FJPPL-FKPPL Workshop on ATF2 Accelerator R&D

19 Mar 2012, 08:30 → 20 Mar 2012, 18:30 Europe/Zurich

Room 166 in building 200 (Laboratoire de l'Accélérateur Linéaire)

Research on the Accelerator Test Facility 2 at KEK (Japan) is conducted at LAL (Orsay), LLR (Palaiseau) and LAPP (Annecy) in the context of the FJPPL "Toshiko Yuasa" and FKPPL Associated International Laboratories, in close collaboration with several Asian, European and American partners. This workshop will review recent activity, progress and plans towards the two main goals of ATF2: Goal 1 (establish and maintain a 37 nm vertical beam size at the interaction point) and Goal 2 (stabilise the beam spot at the interaction point with a 1-2 nm precision using feedback). In addition, an interim review will be organised for several future projects planned to start in 2012 and beyond, covering both their scientific objectives and technical discussions.

LAL Meeting Web Page for registration and practical information http://events.lal.in2p3.fr/ATF2/

Webex for Monday webex-m.txt

Webex for Tuesday webex-t.txt

Monday 19 March ¶

08:30 → 09:00 Registration and welcome coffee¶

09:00 → 10:30 "Goal 1 R&D" first part¶

Convener: Dr Toshiaki Tauchi (KEK)

09:00 Welcome and short introduction¶

Speaker: Philip Bambade (Laboratoire de l''Accelerateur Lineaire (LAL) (IN2P3) (LAL))

Slides welcome_and_introduction.ppt

09:10 Status of DR + EXT emittance¶

Prospects for emittance reduction in DR and for control the growth in the extraction line through appropriate actions (operationally and via improvements), presented via webex

Speaker: Dr Kiyoshi Kubo (KEK)

Slides Status_of_DR_and_EXT.pdf

09:35 Summary of February-March ATF2 running¶

Presented via webex.

Speaker: Dr Kiyoshi Kubo (KEK)

Slides Status_of_IP_beam_size_tuning.pdf

10:00 Status of Beam Size Monitor¶

Handling and estimation of systematics, assessment sensitivity in recent operational conditions and resulting overlap between crossing angle modes

Speaker: Ms Jacqueline Yan (University of Tokyo)

Slides 120319-ATF2projectmeeting-jackie1.pdf

10:30 → 11:00 Coffee break¶

11:00 → 12:50 "Goal 1 R&D" second part¶

Convener: Philip Bambade (Laboratoire de l''Accelerateur Lineaire (LAL) (IN2P3) (LAL))

11:00 Propagation of beam halo¶

Simulation of transmission and interception in different optics, taking into account physical apertures, via webex

Speaker: Ms Sha BAI (IHEP)

Slides Propagate_beam_halo.pdf

11:25 GEANT4 simulation of bremstrahlung photon background¶

Speaker: Hayg Guler

Slides Shintake_Update.pdf

11:50 New goal 1 proposed strategy¶

Interim discussion of planning for spring training and autumn dedicated operation

12:20 Goal 1 showstoppers and priorities¶

Discussion of preparatory work for spring runs and dedicated autumn operation

12:50 → 14:30 Lunch¶

14:30 → 16:00 "Goal 2 R&D" first part¶

14:30 Low-Q IPBPM status¶

Status of final BPM fabrication and beam test results. Status of electronics.

Speaker: Mr Siwon Jang (KNU)

Slides Low-Q_IP-BPM_status.pdf

15:00 Mechanics for Low-Q IPBPM¶

Status of external vacuum chamber and IPBPM mover design. Fabrication and test plans. Expected schedule.

Speaker: Sandry Wallon (Laboratoire de l'Accélérateur Linéaire, IN2P3-CNRS)

Transparents ATF2_IP_Chamber_-_mechanical_developments_-_LAL-IN2P3-CNRS_-__19_march_2012.pdf

15:30 IP feedback using IPBPMs¶

Plans and requirements within FONT beam stabilisation R&D, via webex

Speaker: Prof. Philip Burrows (Oxford University)

Slides FONT_IPFB_LAL_meeting_mar12.ppt

16:00 → 16:30 Coffee break¶

16:30 → 18:30 "Goal 2 R&D" second part¶

Convener: Nobuhiro Terunuma (KEK)

16:30 IPBPMs and the IPBSM¶

Usage of IPBPMs for the IPBSM. Plans and specifications for combined operation.

