Status of Belle II Construction

Toru Iijima Nagoya University

KEKB Steering Committee Meeting

2015.06.09

Today’s Report

•  Recent Highlights in B Physics•  Physics run in Phase II•  Integration Plan

•  Status of BEAST II•  Status of sub-detector construction

– CDC

–  SVD– TOP

2  

Recent Highlights in B Physics

3  

More than 140 participants !Many young researchers !

New interesting results !

FPCP2015 (Flavor Physics & CP Violation)May 25-29 @ Nagoya University

•  Anomalies in b → s l l data–  P5’ in B → K* µ µ

–  Br (Bs → φ µ µ) –  Lepton non-universality ?

Recent Highlights in B Physics

4  

3.7 σ dev. from SM

3.5 σ dev. from SM

RK ⌘ �(B+ ! K+µ+µ�)

�(B+ ! K+e+e�)= 0.745+0.090

�0.074(stat)± 0.036(syst)

RK ⌘ �(B+ ! K+µ+µ�)

�(B+ ! K+e+e�)= 0.745+0.090

�0.074(stat)± 0.036(syst)

2.6 σ

•  Anomalies in b → s l l data–  P5’ in B → K* µ µ

–  Br (Bs → φ µ µ) –  Lepton non-universality ?

•  Enhanced Br(B→D(*) τ ν) rate

Recent Highlights in B Physics

5  

R(D) =�(B ! D⌧⌫)

�(B ! D`⌫)R(D

⇤ )=

�(B

!D

⇤ ⌧⌫)

�(B

!D

⇤ `⌫)

BaBar

Belle

LHCb

SM

3.7 σ (R. Watanabe)

•  Anomalies in b → s l l data–  P5’ in B → K* µ µ

–  Br (Bs → φ µ µ) –  Lepton non-universality ?

•  Enhanced Br(B→D(*) τ ν) rate

•  Bs → µ µ and Bd → µ µ

Recent Highlights in B Physics

6  

2.3 σ

LHCb + CMS

•  Anomalies in b → s l l data–  P5’ in B → K* µ µ

–  Br (Bs → φ µ µ) –  Lepton non-universality ?

•  Enhanced Br(B→D(*) τ ν) rate

•  Bs → µ µ and Bd → µ µ

•  Tension between exclusive – inclusive determination for |Vxb|

Recent Highlights in B Physics

7  

Right-handed current ?

New |Vub| by LHCb using Λb → p µ ν !

•  Anomalies in b → s l l data–  P5’ in B → K* µ µ

–  Br (Bs → φ µ µ) –  Lepton non-universality ?

•  Enhanced Br(B→D(*) τ ν) rate

•  Bs → µ µ and Bd → µ µ

•  Tension between exclusive – inclusive determination for |Vxb|

•  Belle-BaBar combined analysis for B0→DCP

(*)h0

Recent Highlights in B Physics

8  

Hints of New Physics ! Right-handed current ?

New |Vub| by LHCb using Λb → p µ ν !

Important Message

Belle II and LHCb are competing experiments,

NOT complementary experiments.

Any further delay severely impact the project ! 9  

(Not in the same unit)

We do want physics even in Phase II !

10  

We do want physics even in Phase II !

11  

Phase II Physics Task Force (Bryan Fulsom (PNNL) et al.)n  Determine physics possibilities for Phase II runningn  Sensitivity and feasibility studiesn  Expected 100 – 200 fb-1 in 150 days n  Possible topics

l  Y(3S) spectroscopy and rare decay studies l  Single photon searches l  Y(3S) scan to measure Γee l  Search for Y(nD) by scanningl  Scan/running above Y(4S)

Belle II Integration Near-Term Schedule

I. Adachi et al.

12  

Belle II Integration Near-Term Schedule

I. Adachi et al.

13  

Belle II Integration Near-Term Schedule

I. Adachi et al.

14  

BEAST II (Commissioning Detector)

Sven  Vahsen  (Hawaii)  et  al.   15  

BEAST  II  Commissioning  Detector

•  During Phase 1 and 2 a commissioning detector will be used to measure beam backgrounds.

16  

•  Phase 1 uses– 4 micro TPCs in 8 positions

to measure fast neutrons– PIN diodes to measure

ionising particle backgrounds

– Every other PIN diode caoted in gold paint to allow for separation of charged particle and X-ray contributions.

– Crystals and slow neutron counters will alo be used.

Phase 1: BEAST Detectors

17  

sensor   contact  person   number   Loca/on   DAQ   Measures  

PIN  Diodes   D.    Cinabro   64   decided   BEAST   X-­‐ray  &  total    ionizing  dose  

Beam  abort:    diamonds,  final  

prototype  L.  Vitale   4   decided*   Standalone**   Total  ionizing  dose  

Micro-­‐TPCs   S.  Vahsen   2-­‐4   decided     BEAST  

Fast  neutron  rate  and  recoil  spectrum  

(=direc[onal  info.)  

