Gwo-Huei Luo on behalf of

Keng Liang and TPS Design Team

NSRRC, Hsinchu, Taiwan

XBPM and Beam Stability Workshop, Sept. 11, 2008

Status of TLS and Taiwan Photon Source Project

有朋自遠方來不亦悅乎

There are friends come from far distance, it is one of great pleasure.

拋磚引玉

Throw a stone to draw a jade.

集眾智、獻良策、定良方Collective wisdom, collecting the suggestions, finding the best solution.

Prospect of XBPM and beam stability workshop

• To exchange ideas, and share experience on the issue of XBPM and control of beam stability.

• The workshop will cover the topics of XBPM structure, performance, beam physics and the feedback system

• Builds upon the common user requirements, performance and operation principles to define the essential characteristics of an working environment of the XBPM that delivers the best beam stability.

Current status of TLS

•Commission on Apr. open to users on Oct. ‘93

•1.3 to 1.5 GeV ramping in operation in ‘96

•240 mA operation beam current in ‘96

•Upgrade booster from 1.3 GeV to 1.5 GeV full energy injection in ’00

•Sc. wavelength shifter in operation in ‘02.

•Cryogenic system and SW6 available in ‘04

•SRF cavity in operation on Feb. ‘05.

•Top-up injection implemented on Oct. ‘05.

•IASW installed on Feb. ’06; two IASW in ‘09Storage Ring

(1.51 GeV)

Booster Ring(1.51 GeV)

Beamline

LINAC

Transport Line

SW6

W20

IASW6-R4(2007~2008)

U5(EPU5.6, 2008)

EPU5.6(EPU4.6, 2008)

U9

IASW6-R2(2007~2008)

IASW6-R6

SRF Cavity

SWLS

Schematic and Major Milestones of TLS

SWL

S

SWL

S

High Flux

EP

USeya

LS

GM

U5

Dragon

IR Tender X

-ray

Wiggler

Wiggler

Wiggler

LIG

A

HS

GM

Lithography

Protein C

rystallography

Wide range

SWL

S

Protein C

rystallography

U9

A total of 640.9375 user shifts

Beam time requested vs. allocated for different beamlines in 2007

Requested beam time

Delivered beam time

Commissioning or study

Statistics of TLS Operation Statistics of Availibility

0.0

10.0

20.0

30.0

40.0

50.0

60.0

70.0

80.0

90.0

100.0

2002 2003 2004 2005 2006 2007

Year

Pec

enta

ge o

f av

alib

ility

(Del

iver

ed tim

e)

0

50

100

150

200

250

300

350

400

450

Hou

r

Availibility (%)

Delivered time (100 Hours)

MTBF(hour)

Decay modeDecay mode Top-up modeTop-up mode

SRF in OPSRF in OP

Overview of TPS Project

Major Parameters

• Beam energy : 3 GeV• Beam current: 400 mA (300 mA in Phase-1)• Emittance: 1.6 nm-rad.• Lifetime: > 10 hours• Straight Sections: 7 m (18); 12 m (6)• Number of IDs : > 6 (budget from NSRRC Op.) • Lattice structure: DBA• Circumference: 518.4 m• Critical photon energy: 7.13 keV

Basic Features of TPS

• Low emittance lattice – increasing the brightness• Robust and flexible operation lattice – suitable for

various operation condition• Top-Up operation – Constant thermal loading• Sharing tunnel booster – Low emittance, easy for

injection, and reduce the complexity of civil construction

• Single bunch injection – few bunches, hybrid filling pattern

• SRF cavities – Reduction of HOMs, increasing photon flux and less cavities.

Brilliance of 518.4 m DBA Lattice

March, 2006 The 1st meeting of TPS Steering Committee (Core members)

April, 2006 The 2nd meeting of TPS Steering Committee (Core members)

June, 2006

Sept. 2006

Oct. 2006

Nov. 2006

The 3rd meeting of TPS Steering Committee (All members)

Board of Trustee endorse the Proposed Synchrotron, Const. Site and Budget Allocation.