Speaker: Ms Jacqueline Yan (University of Tokyo)

Slides 120319-ATF2projectmeeting-jackie2.pdf

16:50 Thoughts for IPBPM calibration¶

Requirements and envisioned methods

Speaker: Philip Bambade (Laboratoire de l''Accelerateur Lineaire (LAL) (IN2P3) (LAL))

Slides thoughts-IPBPM-calib.ppt

17:10 IPBPM resolution studies¶

Current status and preparatory work

Speaker: Mr Siwon Jang (KNU)

Slides Future_plan_of_IP-BPM.pdf

17:30 Overview of IPBPM objectives¶

Expected usage and possible staging of objectives

Speaker: Dr Toshiaki Tauchi (KEK)

Slides atf2-ipbpm-tauchi.pdf

18:00 Schedule¶

Articulation of goals 1 & 2 in 2012-2013. Discussion.

Speaker: Nobuhiro Terunuma (KEK)

Slides FJPPL-FKPPL-terunuma.pptx

19:30 → 21:30 Workshop Dinner¶

Tuesday 20 March ¶

09:00 → 10:15 New projects¶

Convener: Dr Toshiaki Tauchi (KEK)

09:00 New kicker for ATF/ATF2¶

Brief update of the CERN / Spain proposal for a new stable kicker satisfying ATF / ATF2 specifications followed by discussion

Speaker: Daniel Schulte (CERN)

Slides Status_or_Kicker_Development_March_2012-1.pptx

09:25 Final doublet upgrade¶

CERN plan for high field quality final doublet magnets in hybrid technology, with relevance both to the ATF2 ultra-low beta optics and to CLIC R&D. Via webex.

Speaker: Alexei Vorozhtshov (CERN)

Slides FD_upgrade_Alexey_Vorozhtsov.ppt

09:50 Multiple GM sensors at ATF2¶

CERN & LAPP plans for installation and tests of GM sensors at ATF2. Project scientific goals and expected timeline.

Speaker: Yves Renier (CERN)

Slides Possibility_to_detect_ground_motion.pdf

10:15 → 10:45 Coffee break¶

10:45 → 12:35 Progress reports¶

Convener: Philip Bambade (Laboratoire de l''Accelerateur Lineaire (LAL) (IN2P3) (LAL))

10:45 Reconstruction of Twiss parameters¶

Consistency of recent OTR and IP Twiss parameter measurements, via webex.

Speaker: Ms Sha BAI (IHEP)

Slides Reconstruction_of_Twiss_parameters_.pdf

11:05 Trajectory measurements¶

Updated results and future plans for ATF2 operation

Speaker: Mr Hector Garcia Morales (CERN)

Slides kek_talk.pdf

11:25 Back-scattered neutron modeling and measurement¶

Speaker: Dr Hayg Guler (LLR Ecole Polytechnique, France)

Slides ATF2_LAL_NeutronUpdate_Guler.pdf

11:45 Post-IP halo and Compton electron recoil spectrum measurement¶

Speaker: HyoJung Hyun (KNU and LAL)

Slides 120320_ATF2workshop_hjhyun.pdf

12:05 FONT analysis progress¶

Update on FONT beam test results from October-December 2011, via webex

Speaker: Dr Glenn Christian (John Adams Institute of Accelerator Science, University of Oxford)

Slides gchristian_200312.pdf

12:35 → 13:40 Lunch¶

13:40 → 15:00 Additional discussion -1¶

(1) FD hybrid magnet engineering issues
(2) IPBSM systematics and reproducibility issues

Convener: Dr Andrea Jeremie (LAPP)

15:00 → 15:30 Coffee break¶

15:30 → 17:00 Additional discussion - 2¶

(1) IP-BPM mechanical engineering issues
(2) Feedforward validation using multiple GM sensors

Convener: Nobuhiro Terunuma (KEK)

17:00 → 17:30 Close-out¶

17:00 Role and Importance of FJPPL / FKPPL¶

Speaker: Philip Bambade (Laboratoire de l''Accelerateur Lineaire (LAL) (IN2P3) (LAL))

17:15 Summary of workshop¶

Speaker: t.b.a.