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    HITRI-WP8 meeting 4

    → Europe/Zurich
    Lucio Rossi (Università degli Studi e INFN Milano (IT))
    Description

    Link Zoom: https://cern.zoom.us/j/4034916149?pwd=OVhlZkgzcHdOcWhIYVYvVDVFWHNmdz09

    Meeting ID: 403 491 6149
    Passcode: 748472

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    Hitriplus WP8 Meetings:

    Meeting # 4
    Date: 2021-09-07
    Video Conference

    Attendees: L. Rossi, A. Ahl, A. Ballarino, D. Barna, E. Benedetto, M. Blagojevic, K. Brunner, C. Calzolaio, G. Ceruti, E. De Matteis, A. Echeandia, S. Farinon, E. Felcini, M. Gehring, G. Kirby, T. Lecrevisse, S. Mariotto, J. Munilla, R. Musenich,

    Agenda:

    1. Lucio Rossi: Status of WP8 and workshop CCT (20 min).
    2. Daniel Barna: Update on file exchange (10min)
    3. Dora Veres: Update on FQ and magnet design optimization for curved dipole (20 min)
    4. Ernesto De Matteis: Progress on design comparisons (20 min)
       


    1. Status of WP8 and workshop

    Lucio Rossi: coordinator of the Hitriplus WP8, shares a presentation (for details see the indico page https://indico.cern.ch/event/1072474/ ).

    In deliverables table, the responsible institute of the task 8.1 is CEA (supported by INFN).
    The task 8.2 should assess the technical difficulty of the designs and the financial cost of the different options. This include the cost variation in cooling temperature that is possible with different superconductors. The evaluation of this task will also be critical for the decision of the demonstrator to be designed and built (synchrotron and gantry magnet).
    Lucio shows the rule of the game for the comparison between different design and materials (see the presentation on indico page).
    Lucio shows the CCT study matrix for comparing various options. About the race track design, he asked to C. Calzolaio (PSI), if they are interested to the study. Ciro replies that for the moment they don’t have resources for the study. Lucio asks at least for one design based on race track in the list. Ciro will discuss with his management (answer by next meeting).
    Lucio invites also to take the Design Option matrix (see excel file in the same Indico file, and complete). The Institutes that have subscribed to task 8.1 and 8.2 are supposed to contribute, at a level proportional to the personnel they receive form EU.

    Lucio reminds to the audience that we have to finalize the submission of the EUCAS 2021 paper “A European collaboration to investigate Superconducting Magnets for Next Generation Heavy Ion Therapy” (sent by email in last days to all the institutes/authors involved) within the end of this week (in principle we have two weeks). So please send feedback, if any, by 9 September. The predesign presented there is just straw-man design, just to start. We have to make the real design by Feb’22.


    2. Progress on design comparisons

    Ernesto De Matteis: shares and presents the last progress done on design comparisons, concerning the CCT magnet design. The CCT designs shown are based on the rules of game fixed during the last Hitriplus WP8 meeting (presented also by Lucio). For more details, see the presentation on Indico page.

    Concerning the forces and stress analysis implemented for the straight CCT, G. Kirby recommends to consider the shear stress between conductor and resin or resin and ribs, as main effect of the radial pressure He insisted that the shearstrength (adhesion) maybe easily lower than the shear stress, entailing cracks, and then quenches. S. Farinon recommends to implement also a 3D simulation for a correct mechanical analysis: differently form e.m analysis, mechanical analysis pf a real 3 D shape cannot be reduced to 2 D.


    3. Update on file exchange

    Daniel Barna: communicates that as file exchange tool (e.g. files .stp) the final decision is GrabCAD.


    4. Update on FQ and magnet design optimization for curved dipole

    Dora Veres: shares a presentation with the title “Optimization of the Winding of a Curved CCT”(for details see the indico page https://indico.cern.ch/event/1072474/).

    The presentation was very complete and the audience commented is a very good step into e.m. design of curved magnet.

    G. Kirby highlights a general comment on the CCT, the necessity to measure the longitudinal component of the magnetic field. Lucio agrees and he says that could be a good point for Sentronis.

     

    Actions:

    • PSI to confirm if they can study one option with race track.
    • Complete the Design Option matrix by Institute sog task 8.1 8.2 (INFN -Lasa and INFN-Ge, CEA, Wigner, CERN, CIEMAT)
    • Consider shear stress (INFN with G. Kirby) and implement 3 D mech model (INFN and all other institutes making design)

       

    Documents
    Prepared by: E. De Matteis
    Date: 2021-09-08
    Approved by: L. Rossi
    Date: 2021-09-09

     

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