivation• Many good reasons to investigate an underlying theory beyond
the SM (“New Physics”).

• Origin of flavor structure• Naturalness• Dark matter & dark energy• Baryon asymmetry in Universe•…
However, it has not yet been discovered.
If no new finding at LHCSuperKEKB
is the only alternative to explore newphysics with ultimate precisions.
The 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

5SuperKEKB Project : Motivation• Many good reasons to investigate an underlying theory beyond
the SM (“New Physics”).

• Origin of flavor structure• Naturalness• Dark matter & dark energy• Baryon asymmetry in Universe•…
However, it has not yet been discovered.
If new finding at LHC

If no new finding at LHCSuperKEKB
is essential to open up new window
for new physics independent of LHC
program.
The 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

6

Physics of Our Interests• New CP violating phase“penguin mode”“reference mode”

ΔS = sin2φ1(B→φKs) - sin2φ1(B→J/ΨKs)
ΔS≃0 at SM

Non zero value indicates a signfrom NP, and precise measurementsallow us to distinguish NP models.

The 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

7

Physics of Our Interests• Charged Higgs
Annihilation process of B→τνBr(B→τν) = (1.14±0.27)×10-4 from PDG2014↔ Br(B→τν) = (0.73±0.21)×10-4 from SM prediction-1

Effect from charged Higgs can contribute to excess of BF.
B→D(*)τν as well…
discovery region at 50ab-1

CH
Lf03b

LH

C

100fb

Belle, 2008

-1

Only place to investigate b-H±-u/b-H±-c couplings
The 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

8

Belle II Theory interfacePlatform (B2TiP)
Coherent interactions between theorists andexperimentalists to study physics impact from Belle II
are now organized in a systematic way.

Working groups have been set up.
The 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

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Belle II Detector

The 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

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Belle II Detector
KL(and(muon(detector:(Resis:ve(Plate(Counter((barrel)(New
Scin:llator(+(WLSF(+(MPPC((endDcaps)

EM(Calorimeter:( NewCsI(Tl),(waveform(sampling((barrel)(Pure(CsI(+(waveform(sampling((endDcaps)(

Par:cle(Iden:ﬁca:on(( NewTimeDofDPropaga:on(counter((barrel)(Prox.(focusing(Aerogel(RICH((fwd)(

electron(((7GeV)
Beryllium(beam(pipe(2cm(diameter(NewVertex(Detector(2(layers(DEPFET(+(4(layers(DSSD(positron((4GeV)

Central(DriP(Chamber(He(50%):C2H6(50%),(Small(cells,(long(lever(arm,((fast(electronics(NewThe 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

11Belle II Detector
KL(and(muon(detector:(Resis:ve(Plate(Counter((barrel)(New
Scin:llator(+(WLSF(+(MPPC((endDcaps)

EM(Calorimeter:( NewCsI(Tl),(waveform(sampling((barrel)(Pure(CsI(+(waveform(sampling((endDcaps)(

Par:cle(Iden:ﬁca:on(( NewTimeDofDPropaga:on(counter((barrel)(Prox.(focusing(Aerogel(RICH((fwd)(

electron(((7GeV)
Beryllium(beam(pipe(2cm(diameter(NewCope with 10-20
times higher beam
related backgroundpositron((4GeV)
Radiation damage

Vertex(Detector(2(layers(DEPFET(+(4(layers(DSSD(Central(DriP(Chamber(He(50%):C2H6(50%),(Small(cells,(long(lever(arm,((fast(electronics(NewThe 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

12Belle II Detector
KL(and(muon(detector:(Resis:ve(Plate(Counter((barrel)(New
Scin:llator(+(WLSF(+(MPPC((endDcaps)

EM(Calorimeter:( NewCsI(Tl),(waveform(sampling((barrel)(Pure(CsI(+(waveform(sampling((endDcaps)(

