The first array of twelve 光环s was constructed by order of Master Builder Faber circa 101,000 BCE with the intent of being an ultimate weapon, one that would secure the preeminence of the Builder rate in 先行者 society. Later, the weapons would be refined further and a new array of six smaller and significantly more lethal rings was constructed. Eventually, eleven were destroyed and/or lost while the remaining seven were used by the 先行者s as a last resort when combating the parasitic [[洪魔]]. All sentient beings in the galaxy were killed, robbing the 洪魔 of hosts and starving it to death.
In addition to serving as weapons of last resort, 光环 装置 are also research facilities dedicated to containing and studying many different kinds of life forms. The life forms that were hand-selected by the 智库长 included marine life, fauna, and land vertebrates. With the Master Builder's permission, the Librarian would research each animal to detect if their bodies reacted to 洪魔 infection. The research on the animals would be more deeply analyzed if they did become infected. The Librarian's studies also helped determine if the rings could be used to repopulate the galaxy as part of the Conservation Measure.
As it is known in modern times, the 光环 Array is a network of seven ring-shaped megastructures created by the 先行者s, designed to exterminate all sentient life within the Milky Way galaxy. Built following the [[Human-先行者 War]], these ringworlds were later used as a last resort against the 洪魔, a parasitic extra-galactic species that threatened to consume every sentient life-form in the galaxy. By activating the rings, the 先行者s wiped out every sentient being in the galaxy, effectively starving the 洪魔 to virtual extinction, though specimens were kept in a number of 先行者 [[洪魔 containment facility|containment facilities]], including the 光环 装置 themselves。
A total of eighteen 光环 rings existed during the reign of the 先行者s; an older array of twelve 30,000-kilometer-wide rings produced by the greater Ark and six 10,000-kilometer rings, constructed at the newer lesser Ark. Of these, only seven survived to be included in the final Array. Most of the 光环s, including the two most well-known 光环 installations, Installation 04 and Installation 05, are deployed in orbit over large gas giants, though this is not the case with all of the rings; Installation 03 orbits a rocky planet. Installation 04 maintained an atmospheric mining facility in Threshold's atmosphere until it was destroyed by the 星盟.
Though separated by thousands of light-years, the 装置 are networked together and capable of remote activation at the Ark, their extragalactic construction foundry. Each 光环 installation has a maximum effective range of 25,000 light-years in every direction. The method utilized by the array to conduct this "mass sterilization protocol" involves the superluminal conveyance of a burst of cross-phased super-massive neutrinos, tuned to emit a harmonic frequency that destroys the nervous system of any life form within range. Simpler organisms lacking a neural system are unaffected, along with inanimate structures. Precursor technology, however, is extremely susceptible to damage from the 光环 effect due to its quasi-living neural physics composition.引用错误：没有找到与
<ref>标签 The array has come close to activation three times since; Installation 04 was almost activated by the Master Chief, Installation 05 was activated by Commander Miranda Keyes at the behest of the Jiralhanae Chieftain Tartarus, and Sergeant Johnson was forced by the Prophet of Truth to activate the Array from the Ark. None of these attempts were successful; the first was stopped by Cortana, while the second and third were halted by UNSC and Sangheili intervention. A replacement 光环 for the destroyed Installation 04 was successfully activated outside of the galaxy, eliminating the 洪魔 massed at Installation 00, but it was incomplete and thus not networked to the rest of the Array.
Each of the 光环 装置 in the final Array is given a designation number, from 01 to 07, and is overseen by a single monitor. The monitors are given control of the Installations' Sentinel automatons, from Aggressors to Constructors and Enforcers, and are responsible for containing the 洪魔 test subjects in their [[洪魔 research facility|research facilities]] and protecting the 光环 from intruders.
The Array also encompasses Installation 00, an extragalactic construction facility that can create replacement 装置 in the event that one is destroyed. All 光环s can also be remotely activated from the Ark without being subjected to their effects, as the megastructure is out of the Array's range. The 先行者s also built shield worlds as a means to escape the effect without having to leave the galaxy. 模板:Clear
第一个光环s were constructed by the 大架构师模板:Faber and his Builders in the millennia after the [[洪魔]] was first encountered in the Milky Way, only to eventually retreat, seemingly due to early humanity's efforts. The most extreme faction of Builders, which at the time controlled the Ecumene Council, claimed that more extreme measures should be used to protect the galaxy against a possible 洪魔 resurgence and proposed building the Array for this purpose. The initial iterations of the weapon system that would eventually become 光环 did not share the circular shape of the final installations.