He-­‐3  tubes   S.  De  Jong   4   decided   BEAST   Thermal  neutron  rate  

BGO   J.  “Terry”  Liau   8   decided   BEAST   EM  par[cles  /  dose  

CsI  Crystals  (pure  and  Tl  doped),  LySO  crystals  

A.  Beaulieu,  R.  de  Sangro   6  pure,  6  

doped   decided   BEAST   EM  par[cles  

The  above  detectors  have  their  own  “BEAST  DAQ”  system.  No  Belle-­‐II  DAQ  in  phase  1.    

(New  request  /  discussion  about  adding  “CLAWS”  fast  scin/lla/on  detectors    also  in  phase  1)  

BEAST II: Integration Sequence

18  

IP1  chamber  for  Phase  1.

1.   4.  

5.  

Install  IP  bridge:  Completed   Install  BEAST  support  structure  and  sensors  

Add  IP  shield  wall  w/  crane  

2.   Install  cables  (not  shown)  to    below  bridge  

3.   Install  beam  pipe  

Phase I Targets

19  

n  Critical: ensure it is “safe” to roll-in Belle and VXD Beast Setup–  Measure x-ray and total particle dose at 64 positions with PIN diode system. –  Ensure no large, unexpected background components.–  Test Diamond sensor VXD beam abort system.–  Esatablish Real time feedback of background levels near IP from BEAST DAQ

to accelerator and collimator control operators, via EPICS, at ~1 Hz

n  Desired, though not critical: first attempt at comparing beam background MC and measurements

–  Comparison of Touschek and Beam-gas MC with measurements –  ECL background using 6 pure CsI & 6 CsI(Tl) crystals in ECL location.–  Injection BG measurement with pure CsI.–  First measurements of total dose, x-rays dose, fast neutron flux, thermal

neutron flux, versus phi & z•  w/ PINs, TPCs, He-3 tubes. •  Allows first comparison against beam background MC

BEAST Phase 1 : Milestones

•  ~ June 10 ship phase 1 cables to KEK (or handcarry to B2GM) •  ~ June 10 ship phase 1 support structure to KEK •  June 20-21 BEAST MiniWorkshop, KEK, Japan

•  June 22-26 B2GM, KEK, Japan

•  June 27-28 Install cables, fibers, and gas lines

•  July -- ? ship phase 1 detector to KEK

•  August 17-29 Install support structure, install sensors, get DAQ running•  Sep. 24 - Oct. 15 Concrete  block  work  (extension  of  2m-­‐thick  wall)  •  Nov. – Dec. Gate shield and wall shield work

•  January ’16 Ready for beams (expected ~Feb)

20  

CDC : First Cosmic Rays !

•  Cosmic ray events taken by 2 FE’s –  16 cells in φ

–  6 layers in r

21  

Belle II SVD

22  

•  4  Layers  double  sided  silicon  strip  detectors  •  2,3,4  or  5  sensors  per  ladder  

Ladders  

End  rings  

Carbon  fiber  (CF)  cone   End  flange  

PXD  (inside  SVD  à  individual  sub-­‐detector)  

Outer  CF  shell  

Beam  pipe  

SVD ladders

23  

L6  Ladder

L5  Ladder

L4  Ladder

L3  Ladder

FWD  module

BWD  module

Origami  +z  

Origami  ce

Origami  -­‐z BWD

FWD

Cooling  pipe

Cooling  pipe

Cooling  pipe BWD  module

FWD  module

Melbourne

TIFR

HEPHY Vienna

Kavil IPMU

SVD  Status  

•  All sites are becoming ready for the start of the ladder production–  The first electrically working ladder assembled on March 23–  The last site ( Melbourne ) will be qualified this Friday

•  PA0–  The availability of PA0s drives the ladder assembly schedule

–  While the crack issue seems to be solved, we experience a new problem: glue on the top layer pads

–  It is likely that this problem can be solved by introducing a wiping step

–  If wiping is successful, the batch 0 schedule is delayed by ~1 month

24  

C. Schwanda

SVD  Overall  Schedule

25  

Full site qualifications in May 2015

Start of ladder mount

April 2016

SVD ready for integration

February 2017

March  23:  First  electrically  working  (class  B)  ladder  completed  (L5.903)  

26  

…and  performs  as  expected  

27  

Our  design  is  demonstrated  to  work  electrically  with  all  sensors  switched  on  simultaneously  (  BPAC  request  ).  

April  14:  Melbourne  completes  their  first  class  C  ladder  

28  

All  sites  (Pisa,  TIFR,  Vienna,  IPMU  and  Melbourne)  have  now  demonstrated  they  can  assemble  ladders  with  final  components  sa[sfying  mechanical  specifica[ons.  

PA0+origami test production ( batch 0 )

•  12 + 12 PA0s were delivered by Taiyo on Feb-27 ( 12 PA0s needed for batch 0 )

– Electric test at Daiei completed on Mar-16 à ~75% of the PA0s are electrically working

– Optical inspection at IPMU revealed no cracks

•  But, we observe glue spread on the top layer pads– The glue on the pads affects the bondability of the PAs

•  Actions decided in the PA taskforce– Put the batch 0 on hold before the SMD and reflow step– Glue 4 PA0 ( not used for batch 0 ) on 4 origami sheets,

do the wiping and confirm the bondability ( at HEPHY and IPMU )

29  

PA0  on  the  Origami  hybrid

124.3mm

Pad# 97-98 (starting from 1) Observed by the laser microscope at KEK

•  Electrical test/pad distance/visual inspection for cracks are OK

•  Final steps of batch0 assembly ( including APV25 glueing) will resume on June 10.