「 The Construction Proposal of TPS 」 submitted to National Science Council (NSC)

NSC endorsed 「 The Construction Proposal of TPS 」 ; Allocated 100 MNT as starting fund.

「 The Construction Proposal of TPS 」 , 「 Proposal of Civil Planning 」 Submitted to

Executive Yuen for review.

Feb. 2007

March, 2007

March, 2007

The 4th meeting of TPS Steering Committee (Core members)

Economics Planning Council endorse 「 Proposal of TPS Civil Planning 」 (1.75 BNT)

Executive Yuen endorse 「 The Construction Proposal of TPS 」 , 「 Proposal of Civil

Planning 」

TPS Major Milestone and Planned Schedule

June, 2007

July, 2007

Oct. 2007

The 1st Meeting of Machine Advisory Committee (MAC) ; Review the Progress of TPS Project.

The 5th Meeting of Steering Committee (core members)

Sign the Contract with Architecture and Design Firm

Jan. 2008

May, 2008

The 2nd meeting of Machine Advisory Committee (MAC) ， Storage Ring Lattice-Baseline

Strategic Planning Meeting of User and Beamline

Utility mini-workshop; Power Supplies and Control Interface Review meeting.

June, 2008

July, 2008Preliminary Accelerator Design handbook (draft)The third meeting of Machine Advisory Committee (MAC)

Sept. 2008 Detail Design of Civil Planning Construction; Applying for Construction License

OCPA Accelerator school; XBPM workshop

Jan. 2009

April, 2009

The first meeting of Science Advisory Committee (SAC) and 4th MAC meeting

Contract with Civil Construction Company; Groundbreaking

Scheduled Major Milestones of TPS Project

1) Oct. 2007 Sign the contract with Architecture and Design Firm2) Sign the contract with Electrical Consulting Firm3) April 2009 Ground breaking4) Temporary utility system to Research and Beamline Building5) Utility system to SRF laboratory ready; system testing of RF lab.6) Oct. 2010 Complete the frame work of TPS storage ring7) Complete the utility tunnel between utility building and storage sing8) Starting the Installation and tests of LINAC9) Complete temporary utility piping to the location of LINAC and SRF10) Installation the girder system of booster and setup the alignment markers11) April, 2011 Installation of booster magnets12) July, 2011Owner’s License of civil construction storage ring13) Oct.2011 Utility system ready for the cryogenic system in the storage ring)14) Utility system for the booster ready15) Complete the installation of booster16) Commissioning of the booster17) Jan. 2012 Installation of storage ring18) July, 2012 Cryogenic system ready, 700W. SRF testing starts19) Oct. 2013 Commissioning the Storage ring20) Complete the testing of the 3rd SRF system21) Oct. 2014 Open to users

OPTICAL FUNCTIONS TPS 79H2

0 10 20 30 40 50 60 70 800

5

10

15

20

25

30

S(m)

Op

tica

l F

un

ctio

ns

(m

)

x

y

x*10

emittance = 1.6 nm-rad

Optical Functions of TPS (distributed dispersion, low emit.)

Engineering Layout of one-cell DBA lattice

Electron beam size79H2

1% coupling

Front-end Layout of Insertion Devices

A. Shen et. al.

17

Perspective of the TPS

18

Perspectives of the Storage Ring

19

Night Views of the TPS

Feedback from workshop• What is the reliability of XBPM using in orbit

feedback loop? Will that generate cross-talk with the with the feedback by e-BPM in the storage ring?

• How difficulty to separate the signal pollution of XBPM from bending radiation to ID radiation?

• Is that essential to have a Decker’s distortion to get clean signal for the photon BPM or XBPM?

• Is there a scheme to normalize the beam shape, orbit or angle, or photon energy changes due to the change of IDs’ gap at ID beamlines?

• Does TPS need canted beam line at straight section? What is the beneficial to have such layout?

Thank you for your efforts

Operation Statistics Comparing with Other Facilities

TLS Operation Goal• Highly Reliable: MTBF > 80 hr;• Highly Available: Up-time better than 98%;• Difficulty to be better with manpower and budget focusing on TPSCh. Wang et. al