A Superconducting Nb3Sn Coated Multicell Accelerating Cavity

  title={A Superconducting Nb3Sn Coated Multicell Accelerating Cavity},
  author={M. Peiniger and Helmut Piel},
  journal={IEEE Transactions on Nuclear Science},
We report on the first results, obtained with a five cell Nb3Sn coated accelerating structure of 3 GHz. A uniform layer of Nb3Sn was formed by processing a niobium structure in a tin atmosphere at 1170°C. At 4.2 K a resonator Q of 7·109 was measured. This corresponds to a residual surface resistance of 27 n¿ which is the lowest ever achieved with a Nb3Sn cavity in the GHz range. The rf losses of this resonator are by a factor of 55 lower than those of an equivalent niobium cavity at 4.2 K. The… 

Figures from this paper

Low-Temperature Baking Effect of the Radio-Frequency Nb3Sn Thin Film Superconducting Cavity

The Nb3Sn thin film cavity, having the potential to be operated at a higher temperature and higher gradient compared to the cavity made from bulk niobium, is one of the most promising key

Nb3Sn superconducting radiofrequency cavities: Fabrication, results, properties, and prospects

A microns-thick film of Nb3Sn on the inner surface of a superconducting radiofrequency (SRF) cavity has been demonstrated to substantially improve cryogenic efficiency compared to the standard

Development of sputtered Nb3Sn films on copper substrates for superconducting radiofrequency applications

Superconducting radiofrequency (SRF) cavities that could provide a higher quality factor as well as a higher operational accelerating gradient at an affordable cost are in high demand for the future

Superconducting Cavities and their Applications-Recent Work at the University of Wuppertal

This report gives an overview over the work in rf superconductivity at the University of Wuppertal. I t references experiments which have been performed and published in the last two years and

Development of a TE011 Cavity for Thin-Films Study

Bulk niobium cavities have almost reached their maximum performances. Maximum accelerating gradient field is above 35-40 MV/m for a multi-cells cavity at 1.8 Kelvin and it achieves 25-30 MV/m with

Kinetically induced low-temperature synthesis of Nb3Sn thin films

Nb3Sn thin films are promising candidates for future application in superconducting radio frequency cavities due to their low surface resistivity, high critical temperature, and critical field, as

Fabrication and Radio Frequency Properties of 3-GHz SRF Cavities Coated with MgB2

Magnesium diboride (MgB 2 ) is considered a potential material for superconducting radio frequency cavities. MgB 2 -coated Cu cavity will allow for a higher operational temperature than a bulk Nb

Development and Understanding of Nb3Sn films for radiofrequency applications through a sample-host 9-cell cavity

Nb3Sn is a promising advanced material under development for superconducting radiofrequency cavities. Past efforts have been focused primarily on small development-scale cavities, but large, often

Development of superconducting thin films for use in SRF cavity applications

Superconducting thin films are a possible alternative to bulk niobium for superconducting radio frequency cavity applications. Thin film cavities have produced larger Q0 than bulk niobium at low

Superconducting RF materials other than bulk niobium: a review

For the past five decades, bulk niobium (Nb) has been the material of choice for superconducting RF (SRF) cavity applications. Alternatives such as Nb thin films and other higher-Tc materials, mainly



Residual microwave surface resistance of superconducting lead

An extensive experimental investigation aimed at minimizing the residual microwave surface resistance of superconducting lead is described. X‐band cavities were made by electroplating lead on copper

Measurements of the low-temperature rf surface resistance of lead at frequencies from 136 to 472 MHz

A helically loaded, lead-plated cavity has been used to measure the superconducting rf surface resistance of lead at low field levels at frequencies from 136 to 472 MHz and temperatures from 1.5 to

Experimental work on the niobium-tin constitution diagram and related studies

Three intermetallic phases Nb3Sn, Nb6Sn5 and NbSn2 are formed in the niobium-tin system. Nb6Sn5 and NbSn2 appear to be stoichiometric with narrow homogeneity range, but Nb3Sn can exist over a wide