WAMSDO 2013 - Workshop on Accelerator Magnet, Superconductor, Design and Optimization - 15-16 January, Bldg. 6/2-024

15 Jan 2013, 09:00 → 16 Jan 2013, 17:00 Europe/Zurich

CERN

Topic: The quench modelling, detection and protection of the individual superconducting magnets for LHC upgrades and future machines. The workshop is intended to support the ongoing collaborative design efforts of these magnets. The protection of the actual circuits in the machines is not part of this workshop in order to concentrate better on the early design efforts on these high field and/or large aperture magnets.

Tuesday, 15 January

1 Welcome

Speaker: Gijs De Rijk (CERN)

2 Quench 101

basics of quench thermal, electric and hydraulic phenomena. Physic models and their nature. Hot-spot, effect of cooling, helium flows. Voltages. Temperature gradients and thermal stresses. Propagation. Protection strategies depending on magnet size - scalings.

Speaker: Mr Luca Bottura (CERN)

Paper 1_rev_final.docx 1_rev_final.pdf

Slides Quell.pdf Quell.pptx

3 coffee break

4 Quench protection for the LHC

Quenches experienced, natural (training), induced (beam), triggered (QH discharge) during operation. Quench propagation in the string. Quench protection in the machine vs. test benches (threshold, filters, etc.). Preventive thresholds (BLM) and related issues.

Speaker: Arjan Verweij (CERN)

Slides WAMSDO_2013_Verweij_2.pdf WAMSDO_2013_Verweij_2.pptx

5 Quench limits in the next generation of magnets

What are the physical limits and how close to those limits should a magnet be during quenching, what will the new magnets in LHC require from QD+P point of view ?

Speaker: Dr Ezio Todesco (CERN)

Paper 3_rev_final.docx 3_rev_final.pdf

Slides et_wamsdo_1301.pdf et_wamsdo_1301.pptx

6 New ideas on quench detection and protection

Speakers: Gijs De Rijk (CERN), Mr Luca Bottura (CERN)

Slides WAMSDO13-GdR-2.pdf WAMSDO13-GdR-2.pptx

7 lunch break

8 Modelling quenches - a review of the tools

physics, programming, validation, distribution and availability

Speaker: Helene Felice (Lawrence Berkeley National Lab. (LBNL))

Paper 5_rev_final.docx 5_rev_final.pdf

Slides WAMSDO_HFelice.pdf WAMSDO_HFelice.pptx

9 Quench in HTS magnets

physics and issues. State-of-the-art

Speaker: Justin Schwartz (North Carolina State University)

Paper 6_rev_final.docx

Slides WAMSDO_2013_v2.pdf WAMSDO_2013_v2.pptx

10 coffee break

11 Topic 1: Heat transfer and quench propagation from quench heaters

modeling, issues, limits, ideas

Speaker: Tiina Salmi (Lawrence Berkeley National Laboratory)

Paper 7_rev_final.docx 7_rev_final.pdf

Slides Wamsdo_salmi_Jan152013.pdf Wamsdo_salmi_Jan152013.pptx

12 Topic 2: Detecting mechanical vibrations in superconducting magnets for quench detection and diagnostics

Speaker: Mr Maxim Marchevsky (LBNL)

Paper 8_rev_final.docx 8_rev_final.pdf

Slides

• Detecting_mechanical_vibrations_wamsdo_mm.pdf
• Detecting_mechanical_vibrations_wamsdo_mm.pptx
• Sound_slides_talk.pptx

13 Topic 3: Propagation speed

adiabatic, cooled, transverse, LTS, HTS, helium mediated - (some of this could also be in the first talk on basic quench theory)

Speaker: Herman Ten Kate (CERN)

Slides TenKate_-_WAMSDO_2013_Propagation(15Jan13).pdf

14 Topic 5: Considerations on Quenching HTS Coils

Speaker: Matthieu Dalban-Canassy (Florida State University)

Slides Dalban-WAMSDO2013-Quenching_HTS_coils.pdf

19:30 Social Dinner

The banquet will start at 07:30 p.m. at:
Brasserie des Halles de L’Ile (Address: Place de l’Ile 1, 1204 GENEVA)
Phone Nr.: + 41 22 311 08 88
http://www.brasseriedeshallesdelile.ch/lieu.htm

The asking price for the dinner will be 46 chf/person (sum to be given directly to Gijs de Rijk, please have the exact cash with you).
Click below for directions from CERN to ‘La Brasserie’:

http://maps.google.fr/maps?f=d&source=s_d&saddr=CERN,+Meyrin,+Switzerland&daddr=Brasserie+des+Halles+de+l'Ile,+Place+de+l'Ile,+Geneva,+Switzerland&hl=en&geocode=FWd5wQIdl2hcACFdbCobN2TV9SmtUkfa-mKMRzFdbCobN2TV9Q%3BFW0HwQIdHLRdACF6tQ2o8zIGjilp3cMr1mSMRzF6tQ2o8zIGjg&aq=0&oq=bRASSERIE+HALL&sll=46.75984,1.738281&sspn=12.631604,18.522949&vpsrc=0&mra=ls&ie=UTF8&t=m&z=13&layer=c&ei=4y71UIvtJdLd8QP6kYGoAQ&pw=2
Click below for getting the route planner with ‘Transport Public Genevois’:

http://tpg.hafas.de/hafas/tp/query.exe/en?

Wednesday, 16 January

15 Case study 1: Models and experimental results from the HQ-LQ and QXF

Speaker: Giorgio Ambrosio (Fermilab)

Paper 11_rev_final.docx 11_rev_final.pdf

Slides Ambrosio_LQ-HQ-QXF_5_corr.pdf Ambrosio_LQ-HQ-QXF_5_corr.pptx

16 Case study 2: Models and experimental results from the 11 T DS Nb3Sn dipole

Speaker: Guram Chlachidze (Fermilab)

Paper 12_rev_final.docx 12_rev_final.pdf

Slides WAMSDO_2013_Guram_Chlachidze.pdf WAMSDO_2013_Guram_Chlachidze.pptx

17 Case study 3: Models and experimental results from the wide aperture Nb-Ti magnets MQXC, D1 and Q4

Speaker: Glyn Kirby (CERN)

Paper 13_rev_final.docx 13_rev_final.pdf

Slides WAMSDO_Jan_2013_Kirby_v2.pdf WAMSDO_Jan_2013_Kirby_v2.pptx

18 Case study 4: Quench analysis for the HD program

19 coffee break

20 Case study 5: Protection of Fresca2

Speaker: Philippe Fazilleau (DAPNIA)

Paper 14_rev_final.docx 14_rev_final.pdf

Slides WAMSDO_StudyCase5_PhFazilleau.pdf WAMSDO_StudyCase5_PhFazilleau.pptx

21 Case study 6: Protection of insert-outsert combined magnets

Speaker: Antti Aleksis Stenvall (Tampere University of Technology)

Paper 15_rev_final.docx 15_rev_final.pdf

Slides WAMSDO-stenvall-presentation.pdf

22 Case study 7: Radiation damage effects on RRR

Speaker: Rene Flukiger (Florida State University (US))

Paper 16_rev_final.docx 16_rev_final.pdf

Slides 17-Flükiger_final_WAMSDO_16.1.2013.pdf 17-Flükiger_final_WAMSDO_16.1.2013.pptx

23 discussion, what are the actions we need ?

Slides wrap-up_ideas.pdf wrap-up_ideas.pptx

24 closing of the workshop

Speaker: Gijs De Rijk (CERN)

25 lunch break