Physics Program at KEK-Tsukuba

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Nov 24, 2013 (3 years and 8 months ago)

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Physics Program

at KEK
-
Tsukuba

October 21,
2010



Masa Yamauchi

IPNS, KEK

KEK, High Energy Accelerator


Research Organization

J
-
PARC

Tsukuba

Tokai

KEKB

Synch. light

facilities

ATF

Accelerators at KEK

n
e

n
m

n
t

Lepton CP

Asymmetry

Beyond Standard Physics

KEK
-
B

LHC

J
-
PARC

Power
-
Upgrade

[Origin of Force]

Higgs Particle

[Origin of Mass]

Quest for

Birth
-
Evolution

o
f Universe

Quest for Unifying

Matter and Force

Super
-
KEKB

International Linear Collider

䥌C


Quark CP
Asymmetry

[Origin of Matter]

Quest for 6 Quarks

Quest for Neutrinos

Scientific Activities

Technology Innovation

Encouraging Human Resources

KEKB and Belle

5

Major achievements at Belle

Evidence for direct CP

violation in B
g

K
+
p
-

Evidence for B
g

tn

Observation of b
g

d
g

Observation of B
g

K
(*)
ll



Decisive confirmation of

Kobayashi
-
Maskawa model

Belle collaboration

15
countries ~400
collaborators

Observation of CP

violation in B meson

system

Measurements of

CP violation in B
g

f
Ks,
h
’Ks etc.

Discovery

of X(3872)

Evidence for D
0

mixing

Observation of direct CP

violation in B
g

p
+
p
-

Anomalous CPV in
b

s

processes?

Theoretical calculations

using
V
ub
,
D
m
d
,
e
K

Direct

measurement

Anomaly in
B

K*ll
decay?

SM

Inconsistency in unitarity triangle?

Unexpectedly large
D
0
D
0

oscillation

Difference in CPV between
B
0

and

B
±

Suggest new physics contributing to
b

s

transition.

Suggest new physics contributing to
BB

(
DD
) transition.

Need x50 statistics to clarify new physics.

e
-

2.3
A

e
+

4.0
A

x

40 Gain in Luminosity


SuperKEKB

Colliding bunches

Damping ring

Low
emittance

gun

Positron source

New beam pipe

& bellows

Belle II

New IR

Replace long TRISTAN dipoles
with shorter ones (HER)

TiN
-
coated beam pipe with
antechambers

Redesign the HER arcs to
squeeze the
emittance


Add / modify RF systems
for higher beam current

New positron target /
capture section

New superconducting
/permanent final focusing
quads near the IP

Low
emittance

electrons
to inject

Low
emittance

positrons
to inject

J.W. Flanagan @ Belle PAC 2010.2.19

Design of main components
_5


Bellows and gate valves

with comb
-
type RF
-
shield


Sure RF shielding, thermally strong


applicable to ante
-
chamber scheme


Finger
-
type for some cases, if flexibility is required.


Trial models have been installed into the ring and
tested.


Reduction in the temperature of bellows has been
demonstrated.


Copper RF shield will be used even for


aluminum
-
alloy beam ducts.

2010/2/16

KEKB Review (KEK)

8

2010/2/17

Bellows chamber

RF
-
shield (gate valve)

Gate valve

Y.
Suetsugu

8

Belle Upgrade


New Dead time free

readout and

high speed

computing systems

ECL

Wave sampling + pure
CsI crystal(endcap
)

PID

Threshold Aerogel + TOF



TOP + Aerogel
-
RICH

SVD

4
-
lyr DSSD

6lyr DSSD

(option: striplet / pixel )

CDC

Super small cell

Longer lever arm

KL/
m

摥瑥捴楯n

RPC

Scintillator

+SiPM(endcap)

Better background tolerance

Better performance

2007.3.1

11



June 23, 1995 : Minister of
Monbusho
,
Kaoru
Yosano
, announced a contribution of

5 billion
-
yen

to help finance the construction of the LHC at the CERN Council meeting.

Japan was
the first non
-
member country who expressed the contribution to the LHC
project.

In total Japan contributed 13.85 billion
-
yen.


文部大臣


与謝野



CERN Director General

Chris Lewellyn Smith

達磨(片目!)

Delegation of Japan at CERN Council

Japanese contribution to LHC

Dhama

doll

Year 2008

2007.3.1

12

Near the interaction points, triplet
quadrupole magnets focus the beam.
Two types of superconducting
magnets are separately developed
and manufactured at KEK and
Fermilab. Both magnets were
assembled with common cryostat at
Fermilab and then shipped to CERN.

