Revision as of 08:40, 9 April 2019

Visit 2019-04-08

We were very happy to be able to Visit the VIRGO site given that one has to wait for many month to get an appointment.

Interferometer arms

The two arms are each 3 km long the laser beam is split and then passes each beam multiple times for a total of some 120 km of travel. Then the two beams meet again and in theory the waves should be perfectly "in sync" and black each other out. Only if some disturbance like a gravitational wave passing changes the distance travelled by the light then there will (hopefully) be a signal with a signal to noise ratio that will allow to talk analyze what might have caused the disturbance. In the past a few very interesting astronomical events have been detected this way. See e.g. GW150914

Our Guide Gary

Observation Building

Control room

Signal observation

Device status

Original Attenuator design (1987)

Mirror hold by silicon threads

Michelson Moreley Experiment

see https://en.wikipedia.org/wiki/Michelson%E2%80%93Morley_experiment

@@ Line 2: / Line 2: @@
 * http://www.virgo-gw.eu/
 = Visit 2019-04-08 =
+We were very happy to be able to Visit the VIRGO site given that one has to wait for many month to get an appointment.
 == Interferometer arms ==
 [[File:20190408_155145.jpg|800px]]
+The two arms are each 3 km long the laser beam is split and then passes each beam multiple times for a total of some 120 km of travel. Then the two beams meet again and in theory the waves should be perfectly "in sync" and black each other out. Only if some disturbance like a gravitational wave passing changes the distance travelled by the light then there will (hopefully) be a signal with a signal to noise ratio that will allow to talk analyze what might have caused the disturbance. In the past a few very interesting astronomical events have been detected this way. See e.g. {{Link|target=GW150914}}
 == Our Guide Gary ==
 [[File:20190408_160543.jpg|800px]]

Difference between revisions of "Virgo"