Par:cle(Iden:ﬁca:on(( NewTimeDofDPropaga:on(counter((barrel)(Prox.(focusing(Aerogel(RICH((fwd)(

electron(((7GeV)
Beryllium(beam(pipe(2cm(diameter(NewCope with
10-20
Bettertimes
higher beam
performance
relatedbackgroundWider
coveragepositron((4GeV)
Radiation
damageLowermaterialbudgetVertex(Detector(2(layers(DEPFET(+(4(layers(DSSD(Central(DriP(Chamber(He(50%):C2H6(50%),(Small(cells,(long(lever(arm,((fast(electronics(NewThe 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

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Highlights of Detector
Construction 2014-2015

The 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

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Important Progress !!!
New Flags at Exp. Hall !!!

The 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

15

KL Muon Detector
End-cap KLM installation completed
in 2014 July.
Barrel KLM already done in 2013.

EM Calorimeter
Turn on new 2MHz waveform
electronics + new trigger boards.
Cosmic signal !
φDA!
nogniognoit
Nice work by both of subargetni
detector and DAQ groups
QcosmicECLθThe 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

16

Particle Identification Devices
Barrel : Time-of-Propagation (TOP) counter

MCP-PMT+expansion block

quartz radiatorEnd-cap : Ring Imaging Cherenkov counter
with Aerogel radiator (ARICH)
Test Beam setup
Two layer aerogel
radiator

AerogelHamamatsu-HAPDQ.E.-~33%-(recent-good-ones)

The 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

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Time-of-Propagation(TOP) CounterAll optical elements glued together
mirrortwo quartz barsprism

Optics into honeycomb box
Critical path for Belle II
1st module produced.

The 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

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Time-of-Propagation(TOP) Counter
Glue joint failure between quartz bar and prism.
Dedicated glue tests in progress…
Will resume module production inMarch.

MCP-PMT mounting
All production procedures
have been examined in detail.
The 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

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Aerogel RICH

Photon sensor (Hybrid avalanchephoto-detector) delivery

More than 80 % procured.

Average quantum
efficiency ~30%
Aerogel radiator test set-up
The 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

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Central Drift Chamber (CDC)• Hardware work almost completed.

• Wire stringing done in 2014 January.
• Gas leak check, tension measurements etc.
• Cabling
HV cabling

The 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

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Central Drift Chamber (CDC)• Moved to Fuji Hall to Tsukuba Hall in 2015 January.
• DAQ test is about to start.
• Mass-production of FE successfully completed.

The 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

Mt. Tsukuba22

Silicon Vertex Detector (SVD)
Outer CF shell

Carbon fiber(CF) cone

End flange

End ringsLadders

4 strip layers (L3 - L6)

PXD(inside SVD ! individual sub-detector)

Beam pipe

Pitch Adaptor 0 : flexible circuits toguide signals from DSSD to APV25“Micro-cracks” found in last autumn. Task
force was formed to solve this problem. Now
improving by updating production method.
The 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

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Silicon Vertex Detector (SVD)
Carbon fiber(CF) cone

Outer CF shell
End flange
New design PA0 sample.

End rings
Ladders

4 strip layers (L3 - L6)

PXD(inside SVD ! individual sub-detector)

Beam pipe

Pitch Adaptor 0 : flexible circuits toGone signals!
guidefrom DSSD to APV25“Micro-cracks” found in last autumn. Task
force was formed to solve this problem. Now
improvingby updatingproduction
Improved
sampleavailablemethod.
this spring.
The 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

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Silicon Vertex Detector (SVD)Ladder production is a one of critical paths.
Getting ready to start SVD ladder production
5 sites of IPMU/Pisa/
TIFR/Melbourne/HEPHY
engaged in this work.

The 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

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Pixel Detector (PXD)
2 DEPFET layers located at theinnermost position at R=14mm(cf. 18mm at Belle)
DEPFET sensor production going smoothly.
3 phases at metalization (2 Al, 1 Cu)“pilot run” underway

1st Al : OK
The 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

2nd Al : on-going26

Slow ControlSharing infowith
KEKB rmation/comgroumu n ip ar ecatio
es s enntial.

