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.