NED CONDUCTOR REVIEW

Contribution List

9. NED ESAC introduction

04/11/2008, 13:20

0. History of the NED conductor program

Luc-Rene Oberli (CERN)

04/11/2008, 13:30

The aims, the developments over the 4 years, the benchmark numbers, how we got to the NED specification

1. Results of the PIT conductor development

Thierry Boutboul (CERN)

04/11/2008, 13:45

In the frame of the NED project, EAS/SMI successfully developed a Powder-In-Tube Nb3Sn conductor design and is currently manufacturing the final strand. The strand development, fabrication and delivery will be reviewed, together with characterization results for the achieved strands.

2. Results of the IT conductor development

Luc-Rene Oberli (CERN)

04/11/2008, 14:05

The strand development performed by Alstom through an innovative fabrication process and through a more conventional process will be reviewed together with the results achieved during the first two steps of development preceding the final fabrication on the NED strand. Alstom is currently launching in fabrication the final strand for the NED project. The delivery schedule of the final strand...

3. Results of the cable development

Thierry Boutboul (CERN)

04/11/2008, 14:30

For the NED program, two Rutherford-type cables were already made on the basis of PIT strands: a 40-strand ~27 mm wide cable by LBNL and a 14-strand ~ 10 mm wide cable for the Short Model Coil program at CERN. The characterization results for strands extracted from both cables are summarized and the cabling critical current degradation is discussed as function of the heat treatment schedule.

4. Guidelines on stability

Bernardo Bordini (Unknown)

04/11/2008, 14:50

What are the outstanding stability issues and what does this mean for the parameter space of Fresca2 and HQ. Requirements on strand diameter, filament diameter and RRR in relation to Jc and B.

5. Review on stress sensitivity

Bernd SEEBER (University of Geneva), René Flükiger (University of Geneva)

04/11/2008, 16:00

What do we know about stress sensitivity and where do we need more data. What do we need for Fresca2 and HQ on stress robustness.

6. Dipole conductor needs: examples for Fresca2

Glyn Kirby (CERN)

04/11/2008, 16:35

Using several existing cables (e.g. HD2-OST and NED) a comparison will be presented between the existing HD2 and a set of conceptual Fresca2 designs. The conceptual designs are cosΘ, block coil and hybrid Nb3Sn - Nb-Ti block coil. From this directions and its consequences for conductors needed for high fields will be indicated.

7. Quadrupole conductor needs: examples for HQ

Shlomo Caspi (Lawrence Berkeley national laboratory USA)

04/11/2008, 17:00

Using the HQ as an example, the possible field and stress values for a fixed number of conductor cases and coil layouts are to be evaluated. From this a recommendation which type of conductor would be best is to be deduced.

8. Adjourn

04/11/2008, 17:25