FJPPL-FKPPL Workshop on ATF2 Accelerator R&D

17 Mar 2014, 09:00 → 19 Mar 2014, 15:00 Europe/Zurich

Salle des Sommets (LAPP Laboratoire d'Annecy-le-Vieux de Physique des Particules)

Andrea Jeremie (LAPP)

Research on the Accelerator Test Facility 2 at KEK (Japan) is conducted at LAL (Orsay) and LAPP (Annecy-le-Vieux) 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 is mainly dedicated to Goal 2 (stabilise the beam spot at the interaction point with a 1-2 nm precision using feedback). This meeting will be a follow-up of the 17th ATF2 Project meeting at KEK in February 2014 with discussions on recent progress, and preparation of a plan for short-term activities as well as an evolution in the coming years. Fuzebox : meeting numbers and Toll / Intl #: +1 (201) 479-4595; http://fuze.me/18598083 on 17th March http://fuze.me/18598131 on 18th March http://fuze.me/18598139 on 19th March

Monday, 17 March

1 Welcome, practical matters, introduction

Slides introannecy2014.pdf introannecy2014.pptx

ATF2 beam size studies and Goal 1

Convener: Dr Toshiaki Tauchi (KEK)

2 Stability studies based on IP-BSM fringe pattern analysis

(remotely)

Speaker: Ms Jacqueline Yan (University of Tokyo)

Slides FJPPL-FKPPL-ATF2140317.pdf FJPPL-FKPPL-ATF2140317.ppt

3 Review of laser stability improvements and results

Speaker: Nobuhiro Terunuma (KEK)

Slides ComptonStability.pdf ComptonStability.pptx

4 Beam tuning status

Speaker: Dr Toshiyuki Okugi (KEK)

Slides ATF2_okugi_20140317.pdf

5 Emittance measurement and wakefield study

Remotely

Speaker: Dr Kiyoshi Kubo (KEK)

Slides Emittance-Wake.pptx

6 Coffee break

Plans for Goal 1

Convener: Nobuhiro Terunuma (KEK)

7 Discussion of beam operation schedule for goals 1&2 in April-June

Speaker: Dr Toshiyuki Okugi (KEK)

8 Assessment of goal 1 progress and issues to be focused on

(remotely)

Speaker: Dr Kiyoshi Kubo (KEK)

Slides

• Assessment_of_Goal_1.pdf
• Assessment_of_Goal_1.pptx
• correctionAssessment_of_Goal_1.pdf
• correctionAssessment_of_Goal_1.pptx

9 Discussion towards Goal 1

All

10 Lunch

Diamond detector

11 Report on recent diamond sensor testing at LAL

Speakers: Mr Illia Khvastunov (University of Kiev), Ms Shan Liu (LAL)

Slides Diamond_detector_tests_at_PHIL.pdf

12 Design and detailed plan for in vacuum diamond sensor for PHIL and ATF2

Speaker: Ms Shan Liu (LAL)

Slides Design_of_new_diamond_detector.pdf Design_of_new_diamond_detector.pptx

13 Discussion

14 Coffee break

Tuesday, 18 March

IP BPM

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

15 Analysis of IP-BPM beam based alignement, sensitivity to angle

Speaker: Oscar Roberto Blanco Garcia (Universite de Paris-Sud 11 (FR), CERN)

Slides FJPPL2014.pdf

16 FONT digitisation studies of IPBPMs

Speaker: Mr Neven Blaskovic Kraljevic (PhD student)

Slides 2014-03-17_Blaskovic_170314_(FONT_digitisation_studies_of_IP_BPMs).pdf 2014-03-17_Blaskovic_170314_(FONT_digitisation_studies_of_IP_BPMs).pptx

17 Discussion

18 Coffee break

Jitter measurements and reconstruction of sources

Convener: Dr Andrea Jeremie (LAPP)

19 QF1 jitter studies

Speaker: Dr Andrea Jeremie (LAPP)

Slides QF1annecy2014.pdf QF1annecy2014.pptx

20 Beam jitter reconstruction and identification

Speaker: Juergen Pfingstner (CERN)

Slides

• jitter_study.pdf
• jitter_study.pdf
• jitter_study.ppt

21 Feasibility of the GM feedforward and the future plan

Speaker: Juergen Pfingstner (CERN)

Slides

• ATF2_ground_motion_experiment.pdf
• ATF2_ground_motion_experiment.ppt
• jitter_study.pdf

22 Discussion on synchronisation improuvement

Speaker: Juergen Pfingstner (CERN)

Slides

• synchronisation.pdf
• synchronisation.pdf
• synchronisation.ppt

23 Discussion

24 Lunch

ILC BDS and IP tuning

Discussion

Convener: Dr Toshiyuki Okugi (KEK)

25 Material for discussion

Speaker: Dr Toshiyuki Okugi (KEK)

Slides ATF2_okugi_20140318.pdf

26 discussion

27 Coffee break

Visit LAPP facilities

Convener: Dr Andrea Jeremie (LAPP)

28 Short presentation of LAPP

Speaker: Dr Andrea Jeremie (LAPP)

Slides introLAPP.pdf introLAPP.pptx

29 Workshop Dinner

Wednesday, 19 March

IP Chamber and electronics

Convener: Prof. Philip Burrows (Oxford University)

30 In situ / lab re-measurement of stability + calibration with interferometer at KEK + re-cabling

Speaker: Mr Sandry WALLON (LAL-CNRS)

31 review of IP-BPM beam measurements (calibration, resolution, alignement) and of electronics and plan for dealing with internal mechanical alignment of IP-BPMs

can we live with existing misalignments, or can we find some re-adjustments, or do we need to refabricate them ?

Speaker: Mr Siwon Jang (KNU)

32 review of specification / requirements for electronics readout of IP-BPMs

Speaker: Dr Toshiaki Tauchi (KEK)

slides updated atf2.ipbpm-electronics_review.pdf

33 Discussion: strategy, immediate/short/long term goals for IP-BPM

Program, experimental test goals, new mechanics?...

Beam halo studies (1st session)

34 Halo calculations in ATF DR

Speaker: Ms Dou WANG (IHEP)

Slides ATF_halo-wangdou.pdf ATF_halo-wangdou.pptx

35 Coffee break

Beam halo studies: modeling, optical transfer issues, collimation, plans for measuring

Convener: Dr Toshiyuki Okugi (KEK)

36 YAG screen test in ATF2 extraction line for halo measurement

remote

Speaker: Mr Takashi Naito (KEK)

Slides ATF2Naito-20140319a.pdf

37 GEANT4 study of beam tail regeneration at ATF2

reminder of result for BDUMP beam pipe, present status of BDSIM for entire beam line

Speaker: Mr Illia Khvastunov (University of Kiev)

Slides khvastunov.pdf

38 Progress with halo collimation design

(especially assessment of wakefield impact)

Speaker: Nuria Fuster

Slides ATFmeeting_Annecy.pdf

Close out

Conveners: Philip Bambade (Laboratoire de l''Accelerateur Lineaire (LAL) (IN2P3) (LAL)), Dr Toshiaki Tauchi (KEK)

39 Lunch