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

09:00 → 09:10 Welcome, practical matters, introduction

Slides introannecy2014.pdf introannecy2014.pptx

09:10 → 10:30 ATF2 beam size studies and Goal 1

Convener: Dr Toshiaki Tauchi (KEK)

09:10 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

09:30 Review of laser stability improvements and results

Speaker: Nobuhiro Terunuma (KEK)

Slides ComptonStability.pdf ComptonStability.pptx

09:50 Beam tuning status

Speaker: Dr Toshiyuki Okugi (KEK)

Slides ATF2_okugi_20140317.pdf

10:10 Emittance measurement and wakefield study

Remotely

Speaker: Dr Kiyoshi Kubo (KEK)

Slides Emittance-Wake.pptx

10:30 → 11:00 Coffee break

11:00 → 12:45 Plans for Goal 1

Convener: Nobuhiro Terunuma (KEK)

11:00 Discussion of beam operation schedule for goals 1&2 in April-June

Speaker: Dr Toshiyuki Okugi (KEK)

11:20 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

11:40 Discussion towards Goal 1

All

12:45 → 14:00 Lunch

14:00 → 16:00 Diamond detector

14:00 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

14:20 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

14:40 Discussion

16:00 → 16:30 Coffee break

Tuesday 18 March

09:00 → 10:30 IP BPM

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

09:00 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

09:20 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

10:00 Discussion

10:30 → 11:00 Coffee break

10:30 → 13:20 Jitter measurements and reconstruction of sources

Convener: Dr Andrea Jeremie (LAPP)

11:00 QF1 jitter studies

Speaker: Dr Andrea Jeremie (LAPP)

Slides QF1annecy2014.pdf QF1annecy2014.pptx

11:20 Beam jitter reconstruction and identification

Speaker: Juergen Pfingstner (CERN)

Slides

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

11:40 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

12:00 Discussion on synchronisation improuvement

Speaker: Juergen Pfingstner (CERN)

Slides

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

12:20 Discussion

12:45 → 14:00 Lunch

14:00 → 16:00 ILC BDS and IP tuning

Discussion

Convener: Dr Toshiyuki Okugi (KEK)

14:00 Material for discussion

Speaker: Dr Toshiyuki Okugi (KEK)

Slides ATF2_okugi_20140318.pdf

14:20 discussion

16:00 → 16:30 Coffee break

16:30 → 18:00 Visit LAPP facilities

Convener: Dr Andrea Jeremie (LAPP)

16:30 Short presentation of LAPP

Speaker: Dr Andrea Jeremie (LAPP)

Slides introLAPP.pdf introLAPP.pptx

19:30 → 22:00 Workshop Dinner

Wednesday 19 March

09:00 → 10:30 IP Chamber and electronics

Convener: Prof. Philip Burrows (Oxford University)

09:00 In situ / lab re-measurement of stability + calibration with interferometer at KEK + re-cabling

Speaker: Mr Sandry WALLON (LAL-CNRS)

09:20 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)

09:50 review of specification / requirements for electronics readout of IP-BPMs

Speaker: Dr Toshiaki Tauchi (KEK)

slides updated atf2.ipbpm-electronics_review.pdf

10:10 Discussion: strategy, immediate/short/long term goals for IP-BPM

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

10:30 → 10:50 Beam halo studies (1st session)

10:30 Halo calculations in ATF DR

Speaker: Ms Dou WANG (IHEP)

Slides ATF_halo-wangdou.pdf ATF_halo-wangdou.pptx

10:50 → 11:20 Coffee break

11:20 → 12:20 Beam halo studies: modeling, optical transfer issues, collimation, plans for measuring

Convener: Dr Toshiyuki Okugi (KEK)

11:20 YAG screen test in ATF2 extraction line for halo measurement

remote

Speaker: Mr Takashi Naito (KEK)

Slides ATF2Naito-20140319a.pdf

11:40 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

12:00 Progress with halo collimation design

(especially assessment of wakefield impact)

Speaker: Nuria Fuster

Slides ATFmeeting_Annecy.pdf

12:20 → 12:45 Close out

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

12:45 → 14:00 Lunch