CERN Successfully Transports Antimatter by Lorry in Historic World First
Geneva, Saturday 28 March 2026
In a historic first, CERN scientists successfully moved 92 volatile antiprotons across their site by lorry this week, enabling future high-precision studies into the universe’s matter-antimatter imbalance.
Engineering a Cryogenic Marvel
The successful relocation of 92 antiprotons relied on a bespoke piece of high-tech systems and materials (HTSM) hardware known as the BASE-STEP trap [1]. Developed by the Baryon Antibaryon Symmetry Experiment (BASE) collaboration, this portable Penning trap is a marvel of advanced cryogenic engineering [1][2]. To prevent the antimatter from annihilating upon contact with ordinary matter, the system suspends the antiparticles in a vacuum chamber using a sophisticated array of electric and magnetic fields [1][2]. According to CERN physicist Stefan Ulmer, the internal pressure of this trap is superior to that of the interstellar medium, making it the highest quality vacuum on Earth [2].
The Logistics of a Volatile Cargo
The highly anticipated transport, which was five years in the making, took place earlier this week on Tuesday, 24 March 2026 [2][3][6]. Antiprotons, initially created by colliding protons against an iridium target, are notoriously difficult to harvest; the capture rate is a mere one in a billion [2][3]. After accumulating the 92 antiprotons using CERN’s Antiproton Decelerator (AD) and Extra Low Energy Antiproton ring (ELENA), the team loaded the BASE-STEP trap onto a standard lorry [1][2]. The vehicle completed a 10-kilometre route across the CERN facility near Geneva in 30 minutes, maintaining an average pace of 20 kilometres per hour, while reaching a maximum speed of 47 kilometres per hour [2].
Escaping the Magnetic Noise
The primary motivation behind this complex logistical exercise is the pursuit of unprecedented measurement precision. According to the laws of fundamental physics, the Big Bang should have generated equal quantities of matter and antimatter [1][3]. Yet, the observable universe is overwhelmingly dominated by ordinary matter, presenting a profound asymmetry that continues to baffle scientists [1][6]. To solve this mystery, physicists must compare the intrinsic properties of protons and antiprotons, such as their magnetic moments, with extreme exactitude [1].
Democratising Antimatter Research
This week’s successful intra-site transport serves as a crucial stepping stone for far more ambitious journeys. CERN intends to eventually deliver antiprotons to high-precision laboratories across Europe, including Heinrich Heine University (HHU) in Düsseldorf, Leibnitz University Hannover, and potentially facilities in Heidelberg [1][4][6]. The journey to Düsseldorf alone spans 700 kilometres and will take an estimated eight hours to complete [1][2][3]. To sustain the 8.2 Kelvin environment for the duration of such international transits, engineers are currently developing a more robust electric generator to power an onboard cryocooler [1][3].