The 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

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Slow Control

We have alr
with
KEKB eady sta
rtedcontr
discu
ol exssion
pertss.

The 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

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Slow Control

NSM (Network SharedMemory) was a basis at Belle.

CSS (Control System Studio) can be a solution.

Communication with
SuperKEKB EPICS
The 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

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Installations & Commissioning
CalendarYear2015TOP2016

2017

All modules installed

2018

VXD(=SVD+PXD)

CDC
ARICH

Phase-3

FWD/BWD Endcap
Global Cosmic Ray Run
Commissioning
detector (Beast2)
Talk by H. Nakayama

Phase-2

Roll-in
QCS

Phase-1
The 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

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Belle II Summary• Belle II detector construction is getting into full swing.
• Tight schedule for TOP module assembly/SVD ladderproduction.

!

• Belle II except for VXD will get ready by mid of 2016
for phase-2.
• All TOP modules will be installed.
• Roll-in to the beam line is scheduled at the end of2016.
!

• Physics run with full detector starts from 2018.
!

• For run operations, discussions with SuperKEKB group
have already started and progress of slow control is ingood shape.

The 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

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Competition with LHCb
Our physics targets are mostly complementary.
LHCb scheduleslide at 2014 Rencontres du Vietnam

However, it has not yet been discovered.
New triggers etc will be available…

Higher energy (7→14TeV) in Run2

LHCb will accumulate >5 fb-1
of data in Run2 (2015-2017).

Belle II physics run

They will be ahead of us in 2018.

The 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

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Competition with LHCb
We can do very good jobs in competing modes !!

Belleφ3(γ) prospect

Belle IILHCb

φ3(γ) is one of the UT CP phases.

The 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

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Competition with LHCb
We can do very good jobs in competing modes !!

Belle IILHCb

High sensitivity to NP.
The 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

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Competition with LHCb
We can do very good jobs in competing modes !!
Aggressive commissioning and quickluminosity increase are key factors.
Remark from Belle II Technical Coordinator

We are not only hoping for aggressivecommissioning and rapid luminosity
increase, but we will be extremely
supportive to make it (協力を惜しまない).

Let’s work hard together !
!

ともにがんばりましょう！
The 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

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The 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

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The 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

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SVD schedule overview

SVD origami re-production•••

Batch 0 delivered by end of April ! for class B ladders & 1st class A
Batch 1 in August 2015 ! for class A ladders
Origami re-production completed by December 2015

The 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

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Silicon Vertex Detector (SVD)
Ladder Production Sites

IPMU/Pisa/TIFR/Melbourne/HEPHYInternal review organized.

4 sites have been alreadyqualified up to class-C.
Expected to gear up productions.

The 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

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Physics'Reach'of'Belle'II'and''the'LHCb'upgrade'

The 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

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The 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

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Integrated luminosity(/fb)

Data sets comparison

This slope is very important !

The 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

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First Physics at Phase-2

No vertexing, but tracking(CDC), PID, and calorimetry are working.

The 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

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Luminosity Projection
Integrated luminosity(ab-1)

50/ab around 2024

Goal of Be!e II/SuperKEKB"

Peak luminosity(cm-2s-1)

9 months/year
20 days/month

Commissioning starts
in early 2015.
Shutdownfor upgrade

Calendar YearThe 20th KEKB Accelerator Review Committee, 2015 Feb. 23-25

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Commissioning Scenario
Bistro “SuperKEKB”
Menu du Jour
Amuse-Bouche(Phase-1)
Commissioning detector (Beast2)
No QCSeeeeeee

Hors D’œuvre(Phase-2)
Belle II w/o VXD
Beast2 phase2
with QCSeee

Main(Phase-3)
Physics run with full detector

The 20th KEKB Accelerator Review Committee, 2015 Feb. 23-2545