Japan Proton Accelerator Research Complex J-PARC - Nuclear and Particle Physics Facility -

December 1, 2005 Shin'ya Sawada @ Hadron Structure at J-PARC

1

Japan Proton Accelerator Research Complex J-PARC

- Nuclear and Particle Physics Facility -

Shin’ya SawadaKEK

(High Energy Accelerator Research Organization, Japan)


2

Accelerator Configuration

Cascaded Accelerator Complex:

Linac

3GeV Rapid Cycling (25Hz) Synchrotron

50GeV Synchrotron

Materials and Life Science Facility

Hadron Hall (Slow Extracted Beams)

Neutrino Beamline to Super-Kamiokande


3

J-PARC:

J-PARC aims for the high intensity frontier for – materials/life sciences (3GeV),

and – nuclear/particle physics (50GeV)

High intensity proton beam leads to high intensity secondary (neutron, meson, …) beam. – The power (= Energy x Current)

is a good measure. Neutron: from 0.16MW (ISIS) to

1MW K meson: 5 to 10 times more

intense than existing BNL-AGS.

the High Intensity Frontier


4

Phase 1 & 2

The budget for about 2/3 of the entire project has been approved by the Japanese government from JFY2001 as Phase 1.

Phase 1 (~151 billion Yen) consists of major accelerator components and a part of experimental facilities.


5

Construction Schedule & Commissioning (Phase-1)

Linac

3 GeV

50 GeV

Materials + Life

Nuclear-Particle

Neutrino (plan)

Others

Salt Farms

Bldg. construction

Equip. constructionBeamtest

Bldg. constructionEquip. construction

Beamtest

Bldg. constructionEquip. construction

Beamtest

Bldg. construction


Bldg. construction


Bldg. construction


Construction

Archelogical studies

Construction Schedule (as of Oct., 2003)

FY2001 FY2002 FY2003 FY2004 FY2005 FY2006 FY2007 FY2008

BeamConstruction Start

study report


6

Scenes of Construction


7

Performance of the 50-GeV PS

Beam Energy ： 50 ＧｅＶ(30GeV for Slow Beam)(40GeV for Fast Beam)

Repetition: 3.4 ~ 5-6s Flat Top Width ： 0.7 ~ 2-3s Beam Intensity: 3.3x1014ppp, 15A

(2×1014ppp, 9A) ELinac = 400MeV (180MeV)

Beam Power: 750kW (270kW)

Numbers in parentheses are ones for the Phase 1.


8

Scenes of Construction

50 GeV Area


9

Neutrino Facility- Fast Extracted Beam -


10

T2K (Tokai-to-Kamioka) Neutrino Experiment

Status of oscillation and neutrino mass:– Atmospheric experiments

(SK…) discovered neutrino oscillation and thus finite masses of neutrinos.

– K2K disappearance experiment confirmed the existence of the neutrino oscillation with “man-made” neutrinos.

Motivations of T2K (Tokai to Kamioka): Precise measurement of disappearance to x. Discovery of e appearance: High flux of enables us to observe it.

– Flux () at the 50 GeV PS > 100 x Flux () at KEK 12 GeV PS Future upgrade … towards CP violation in the lepton sector

~1GeV beam(100 of K2K)

J-PARC0.75MW 50GeV PS

Super-K: 50 ktonWater Cherenkov

Phase2:4 MW ?

Phase2:Hyper-K?


11

Neutrino Facility

サスペンション型

(20t x 2)クレーン

ニュートリノ・ビームライン

FQ1

ビーム振り下げ 34.0

32. 8 19

. 2

9.7

ロス・ポイント( 250W)最大で

PH3PV2

PQ5PQ4

PV1 PD21.92 deg. bend

PQ3

PQ1PQ2A

1.9 2 d eg. ben dPD1 PH2 PH1

R104433.5

R107700R106400R100400R99600

PC1PC2PC3

PC4

引き出し基準点x=49615028.58, y=69561283.94

ニュートリノ標的

アーク中心x=49650.877m, y=69450.356

DEサブトンネル

Dサブトンネル

7550

アラインメント用穴Ｔ１

アラインメント用穴Ｔ２

6363.4

FV1 179.92°

FH1

FVD

2FQ

4FV

D1

FQ3

FH2

FVD

2FQ

2

1397

8.6

6164.5

1418

6.5

8571

17000

, ( )遮蔽扉気密扉気密は地上開口部で取ってもよい

1630

0

20800

1180

0

20800

5300

21x5.5=115.5m2

21x12=252m2

21x16.5=346.5m2

25800

7000

34x16=544m2

15800

3380

0

20t 2クレーン基

inward beam extraction proton line with SC combined- function magnets variable off-axis angle between 2-3 degrees 130m long decay section a near detector at 280 m another detector planned at 2km


