Enhanced Super Conductivity Apparatus

Romtek Enhanced Superconductivity Apparatus has been introduced after seeing the popular response to our Basic Superconductivity Apparatus introduced 3 years back. Thanks to the introduction of the apparatus, more & more students are experimenting with superconductivity and who knows, India may become the place of a breakthrough in this technology. The Suspension / Levitation effect showing Suspension of superconductor below a Neodymium magnet was accidently discovered by Huang & Peter of Lockheed & NASA respectively. Romtek has included a special Enhanced Flux Pinning Disk (EFP) in the Kit to show this effect. The US Navy designed an experiment called SMES (Superconductive Magnetic Energy Storage), whereby a current was induced in a superconductivity ring & shown to decay with a life time of the order by 10 23 years!  This experiment can be performed in the Romtek Enhanced Superconductivity Apparatus with material provided in here. Magnetic Susceptibility experiment is based on the expulsion of magnetic field by superconductor. Materials provided in the kit enable measurement of critical temperature based on susceptibility measurements as also computation of magnetic susceptibility of superconductor. These measurements are more accurate than those based on Meisner Effect.

Specifications:

1.       Superconductor      : YBa2 Cu3 O7 ; 900  Kelvin; perovskite based.

2.       Superconductor Disk :  

(a)       One No. of 1” dia, with voltage probe, current probe &  Copper Constantan Thermocouple Leads bonded and assembly contained in non-magnetic, machined housing.

(b)        One No. of 1” dia, loose,

(c)        One No. ½’’ dia Enhanced Flux Pinning disk.

3.   Rare-Earth Magnets :

(a)        Cubical Levitation Magnet

(b)        Cylindrical Levitation Magnet

(c)        Flux-Pinning Magnet

(d)        Toroid Induction Magnet

4.       Probes  :

                  (a)    One set of 4 Probes & Thermocouple leads as already mentioned in 2(a)

                          & repeated here for sake of completeness.

(b)       One No. of Susceptibility probe built around 0.5”x 0.5”  Superconducting  rod with             

        thermocouple also attached.

5.       Electronics Console:

1.

Constant Current Source

:

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

2.

RF Source

:

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

3.

Thermocouple Reader

:

From 1 microvolt to 19.999 mV, with digital display.

4.

4 Probes Output Volts Reader

:

From 1 microvolt to 19999mV, with digital LED display.

5.

Susceptibility Signal Generator

:

1000 Hz, sine wave.

6.

AC milli Volt meter

:

One No. for Susceptibility expt.

7.

AC milli Amp meter

:

One No. for Susceptibility exp.

8.

Ohm meter

:

Digital 3-1/2 digit LCD 100.0 ohms for PT 100/RTD & other resistance measurements.

9.

Operating power

:

230/115 V_+ 10%, AC.

10.

Optional at extra cost Required only in magnetic field experiment

:

Electromagnet with Power Supply.

11

Required in Lab

:

Liquid Nitrogen Source.

Experiments:

1.

Meisner Effect.

6.

Measurement of Critical Current Density

2.

Measurement of Critical Temperature Using Meisner Effect.

7.

Observation of Reverse Josephson effect.

3.

Familiarization with 4 Probe

8.

Optional Extra :  Effect of Magnetic Field on Critical temperature.

4.

Frictionless Bearing.

9.

Suspension/Levitation

5.

Superconductivity Energy Storage Experiment.

10.

Magnetic Susceptibility Experiment.

 

 

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