On the Response of an OST to a Point-like Heat Source

Details On the Response of an OST to a Point-like Heat Source On the Response of an OST to a Point-like Heat Source

2011-11-23

arxiv.org/abs/1111.5520v1

Phys. Rev. ST Accel. Beams 15, 031001 (2012)

Physics

Accelerator Physics

10 pages, 16 figures

Scientific paper

10.1103/PhysRevSTAB.15.031001

A new technique of superconducting cavity diagnostics has been introduced by D. Hartrill at Cornell University, Ithaca, USA. Oscillating Superleak Transducers (OST) detect the heat transferred from a cavity's quench point via "Second Sound" through the superfluid He bath, needed to cool the superconducting cavity. The observed response of an OST is a complex, but reproducible pattern of oscillations. A small helium evaporation cryostat was built which allows the investigation of the response of an OST in greater detail. The distance between a point-like electrical heater and the OST can be varied. The OST can be mounted either parallel or perpendicular to the plate, housing the heat source. If the artificial quench-point releases an amount of energy compatible to a real quench spot on a cavity's surface, the OST signal starts with a negative pulse, which is usually strong enough to allow automatic detection. Furthermore, the reflection of the Second Sound on the wall is observed. A reflection coefficient R = 0.39 +- 0.05 of the glass wall is measured. This excludes a strong influence of multiple reflections in the complex OST response. Fourier analyses show three main frequencies, found in all OST spectra. They can be interpreted as modes of an oscillating circular membrane.

Affiliated with

Also associated with

No associations

Rating

On the Response of an OST to a Point-like Heat Source does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with On the Response of an OST to a Point-like Heat Source, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the Response of an OST to a Point-like Heat Source will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-377458