Looking back across what resembles a mini Sahara desert atop a plinth, speckled with little coloured rods that wouldn’t look out of place in a Willy Wonka wonderland, we are struck by the sudden emergence of the silhouette of what will soon be our LOFAR station.
Last week saw the outset of the station layout in Birr, Ireland. The efforts were led by our surveyor from Astron, Edwin Busch and our very own Joe McCauley. We also had two willing students on-site, Aoife Ryan and Hannah Currivan. The mission, should they decide to accept it, was to place over 800 50cm plastic rods into the ground. Easy you might say? Far from it!
There were three different coloured rods for both the HBA and LBA fields. Each colour denoted a different function (cable exit, cable entry, trench position etc.). Some of the rods even had a specific number to indicate the number on HBA tile that would soon replace it. Let the games begin!
Edwin had the coordinates and he, along with his GPS range pole, directed us to each of our 800 positions throughout the two fields. Each rod had to be placed with centimetre accuracy. It became apparent all too quickly that the mission to “place” each rod in the ground was going to be the challenge of all challenges. Unfortunately our lovely mound of dirt on which the state of the art LOFAR station is to be built is predominantly small rocks, stone and compact dirt as opposed to the lovely sandy soils of the Netherlands where this method was perfected. Cue the power drill!! Hauling around a generator we drilled each of the holes in the ground, “placed” the correct rod and hammered it securely into the ground…800 times.
It was a tough four days, of blisters, hard hats and suncream, but it was so very worth it!! With the markers now in place we can look forward to the next LOFAR chapters full of trenching, cable laying and antenna building this summer in Birr.