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

1 Registration and welcome coffee

"Goal 1 R&D" first part

Convener: Dr Toshiaki Tauchi (KEK)

2 Welcome and short introduction

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

Slides welcome_and_introduction.ppt

3 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

4 Summary of February-March ATF2 running

Presented via webex.

Speaker: Dr Kiyoshi Kubo (KEK)

Slides Status_of_IP_beam_size_tuning.pdf

5 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

6 Coffee break

"Goal 1 R&D" second part

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

7 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

8 GEANT4 simulation of bremstrahlung photon background

Speaker: Hayg Guler

Slides Shintake_Update.pdf

9 New goal 1 proposed strategy

Interim discussion of planning for spring training and autumn dedicated operation

10 Goal 1 showstoppers and priorities

Discussion of preparatory work for spring runs and dedicated autumn operation

11 Lunch

"Goal 2 R&D" first part

12 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

13 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

14 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

15 Coffee break

"Goal 2 R&D" second part

Convener: Nobuhiro Terunuma (KEK)

16 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

17 Thoughts for IPBPM calibration

Requirements and envisioned methods

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

Slides thoughts-IPBPM-calib.ppt

18 IPBPM resolution studies

Current status and preparatory work

Speaker: Mr Siwon Jang (KNU)

Slides Future_plan_of_IP-BPM.pdf

19 Overview of IPBPM objectives

Expected usage and possible staging of objectives

Speaker: Dr Toshiaki Tauchi (KEK)

Slides atf2-ipbpm-tauchi.pdf

20 Schedule

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

Speaker: Nobuhiro Terunuma (KEK)

Slides FJPPL-FKPPL-terunuma.pptx

21 Workshop Dinner

Tuesday 20 March

New projects

Convener: Dr Toshiaki Tauchi (KEK)

22 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

23 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

24 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

25 Coffee break

Progress reports

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

26 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

27 Trajectory measurements

Updated results and future plans for ATF2 operation

Speaker: Mr Hector Garcia Morales (CERN)

Slides kek_talk.pdf

28 Back-scattered neutron modeling and measurement

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

Slides ATF2_LAL_NeutronUpdate_Guler.pdf

29 Post-IP halo and Compton electron recoil spectrum measurement

Speaker: HyoJung Hyun (KNU and LAL)

Slides 120320_ATF2workshop_hjhyun.pdf

30 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

31 Lunch

Additional discussion -1

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

Convener: Dr Andrea Jeremie (LAPP)

32 Coffee break

Additional discussion - 2

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

Convener: Nobuhiro Terunuma (KEK)

Close-out

33 Role and Importance of FJPPL / FKPPL

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

34 Summary of workshop

Speaker: t.b.a.