12

Osc. Prob.=sin2(1.27m2L/E)

m2=3x10-3eV2

L=295km■ WBB (=0) with an intentionally misaligned beam line from the detector axis ==> Quasi monochromatic beam with higher Intensity than NBB os

c.m

ax.

E

Off-axis Beam

Target Decay Pipe

Super-K.Horn

OA3°

OA0°OA2°

OA2.5°

flux

@ S

K<= On axis


13

Hadron Physics Facility- Slow Extracted Beam -


14

Slow Extraction Beamline (Phase 1)

NP-HALL56m(L)×60m(W)

50-GeV PS

T1 Target

30% LossBeam Dump

750kW

Switch Yard A-Line

T0 Target

0.5% Loss

Split Point

2% Loss


15

Hadron Hall

December 1, 2005 16

T1 Target R&D (by Yamanoi)

Beam

Ttarget disk5.4cm Thick50cm Diam.

Cooling water

~18m

~10m

Beam

2mWaterpump

C:\Documents and Settings\sawadas\My Documents\JHF\Talks\SeoulJul2005\T1-5?????.mpg


17

Water Pipe (SUS)8.4 Sv/h2.4 Sv/h

5m

T1 Vessel2.2 Sv/h850 mSv/h Collimator

380 mSv/h100 mSv/h

Beam

Concrete7.9 Sv/h0.03 Sv/h

Collimator710 mSv/h420 mSv/h

q1B110 mSv/h49 mSv/h

Iron Base560 mSv/h210 mSv/h

Service Space

Trench

30Days Operation/1Day Cooling1Year Operation/Half Year Cooling

D1530 mSv/h270 mSv/h

Q162 mSv/h33 mSv/h

T1 Target650 Sv/h230 Sv/h

Vacuum DuctSUS 3.2 Sv/h 1.2 Sv/hTi 1.1 Sv/h 97 mSv/h

Vacuum Seal30 Sv/h11 Sv/h

Residual DoseConcrete5.3 mSv/h1.6 Sv/h

Iron60 Sv/h11 Sv/hIron

430 Sv/h160 Sv/h

Iron1.1 mSv/h460 mSv/h

Iron170 mSv/h460 mSv/h


18

Upstream of Secondary Beam Lines

Magnets → Upstream Collimator Beam Ducts → Big Vacuum Chamber instead of Ducts

How to solve 200kW Heat Problem?

Ni target (10kW)

D1(7.2kW) Q1(<1kW)

Beam

K1.8

Cu collimator(76kW)

2.4mDump

Vacuum Chamber

Cu collimator(55kW)

2.9m K1.1 KL


19

Big Vacuum ChamberService Space Vacuum

Chamber

5m

Collimator

Magnet

Iron Block

Concrete Block

Beam

T1 Target

•Shield blocks are also inside the vacuum chamber.•Each magnet/collimator has module structure unified with shield blocks.•Chamber lid is at the service space level.•Electric power and cooling water are provided from the service space.


20

5050mm

Phase 2 Phase 3

Phase 1

Beam Dump: Traveling to 50m downstream for Phase 2

• 1000ton （ Full Weight including Core, Shield, Cooling---)

• Traveling should be completed within 1 day (eight hours)

beambeam


21

BeamDump

• 750kW Heat/Radiation Load

• Movable!Proton Proton beambeam

Service Service spacespace

CuCuFeFe

ConcreConcretete

9.5m9.5m

6m6m99mm

（背面（背面図）図）

（正面（正面図）図）


22

Heat analysis by MARS & ANSYS (calculated by A. TOYODA & M. MINAKAWA)

