LOFTREK Cognition Architecture

CERN Antimatter Facility — Interactive Digital Twin

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Beam Simulation

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Process Info

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CERN Antimatter Deceleration Facility R6ANIMATED

AD + ELENA Complex — Building 193 — Interactive Simulation

Facility Parameters

Facility Elements

AD Dipole magnets (24)
Quadrupole magnets
Experiment zones (7)
Beam transfer lines
AD ring beam path
ELENA ring beam path
Concrete shielding (2.4m)

Simulation

Antiproton beam (AD)
Antiproton beam (ELENA)
Beam transfer pulse
Cryo helium flow
Experiment receiving beam

Advanced Systems

SHM sensors (112)
Rescue caches (6)
Air springs (28)
GaN modules (200)

Finding Severity

CRITICAL (70)
HIGH (156)
MEDIUM (152)

Overview Mode
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Antiproton Deceleration Process

CERN AD/ELENA Complex

1
Antiproton Production
26 GeV/c protons from the PS hit an iridium target. Antiprotons are produced at 3.57 GeV/c — only ~5×10⁷ per pulse are captured by the magnetic horn.
p: 26 GeV/c → p̄: 3.57 GeV/c
2
AD Ring Injection
Antiprotons are injected into the AD ring (circumference ~182 m). The ring is a C-shape racetrack: 4 arcs (R=17.42 m) + 2 long straights (25.18 m) + 2 short straights (11.29 m).
Injection: 3.57 GeV/c
3
Stochastic Cooling (1st stage)
RF pickup plates on straight sections detect particle deviations. Correction signals are sent via cables across the ring (faster path than the particles). This reduces beam emittance at multiple frequencies.
At 3.57 GeV/c — emittance reduction
4
Deceleration Cycle 1
RF cavities reduce momentum from 3.57 GeV/c to 2 GeV/c.
3.57 GeV/c → 2 GeV/c
5
Electron Cooling (at 2 GeV/c)
A cold electron beam co-travels with the antiprotons. Coulomb collisions transfer heat from antiprotons to electrons, further reducing emittance.
At 2 GeV/c — emittance reduction
6
Deceleration Cycle 2
RF cavities reduce momentum from 2 GeV/c to 300 MeV/c.
2 GeV/c → 300 MeV/c
7
Stochastic Cooling (2nd stage)
At 300 MeV/c, another round of stochastic cooling further tightens the beam before the final deceleration.
At 300 MeV/c — emittance reduction
8
Deceleration Cycle 3
Final AD deceleration from 300 MeV/c to 100 MeV/c for extraction.
300 MeV/c → 100 MeV/c
9
Extraction to ELENA
Antiprotons are ejected from the AD via a transfer line into the ELENA ring (circumference ~30.4 m, hexagonal geometry).
Transfer at 100 MeV/c
10
ELENA Deceleration
ELENA decelerates from 100 MeV/c down to 100 keV — a factor of 1000×. Electron cooling at 100 keV produces an ultra-cold beam.
100 MeV/c → 100 keV
11
Delivery to Experiments
ELENA distributes ultra-cold antiprotons via electrostatic splitter:
ALPHA (zone A) — Antihydrogen spectroscopy, gravity measurement
ASACUSA (zone A) — Antiprotonic helium, antihydrogen beam
BASE (zone B) — Antiproton magnetic moment (precision)
GBAR (near ELENA) — Gravitational behaviour of antihydrogen
AEgIS (zone A) — Antihydrogen gravity interferometry
PUMA (future) — Antiproton interactions with radioactive nuclei
12
Cycle Timing
Full AD cycle ~110 s. ELENA sub-cycle ~20 s. Beam is shared between experiments via electrostatic splitter.
Cycle: 110 s | ELENA sub-cycle: ~20 s

Beam Path Schematic

3.57 GeV/c
Phase Idle
Energy 3.57 GeV/c
Particles ~5×10⁷
Cycle 0.0 / 110 s