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Advances in SRF Materials Research Workshop

Explore essential topics such as superheating fields, material properties, innovative processing methods, and Niobium production in this comprehensive SRF materials workshop.

eleanor-hanson
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Advances in SRF Materials Research Workshop

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  1. Session 1 : Fundamental of SRF • Is the superheating field a relevant model? Or Kenji’s one? • Do we actually observe RF superconductivity at field higher than Bc (Bc1, Bc2 or thermodynamic Bc ?) • Are there some specific RF properties we are not aware of? • What can we expect from other material (measuring basic SC parameters to implement models) SRF materials workshop

  2. Session 2 : Material properties and characterization Surface Studies • What are the limits of what we can observe compare to what we want to know? • How can we overcome the variability of the actual Nb Surface (How representative of the whole surface are the measurements?) • Are there better fitted techniques we don’t know yet? • How can we correlate surface composition/structure with SRF behavior? SRF materials workshop

  3. Session 2 : Material properties and characterization RF / Superconducting properties • Coupling with surface analysis! • Is the comparison Samples/Cavities relevant • What is the link between DC/RF properties, between low field/high field properties • Are there other parameters “easy” to measure that could give us better prediction of the cavity behavior? • Thermal transfer: influence of annealing, grain boundaries…. SRF materials workshop

  4. Session 3: New materials for the future • Can we prepare “defect free” superconductors (with at least the same material quality as the high RRR Nb we are presently using). • What can we expect from other material (measuring basic SC parameters to implement models) (cf session 1) SRF materials workshop

  5. Session 4: Innovative processing methods • How can we overcome the variability of the present surface preparation processes • What do we need to address? Surface removal (what thickness, why), particle contamination, surface modification regarding secondary emission, field emission… Are all these issues compatible between themselves? • Do we need complementary or alternative techniques? SRF materials workshop

  6. Session 5: Niobium production • What knowledge do we need to get reproducible production of the adequate material • How can we practically get reproducible production of the adequate material • Are there specific textures/ orientations with more favorable behavior (forming, magnetic transition field, work function….), how can we optimize it. • What do we still need to know? (e.g. recrystallization behavior @ welding, cold mechanical resistance of welded parts…) SRF materials workshop

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