Fermilab

KEK

Collision point

Inner Triplet Quadrupoles

Very successful US
-
Japan collaboration
for the LHC construction!

Toward the LHC upgrade

Recently the design group for High
-
Luminosity LHC is formed.

KEK is contributing to the R&D for the two key technologies:



High
-
field magnet (Nb
3
Al) and



Crab cavity,

in close collaboration with CERN and the other labs

JLAB

CI/DL

CI/DL

KEK

KEK

BNL

SLAC

Nb
3
Al cable produced by
NIMS
-
KEK

collaboration.

Nb
3
Al has better performance then Nb
3
Sn

at the high stress condition

Various designs of crab cavity

ATLAS detector upgrade plan

2013

2014

2015

2016

2017

2018

2019

2020

2021

2022

High
-
Luminosity LHC



5x10
34

cm
-
2
s
-
1

u
ltimate design luminosity



1
-
2x10
34

cm
-
2
s
-
1

toward design luminosity


14TeV
-
1x10
34

cm
-
2
s
-
1

Phase 1 minor upgrade:




An additional pixel layer




Replacement of Inner
Endcap


muon chambers

Phase 2: Major upgrade:



Complete replacement



of the inner trackers



(All
-
silicon tracker)

R&D activities in Japan


R&D of radiation
-

tolerant sensors


Development of short
strip detector module


R&D of pixel sensors



development of muon
and combined triggers.

I
nternational
L
arge
D
etector Concept

Reconstruct events in terms of quarks, leptons, & gauge bosons

Thin and high resolution vertexing

P
article
F
low
A
nalysis

High resolution tracking

High granularity calorimetry

Everything incl. HCAL inside SOL (B>3T)

Main Physics/Detector R&D Areas
at KEK

TPC

VTX

W/Z separation by M
jet

CAL

PHY/OPT

MDI

PHY/OPT


Physics and detector optimization

VTX


F
ine
P
ixel
CCD

R&D

TPC


MPGD readout TPC R&D

MDI/MECH


Machine detector interface / Structure

ILD

15

LOI:


695 signatories


32 countries


148 institutions

LOI: validated by IDAG in Sep. 2009




Moving on to TDR phase

Needs one order of magnitude better
performance than existing collider detectors!

KEK
-
related Activities for ILD

TPC

Large Prototype (LP1)

Advanced Endplate R&D (just started!)

GEM panel R&D

3 GEM panels from LC
-
TPC
Asia Group

PCMAG from KEK

Thickness of TPC end plate < 15% X
0

Surface mount readout
electronics (incl. DAQ)

Power switching, power
delivery and cooling

Test Beam @ DESY

Endplate from Cornell

Readout electronics from
LUND and CERN

Point resolution seems to
meet

perform
ance goal


CAL

M
ulti
-
P
ixel
P
hoton
C
ounter

Novel
semiconductor
photo
-
sensor

developed with
Hamamatsu

Sensor R&D

1 3 6 12 16 25 32 GeV

Electron energy spectra

2
nd

prototype test @ Fermilab in Sep 2008

Prototype Tests


Tungsten
scintillator strip
sandwich CAL

CMB Telescopes

QUIET (phase I)

P
OLAR
B
EA
R

CMB

mirrors in the

shield box

DAQ

Receiver system

polarimeter chip

Receiver system

Detector Technology Project (DTP)

ATLAS

12GeVPS

TRISTAN

Pixel technology

2D gas detector

New photon detector

Liquid TPC

Cryogenic detector

DAQ


ASIC


Mechatronics


Cryogenics

HEP and NP communities

IMSS

Material Science

community



KEKDTP #5

Qpix project


Future alternative to
TimePix


Functional pixels,


each equipped with


an independent TDC,


ADC and
ToT
.


Collaboration with


the experts in the


industrial applications.



Physics program at KEK
-
Tsukuba:


KEKB


SuperKEKB

upgrade


x40 in luminosity to study NP in B, D,
t

decays


Dismantling of machine and detector has started as well
as construction of new machine/detector components.


Energy frontier program


LHC/ATLAS and their upgrade


ILD at ILC


CMB measurement at QUIET and
PolarBear


Detector Technology Project provides unique
opportunity to make new measurements possible.

K
-
K

mixing

Charm quark

CP violation in
K

system

Bottom quark and
t

lepton

B
-
B

mixing

Top quark

CP violation in
B

system

New physics, SUSY??

Discoveries in flavor physics

Discoveries in energy frontier

??