Proton beam

Cu:6900

mm

Fe:1050

mm3000mm

ビーム入口Φ350mm

Tmax:202℃

熱伝達係数：1000W/m2 ・ K

6300mm

1000mm

• 無酸素銅– ρ=8.9[g/cm3]– 熱伝導率 390 [W/m/K]

Proton beam50GeV-15A

(750kW)


23

Maintenance

Maintenance Maintenance SpaceSpace

Pillow Pillow SealSeal

Ex. Ex. DuctDuct

Water Water ManifoldManifold

Vacuum

Exhaust


24

Structure of traveling devices

Complete remote operation with just LAN Cable!

beambeam電源・油圧ユニット


25

K1.8 and K1.8BR

ES1

ES2

MS2MS1

IF-window

TG-window

FF

SKS+SPES-II


26

K1.1/0.8 Beam Line (S-Type) and KL

MS2

MS1

IF

FF

T1

ES1

ES2

C-Type

December 1, 2005 27

Beamline Parameters

K1.8 K1.8BR K1.1 (S-Type)

Max. Mom. ~2 GeV/c 1.2 GeV/c 1.1 GeV/c

Length 45.853 m 17.573 m 27.05 m

Acceptance 1.4 msr.% 2.5 msr.% 4.1msr.% \

Intensity(ppp)#

K- (×106) K- (×106) K- (×106) K+ (×106)50GeV15A 30GeV9A 50GeV15A 30GeV9A 50GeV15

A30GeV9A 50-15 30-9

1.8 GeV/c 6.6 1.4

1.1 GeV/c 0.38 0.08 5.5 1.2 9.1 2.0 81 11

0.8 GeV/c 1.0 0.2 1.7 0.4 18 2.5

0.6 GeV/c 0.2 0.05 2.6 0.4

DC-Separator

750kV/10cm6m×2

500kV/10cm 6m

750kV/10cm 2m×2

K/$ 8 (1.8GeV/c) 6.9 7.5 (1.1GeV/c) 6.8 4.3(1.1GeV/c) 4.7

X/Ysize @ FF 19.8/3.2 mm(FWHM) 5.9/2.9 mm(FWHM) 10/6 mm(FWHM)

\ MS1 opening: ±1mm, MS2: ±2mm# using Sanford-Wang formula, assuming 1pulse=3.53s （ 0.7s flat top) $ Cloud are not taken into account.


28

Construction Schedule:

Magnets etc. at NP-Hall ： 2007(H19)

2004(H16)

2003 (H15)

2005 (H17)

2006(H18)

KH:2006(H18)

Magnets etc. at ＳＹ：2006(H18)

:2008(H20)

The first Beam to NP-Hall ： 2008(H20) -Beam ：2009(H21)

SY:2005(H17)


29

Dates of Remember

• April 2005: We can start recycling magnets!– January 2005 : K2K shut down– December 2005 : KEK-PS shut down. The most of Hadron Hall construction team should take care of external beam lines of the KEK-PS until then.

• March 2006: We can start SY settings & The most magnets should be ready until then!• March 2007: We can start Hadron Hall settings.• Jan. 2008 (Nov. 2007?): Start of 50GeV-PS commissioning! • Sept. 2008: The construction should be completed (officially) &

The First External Beam!


30

Recycling of ν-line Magnets


31

Plan View

3.75°Bend -3.75°Bend

50-GeV BM (Proto-type)

7040

QFP inVEP

q01 q02 h03 h05

v04

q03 q04 q05h01

v02

Magnet Recycling in the Matching Section

18D72(SLAC)

v06

6D220,QC1,QC2(K2K/TRISTAN)

4C220(KEK-EP2)


32

Magnet Collection ProjectThe Latest Contribution for High-p Beamline

18D72 Magnet from FNAL/ANL

~4Tm, 150mm Gap,

40mm Pole Width


33

Summary

Neutrino Facility– Fast extracted beamline.– Expect first beam in 2009.

Hadron Facility– Slow extracted beamline.– Expect first bean in 2008.– At the day-1, we will have one primary beamline, one

production target, and one secondary beamline.– Other beamlines are under consideration.– The hadron hall should be extended to the downstream in

the (near) future.

Japan Proton Accelerator Research Complex J-PARC - Nuclear and Particle Physics Facility -

Documents

Transcript of Japan Proton Accelerator Research Complex J-PARC - Nuclear and Particle Physics Facility -