The version of the interferometer you see in these photos cost an estimated £3600 and required several bespoke parts to be designed and created by our mechanical workshop. For each option where appropriate and subject to agreement, we have included these cad files. The CAD files can be found at the gwexhibit repository under the design folder.
Component | Supplier | Part Number / Order Details | Quantity | £ (Each) | £ Total |
---|---|---|---|---|---|
HeNe Laser + 12V supply | Lambda Photonics | LasosLGR 7650 and LGN 7465 | 1 | 700 | 700 |
2'' mirror mounts | Newport | SN200-F2K | 2 | 165 | 330 |
Dome | Talbolt Designs | 650mm outer diameter, 27mm flanges, | 1 | 91.5 | 91.5 |
Mirrors | Thorlabs | PF20-03-P01 | 2 | 79.56 | 159.12 |
Beamsplitter | Thorlabs | BSW27 Economy EBS2£53 | 1 | 245.57 | 245.57 |
PZT | Thorlabs | PK2FMP2 | 3 | 45.33 | 135.99 |
Lens (-50mm) | Thorlabs | LC1715-A | 2 | 32.32 | 64.64 |
Vacuum Post Holder | Thorlabs | PH50V.M | 2 | 24.72 | 49.44 |
1/2“ Post | Thorlabs | TR50/M | 2 | 3.89 | 7.78 |
Clamping Fork | Thorlabs | CF125 | 9 | 8.26 | 74.34 |
1” Post | Thorlabs | RS2P4M | 10 | 18.36 | 183.60 |
1/2 Post adapter base | Thorlabs | BE1/M | 2 | 7.11 | 14.22 |
Plastic Tube | The Plastic Shop | 25mm Diam | 1 | 15 | 15 |
Workshop Cost | 1 | 1475 | 1475 | ||
Total | 3546.20 |
To add electronic integration into the exhibit, three seperate circuits are required to do this. These allow for four custom gravitational wave signsals to be injected into the interferometer, for the types of signals LIGO, VIRGO and Kagra are likely to detect. Breakdowns for each small electronic circuit are provided separately.
Component | Supplier | Part Number / Order Details | Quantity | £ (Each) | £ (Total) |
---|---|---|---|---|---|
Arduino Nano | RS | 696-1667 | 3 | 19.01 | 57.03 |
Raspberry PI | RS | 137-3331 | 1 | 34.07 | 34.07 |
Webcam | RS | 125-4274 | 1 | 25.79 | 25.79 |
PZT Circuit | - | See below for detailed breakdown | 1 | ||
PD Circuit | - | See below for detailed breakdown | 1 | ||
LED Circuit | - | See below for detailed breakdown | 1 | ||
12V Supply | RS | 794-2796 | 1 | £44.15 | 44.15 |
Box | RS | 476-9696 | 2 | £4.34 | 8.68 |
Buttons | Arcade World | HIGH PROFILE 60MM ILLUMINATED ARCADE BUTTON | 4 | £2.88 | 11.52 |
Laser Supply | Farnell | 2451828 | 1 | 43.05 | 43.05 |
Total | 224.29 |
Component(s) | Quantity |
---|---|
220 Ω Resistor | 2 |
10 kΩ Resistor | 1 |
5.8 kΩ Resistor | 1 |
1 kΩ Resistor | 1 |
14 kΩ Resistor | 1 |
0.1 μF Capacitor | 1 |
47 μF Capacitor | 1 |
IN4148 Diode | 2 |
LT1677 Op Amp | 1 |
Component(s) | Quantity |
---|---|
12V 10mm LED | 4 |
1 kΩ Resistor | 4 |
4.7 kΩ Resistor | 4 |
BC478 Transistor | 4 |
This is a cheaper alternative to the inteferometer that we've used above. It will be compatible with the above circuits and the code used throughout the exhibit.
Component | Supplier | Part Number | Quantity | £ (Each) | £ (Total |
---|---|---|---|---|---|
USB Laser | Thorlabs | PL202 | 1 | 93.47 | 93.47 |
Laser Mount | Thorlabs | AD11NT | 1 | 18.26 | 18.26 |
Mirrors | Thorlabs | PF10-03-P01 | 2 | 40.19 | 80.38 |
Beamsplitter | Thorlabs | BSW10 | 1 | 26.18 | 26.18 |
1" Optic Mounts | Thorlabs | KM100 | 4 | 29.90 | 119.60 |
1/2" Post Holders | Thorlabs | PH50E/M | 6 | 19.48 | 116.88 |
1/2" Posts | Thorlabs | TR50/M | 6 | 4.01 | 24.06 |
Post Clamp | Thorlabs | CF125C/M | 6 | 8.77 | 52.62 |
Breadboard | Thorlabs | MB3030/M | 1 | 120.15 | 120.15 |
1" Lens Mount | Thorlabs | LMR1/M | 2 | 11.77 | 23.54 |
1" Lens | Thorlabs | LC1715-A | 2 | 24.15 | 48.30 |
Total | 723.44 |