TOP : Resuming Module Production

•  The module assembly resumed in mid. March after extensive studies on the delamination issues observed at the prism-bar joint of Module 01. –  Unable to reproduce delamination failure

in test samples.–  Better understanding of straia (narrower

gap reduce/eliminate this phenomena)–  Better understanding for use of acetone

to clean residual glues.–  Much improved glue control (new tape

and process)–  Discussion with vendors, experts

30  

31 TOP : Module production in progress

Module02  op[cs

Module02  assembly

Module02  roll  out

Module03  QBB  prepara[on

Module04  assembly

32 TOP  :  Module  Produc[on  Schedule

•  Module05 has started. Bar QA completed on May 29.•  Production is going smoothly as planed.

–  Should consider the way to speed up.

•  Production of optics (bars, prisms) are on track.–  Bars delivered up to module13.–  Prisms delivered up to module 10.–  Mirrors are done.

33 Bar Production at Zygo

Bar  Number   Serial  Number   Done  at  Zygo   Arrived  at  KEK   Used  in  Module  #  

1   SN-­‐1   09/26/2013   10/28/2013   05  

2   SN-­‐2   03/05/2014   03/25/2014   04  

3   449176  (SN-­‐3)   05/15/2014   06/19/2014   03  

4   449651  (SN-­‐4)   05/15/2014   06/19/2014   04  

5   449177  (SN-­‐5)   06/19/2014   07/06/2014   03  

6   450478   12/10/2014   12/24/2014   05  

7   450481   11/26/2014   12/24/2014  

8   450479   12/19/2014   01/12/2015  

9   450480   12/18/2014   01/12/2015  

10   450680   03/15/2015   03/29/2015  

11   450681   03/19/2015   03/29/2015  

12   450683   05/07/2015   06/01/2015  

13   450685   05/14/2015   06/01/2015  

14   450686   05/28/2015  

15   450688   06/02/2015  

34 Prism Production at Zygo

Prism  Number   Serial  Number   Done  at  Zygo   Arrived  at  UC   Used  in  Module  #  

1   449006   12/16/2013   12/18/2013   01  

2   449008   12/16/2013   12/18/2013   03  

3   449009   11/20/2013   12/09/2014   02  

4   449010   12/04/2014   12/09/2014   04  

5   450932   12/05/2014   12/17/2014  

rejected   450933   12/05/2014   rejected   rejected  

6   450935   03/23/2015   03/25/2015  

7   450937   03/23/2015   03/25/2015   05  

8   450936   03/26/2015   04/03/2015  

9   450941   03/26/2015   04/03/2015  

10   450939   03/28/2015   04/04/2015  

11   450938   05/04/2015   05/18/2015  

35 TOP : Readout Status

•  SCROD Rev. B2 design in fabrication.•  Carrier Rev. E2 mass assembly started.•  Firmware development for Module01 operation in Fuji.

•  Production test systems:–  Hawaii : Picosecond laser test –  Pittsburgh : SCROD–  South Carolina : Carrier

36

END

Backup 37  

38  

Apr  3:  Mee[ng  with  Taiyo  engineers  •  The  residual  on  the  pads  is  ‘carbonized’  glue,  produced  by  laser  cuqng  of  the  top  and  borom  PA0  layers  

•  During  hot  pressing  (gluing  of  the  two  layers),  this  glue  accumulates  on  the  top  layer  

•  It  can  be  removed  with  an  ‘eraser  liquid’  even  aser  the  PA0  are  glued  on  origami  (  ‘wiping’  )  

39  

Changes:  -­‐  Add  Ta  flanges  -­‐  Add  Cu  flanges  -­‐  Update  pipes  @  |z|=50cm    -­‐  Ta  à  Cu  -­‐  Thickness:  5mmà  7mm(BPM  part)  or  

2mm  (bellows  part)  -­‐  Add  SVD  endplates  

OLD

NEW

Cu  flange

Ta  flange

BPM Bellows

Horizontal  view Ver[cal  views

r14994

r16102

Geometry  updates

TOP  PMT  rates •  Input  files:    

–  RBB:  same  for  11th  campaign  and  new  geometry  –  Touschek/Coulomb:  updated  

11th  campaign(1000us) New  geometry(500us)

Tara  Natut  (JSI)

~20%  decrease  

Z-­‐distribu[on  of  gamma  origin Gamma(BAR)  origin

11th  campaign

New  geometry

Tara  Natut  (JSI)

RBB  only

Gamma  origin

11th  campaign New  geometry RBB  only RBB  only

Tara  Natut  (JSI)

Belle  II  TOP  Construc[on  Schedule 44