S.T.A.R. Labs particle accelerator

"In the year 2020, you and your wife, Tess Morgan, successfully launched a particle accelerator that changed the course of history."

- Eobard Thawne to Harrison Wells

The S.T.A.R. Labs particle accelerator, nicknamed The Pipeline, is a device that was created by S.T.A.R. Labs. Following its destruction, it was eventually used as a prison to house numerous meta-humans that it had created. Eobard Thawne also used it as a backup hideout.

The Explosion


The particle accelerator was designed by S.T.A.R. Labs to power all of Central City with clean energy, however when they turned it on, something went horribly wrong, and the particle accelerator exploded, sending a huge shock-wave in to the clouds and through the entire city. It also created a lightning storm above the Central City Police Department, electrocuting Barry Allen and sending him in to a coma. The incident also supposedly caused the lost of lives of seventeen people and injured countless more.

Repurposing the accelerator
Eventually, after Barry Allen's team concluded that they couldn't keep killing meta-humans, they realized that the cavities in the particle accelerator's core chamber could contain the meta-humans' powers, and converted it into a makeshift meta-human prison. Each cavity uses a 8.3 tesla super conducting electromagnet on its barrier which makes the seal 100,000 times stronger then Earth's magnetic field, which means that it can hold meta-humans with super strength.

The Pipeline
After The Flash defeated Kyle Nimbus, he was imprisoned in the Pipeline and became its first inmate.

Tony Woodward was imprisoned after being defeated by Barry as well. He was released by Eobard Thawne shortly after his initial imprisonment to combat Farooq Gibran when he broke into S.T.A.R. Labs to find Wells. Gibran killed Woodward, but after Gibran himself was killed, his corpse was put into a cell, where Wells extracted some of his blood to find out how he took Barry's powers.

After making his presence known in Central City, Roy Bivolo was defeated by the combined forces of The Flash and The Arrow and imprisoned in the Pipeline as well.

Hartley Rathaway was briefly imprisoned here before breaking out. As an apology for allowing Hartley to escape, Cisco specially modified Shawna Baez's cell with mirrored glass to prevent her from teleporting out.

After he traveled back in time to stop Mark Mardon's tidal wave from destroying Central City, Barry used his knowledge of future events to find Mardon and imprison him in the Pipeline before he could do any real damage.

Jake Simmons was incarcerated here after his defeat by the Atom.

After impersonating many people and causing terror in Central City, Hannibal Bates was defeated by Barry and imprisoned in the Pipeline. However, he was freed by Eobard in exchange for impersonating him in order to set up Barry Allen's team, knowing he'd be killed. Following his kidnapping of Eddie Thawne, Eobard took him to a secret lair he'd set up underneath the Pipeline.

Eobard later had Grodd release a mind-controlled Wade Eiling on Central City. After Barry defeated him, the general went into a vegetative state and was locked up in the particle accelerator. However, after Grodd was defeated, the team released Eiling. That evening, Eobard left his lair underneath the accelerator and entered the Pipeline, turning it on with the "key" he had created in his lair.

Reactivation
The team soon realized that Thawne had slowly been rebuilding the Pipeline and hiding underneath it. He left his hideout, freeing Peek-a-Boo from her cell as he did so. The team managed to recapture Shawna and after they put her back in her cell, they also found Eddie. When they took him back up to the Cortex, they realized that Thawne was going to turn on the Pipeline again.

The team debated what to do with the imprisoned metas, as Barry didn't want to let them die when the Pipeline was reactivated. They decided to move the metas to Lian Yu and bring them to Ferris Air in a truck modified to block out their powers. Barry negotiated with Leonard Snart and his sister Lisa Snart to provide protection, and the two agreed. The team sedated the metas by spraying knockout gas into their cells, and placed them in a Ramon Shipping truck.

The metas awoke and began squabbling, with Mark Mardon in particular picking a fight with Kyle Nimbus. However the Snarts sabotaged the truck, and the metas escaped, with Mardon striking down the plane meant to take the metas to Lian Yu with a lightning bolt. In the ensuing battle, the metas battled with The Flash and his team; Simmons was seemingly killed when being shot by Leonard's Cold Gun, Nimbus and Shawna fled the scene, while Leonard recruited Mardon and Bivolo to the Rogues.

That evening, Thawne returned to S.T.A.R. Labs, but was "defeated" by the combined efforts of Barry, The Arrow, and Firestorm, and placed in a cell in the Pipeline, all only because he let himself lose because he wanted back into the Pipeline.

Known inmates

 * Henry Hewitt/Tokamak

Former inmates

 * Kyle Nimbus/The Mist (escaped during relocation)
 * Roy Bivolo/Rainbow Raider (escaped during relocation)
 * Shawna Baez/Peek-a-Boo (escaped during relocation)
 * Mark Mardon/Weather Wizard (escaped during relocation)
 * Hartley Rathaway/Pied Piper (escaped)
 * Wade Eiling/Goldfinger (released)
 * Eobard Thawne/Reverse-Flash (released; later erased from existence)
 * Jay Garrick/The Flash (released)

Deceased inmates

 * Tony Woodward/Girder (released an set as a distraction; killed in the process)
 * Farooq Gibran/Blackout (corpse kept inside a cell)
 * Jake Simmons/Deathbolt (shot during relocation; deceased)
 * Hannibal Bates/Everyman (released based on a deal; killed in the process of fulfilling his end of the deal)

Arrow
Season 2
 * "City of Heroes" (Mentioned)

The Flash
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Season 2

 * }}

The Flash: Season Zero

 * "The Big Finale"

Behind the scenes

 * The entrance to the particle accelerator's core chamber is marked as Entrance 52, a reference to DC's ongoing use of the number 52.
 * The design on the particle accelerator's door looks similar to Firestorm's logo from the DC comics.
 * In Eobard Thawne's original timeline, the particle accelerator opened in the year 2020.