User:David J Weiss/Notebook/notes LightSpeed

Speed of Light Notes

In this lab we will try to determine the speed of light by means of a light pulse and a light detector by measuring the TOF(Time Of Flight) of the light when it leaves the source and gets detected by the photomultiplier.

Equipment

The equipment is as follows:

• Tektronix Oscilloscope (Model TDS 1002)
• Bertan Power Supply (Model 215, 3000V, 5mADC)
• Canberra Delay Module (Model 2058)
• Ortec TAC/SCA Module (Model 567)
• Harshaw NIM Bin (Model NQ-75)
• Harrison Laboratories Power Supply (Model 6207A, 160V, 0.2A)
• Photomultiplier Tube (PMT)
• LED circuit
• BNC Cables

Safety

The major safety concerns are as follows:

• Human Safety the main concern is for the electricity due to the electrical equipment we are using the Harrison Power supply for example has enough volts and amps to cause serious electrical shock to an individual which could potentially ruin your day, in addition there are quite a few things that plug into the wall and draw power and current which could cause problems so be careful when using electricity
• Be careful about damaging the equipment. The photomultiplier for example can be damaged quite easily especially when plugged in never expose it to sunlight while operating it this can potentially ruin it due to the fact that it is very sensitive to light and is designed to detect very low intensity light and when exposed to light that has intensity grater that it is designed to operate with it will burn out and destroy the equipment. Also make sure you are operating at the electrical equipment with in its operating specifications as not to cause any harm to each individual piece of equipment.

Data

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References

Dr Golds Lab Manual

David's Home

David's Notebook

Physics307L:Labs/Speed of light

Summary Speed of Light