Gazing upon this silent giant, one might not guess its profound impact. This is the Accélérateur LINAC Monument Historique. It is a linear accelerator that once propelled scientific discovery. Today it stands as a monument. It reminds us of humanity’s quest to understand the universe.
The Accélérateur LINAC is preserved as a monument historique. It was once part of the ALICE experiment. ALICE researched heavy ion collisions. This specific LINAC was dismantled in 1987. It has been listed as a monument ever since.
The Accélérateur LINAC sits on the lawn between building 100 and Rue Jean Teillac. It is always accessible whenever the campus is open. An information panel is located on site. Documents are visible through the glass protecting the accelerator.
The website explains its function in a simplified way. It introduces major milestones. These milestones are in the discovery of particle beams. The milestones also cover the evolution of accelerators. A film details the history of the ALICE laboratory. It explains how the LINAC enabled heavy ion collisions. It was a world first. You can find the LINAC’s location on Google Maps. Simply search for “linac monument historique”.
This linear accelerator dates back to the 1970s. It is exhibited on the lawn of building 100. It is housed under a glass roof. Explanations are provided for visitors. It was classified as a historic monument in 1989.
The Accélérateur LINAC enabled scientists to collide heavy ions. It was a groundbreaking achievement. Imagine the energy unleashed within this machine. Consider the data collected. The Accélérateur LINAC helped unlock secrets of matter.
The Accélérateur Grand Louvre d’analyse élémentaire (AGLAE) is also in Paris. It is a particle accelerator. It resides in the Louvre museum. AGLAE analyzes artworks. It identifies trace elements within them. It is the only particle accelerator solely dedicated to cultural heritage.
AGLAE uses a Pelletron 2MeV electrostatic accelerator. The American company, National Electrostatics Corporation, built it. AGLAE has two sources. One is a Duoplasmatron+ source. It produces hydrogen ions or protons. The other is an Alpha source. It produces Helium ions. These ions are two protons and two neutrons bound together. This produces protons with an energy up to 4 MeV. It also produces alphas up to 6 MeV.
AGLAE was installed starting in 1987. It was inaugurated in 1989. It is located 15 meters below the Louvre’s glass pyramid. AGLAE emits protons and Alpha particles. These are directed onto artworks. The collision products are detected. This analysis reveals the composition of the cultural items.
Techniques used at AGLAE include particle-induced X-ray emission. Gamma-ray emission spectrometers are also used. The data determines the atomic constituents. This includes trace elements.
AGLAE is undergoing an upgrade. The upgrade aims to produce a lower-power beam. More sensitive detectors will be used. This will allow 24-hour operation. It will reduce the risk of damage to paintings. Dr. Claire Pacheco directed AGLAE from 2011.
Standing here now, you’re connected to a legacy. It is a legacy of scientific exploration. The Accélérateur LINAC Monument Historique represents innovation. It also represents the preservation of knowledge. Take a moment to appreciate this monument. It stands as a testament to human curiosity.