Hej! Finally, the first muon detector is ready, and we will receive it in the following weeks. Here is a picture of the flat box, which is 10 cm high and 3 m in diameter, and which is quite a challenge to construct for the first time! Now we are getting excited to receive and start operating…
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See some ALTO events in this video!
Hej! Here are some events seen in the prototype setup at Linnaeus University in Växjö. Thanks to Jean-Pierre we have a super event display! We are still waiting for the final scintillator detectors, and as you may see, one Cherenkov tank is not active, as we need to replace the photomultiplier. Most of the events…
Come and hear about the ALTO project status at Astronomins Dag och Natt 2018!
https://lnu.se/mot-linneuniversitetet/aktuellt/kalender/2018/astronomins-dag-170923/ http://www.astronominsdag.se/vaxjo
Production of the muon detectors started!
Hej! We are happy to announce that the muon detectors of the ALTO prototypes are currently under production in TBS Yard AB! We look forward to receiving them so that we can start to operate these together with the water Cherenkov tanks at the prototype site. Picture below from Lars Tedehammar.
1242 water cisterns will examine radiation from space
Hej! Here is a News Item on the Linnaeus University website containing a time-lapse video tracking the prototype construction progress (between January and June): https://lnu.se/en/meet-linnaeus-university/current/news/2018/1242-water-cisterns-will-examine-radiation-from-space/ And in Swedish: https://lnu.se/mot-linneuniversitetet/aktuellt/nyheter/2018/1-242-vattentankar-ska-undersoka-stralning-fran-rymden/ Enjoy!
Scintillators taking data together with the Cherenkov detectors
Hej! Waiting for the final large ALTO scintillator detectors which we now ordered, in order to do some tests, we equipped the prototype site with smaller plastic and liquid scintillators recycled from another older experiment in France. Here below in the picture Jean-Pierre and Satyendra are installing a liquid scintillator box (in grey) at the…
Data taking with ALTO water Cherenkov tanks ongoing since May the 25th
Hej! With a bit of delay, we are now updating the status of the ALTO prototype project on our Blog. On May the 25th our two water tanks were completely filled with water and the data taking started at 17:00 the same day. So now we are smoothly taking data since more than three weeks….
Filling of Cherenkov tanks with water started this morning!
Hej! This morning the city council employees helped us in setting up the water filling process. As usual, people are extremely professional here, and everything went perfectly fine. What we are doing now is a partial filling (of about 1 m of depth), so that we can test a couple of different photomultiplier configurations. When…
First air-Cherenkov coincidence event between ALTO tanks with the full DAQ chain!
Hej! Today Jean-Pierre and Michael installed all the Data Acquisition System (DAQ) in our electronics box and the network has been connected by the IT at the University. So finally at about 18:00 CET we were able to see the first signals coming from the ALTO tanks in our control room. These signals are generated…
Photomultipliers installed in the water tanks and work on electronics and network ongoing
Hej! This weekend we took advantage of the absolute calm of the campus to install the photomultipliers in the (empty) tanks. Everything went well, Michael and Jean-Pierre succeeded in positioning the devices and install all the cables for the signals, for the slow-control, for the power. In the meantime we are setting up all the…