Basic Super Conductivity Apparatus

 

 

Superconductivity was discovered in 1911 and has since then developed into and important area of research with fantastic possible applications such as, frictionless bearing, high speed transport, and long lasting energy sources. ROMTEK Super Conductivity Apparatus has been developed to familiarize students with this unique phenomenon and to conduct experiments such as observation of Meisner effect, measurement of critical temperature, measurement of resistivity, measurement of critical current density, measurement of critical magnetic field and observation of reverse AC Josephson effect. The equipment contains the necessary electronics for measurements in a single console and enables the experiments to be performed quickly and conveniently.

Specifications 

1.

Superconductor Materials

(a)

YBa2 Cu3 O7; 90o Kelvin; perovskite based.

2.

 

 

 

 

Superconductors 

(a)

 

 

(b)

One No. of 1”dia, with voltage probe, current probe & Thermocouple Leads assembly contained in nonmagnetic, machined  housing,YBa2 Cu3 O7 ; 900  Kelvin; perovskite based.

One No. of 1” dia, loose, YBa2 Cu3 O7 ; 900  Kelvin; perovskite based.

3.

Rare Earth Magnets

(a)         

Cubical Magnet One No.

4.

Probes  

(a)

One No. of 4 Probes & Thermocouple Leads as already mentioned under ‘superconductor’s at 2 (a) & repeated here for sake of  completeness.

5.

Electronics Console

(a)

Constant Current Source

  :

0.000 to 0.500 A with 0.1% regulation and ripple 5 mA and 3 ˝ digit LCD digital display.

(b)

RF Source

  :

2MHz to 8MHz variable with 10 V P-P out put and 4 digit LED digital display of frequency.            

(c)

Thermocouple Reader

  :

From 1 micro Volt to   10.000 mV, with 4 ˝ LED digital display.

(d)

4 Probes Output Volts Reader

  :

From 1 micro Volt to 10.000 mV, with 4 ˝ LED digital display

(e)

Ohm Meter

  :

Digital Ohmmeter for PT 100/RTD & other resistance measurements, 3˝ digit , LCD to read up to 199.9 Ohms.

6.

Misc. Items 

(a)

Experiment Guide.

(b)

Elementary Cryostat.1

(c)

Non Magnetic tweezer.

7.

Experiments

(a)

Observation of Meisner Effect.

(b)

Measurement of Critical Temperature Using Meisner Effect, as also by direct resistance vs temperature measurement.

(c)

Familiarization with 4 probe measurements.

(d)

Observation of Frictionless Bearing.

(e)

Measurement of Critical Current Density.

(f)

Observation of Reverse Josephson Effect. 2

(g)

Optional Extra: Effect of Magnetic Field on Critical temperature..

8.

Optional Extra

(a)

Powerful 3” Electromagnet Optional Extra (required only if you want to perform magnetic field experiment.) 3    

9.  

 

Required in Lab

(a)

Liquid Nitrogen Source

 

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