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. ‘ to 1.5 GeV ramping in operation in ‘ 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 ‘09 Storage 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 (EPU 4.6, 2008) U9 IASW6-R2 (2007~2008) IASW6-R6 SRF Cavity SWLS Schematic and Major Milestones of TLS

SWLS High FluxEPU Seya LSGM U5 Dragon IR Tender X-ray Wiggler LIGAHSGMLithography Protein CrystallographyWide range SWLS Protein Crystallography U9 A total of 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 Decay mode Top-up mode SRF 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: 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 m DBA Lattice

March, 2006The 1 st meeting of TPS Steering Committee (Core members) April, 2006The 2 nd meeting of TPS Steering Committee (Core members) June, 2006 Sept Oct Nov The 3 rd 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 March, 2007 The 4 th 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 The 1 st 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 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, 2008 Preliminary Accelerator Design handbook (draft) The third meeting of Machine Advisory Committee (MAC) Sept Detail Design of Civil Planning Construction; Applying for Construction License OCPA Accelerator school; XBPM workshop Jan 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. 2007Sign the contract with Architecture and Design Firm 2) Sign the contract with Electrical Consulting Firm 3) April 2009Ground breaking 4) Temporary utility system to Research and Beamline Building 5) Utility system to SRF laboratory ready; system testing of RF lab. 6) Oct. 2010Complete the frame work of TPS storage ring 7) Complete the utility tunnel between utility building and storage sing 8) Starting the Installation and tests of LINAC 9) Complete temporary utility piping to the location of LINAC and SRF 10)Installation the girder system of booster and setup the alignment markers 11) April, 2011Installation of booster magnets 12) July, 2011Owner’s License of civil construction storage ring 13) Oct.2011Utility system ready for the cryogenic system in the storage ring) 14)Utility system for the booster ready 15)Complete the installation of booster 16)Commissioning of the booster 17)Jan. 2012Installation of storage ring 18)July, 2012Cryogenic system ready, 700W. SRF testing starts 19)Oct. 2013Commissioning the Storage ring 20)Complete the testing of the 3 rd SRF system 21)Oct. 2014Open to users

Optical Functions of TPS (distributed dispersion, low emit.) Engineering Layout of one-cell DBA lattice

Electron beam size 79H2 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 TPS Ch. Wang et. al