However, at this point, the 智库长 went to the Council and invoked the Mantle, stating the the 光环s should be used as biological preserves in the Conservation Measure, a plan to repopulate the galaxy should the Array ever be activated. The Council approved her request, and ordered that the 光环 装置 be constructed to have a range of natural environments for the Lifeworkers to preserve their biological specimens in. The Builders also agreed, seeing the inclusion of biological preserves as an effective means of competing with the Didact's shield worlds which incorporated similar measures. However, the Master Builder later altered the initial plan, and his researchers began to use these specimens for a series of brutal experiments involving 洪魔 infection.
Twelve 光环s, each 30,000 kilometers in diameter, were originally commissioned by Master Builder Faber and constructed by the guild of Bornstellar's father at the greater Ark, the first Ark installation to be constructed. Only one of these original rings ultimately survived to be used in the 先行者s' final plan; this ring was designated Installation 07. Later on, an improved, separate array of six 装置 was constructed at the lesser Ark, although the construction of the second Ark and its more powerful 光环s was delayed by the Council for some time to prevent the Builders from becoming too powerful.
In the later stages of the construction of the first 光环s, a Builder named Maker-of-Moons was assigned to improve upon their designs. The first test deployments had proven the original rings to be unstable and too large to be practically deployed, generating enormous particle reconciliation debt when moved. The original Ark also had several flaws, including the inability to construct smaller installations. Although initially reluctant to admit these defects, the Master Builder, informed by Maker's analysis, commissioned a new Ark and a series of new, more efficient rings several millennia after the first 光环s were made; the Builders promoted this as a means to save even more species while being able to create more 光环s. The new Ark, known as the lesser Ark or Installation 00, and its six new 光环s were constructed in secret, their location known only to the Master Builder.
The first test of a 光环 installation was conducted by Mendicant Bias, who fired Installation 07 in the system of Charum Hakkor and Faun Hakkor on a low power setting, destroying all of the sentient life on the latter planet and inadvertently releasing the Primordial, an extant Precursor entity, from captivity on the former planet. Mendicant Bias then brought the released being to the 光环 for study and began a 43-year-long interrogation of it.
Following the use of Installation 07 by Master Builder Faber to suppress a rebellion on the San'Shyuum homeworld of Janjur Qom, the other eleven 光环 装置 were taken to the 先行者 Capital during the tribunal against Faber, where it was to be decided whether to decommission them. However, in the midst of the trial, Mendicant Bias, turned rampant by the Primordial, appeared with Installation 07, which had gone missing since the San'Shyuum rebellion, and assaulted the Capital. The AI attempted to seize control of the remaining 光环s and fire them, but was only able to control five out of the twelve. One of those five was destroyed by the combined tidal forces of the Capital, the firepower of local 先行者 fleets, and the stress of a recent slipspace transition. The seven 光环s that Mendicant Bias was unable to control were recalled to Installation 00 via slipspace jumps, yet only [[Omega 光环|one]] escaped before the portal collapsed, with the other six breaking up in slipspace.
Installation 07 jumped into a distant system on a pre-designated destructive collision course with a planet—a security measure put in place in the event that it fell out of 先行者 control. The installation was eventually reclaimed by the IsoDidact's forces, and it survived the passage of the planet despite taking heavy damage. A significant amount of the ring's superstructure was discarded, reducing its size to 10,000 kilometers, in order to allow it to perform a successful slipspace jump to the greater Ark. The installation's surviving biological specimens were transported on the Ark and the 洪魔 outbreak on the ring was contained. The ring was refitted to enable it to function in concert with the six final 光环s and deployed to its final station in the galaxy; the distribution of the final 光环 Array would follow several years later.
During the battle at the Capital and the years that followed, all but one of the original twelve rings—[[Omega 光环]]—apart from the repurposed Installation 07 were hunted down and destroyed by the 洪魔. In the final hours of the 先行者-洪魔 war, the ecumene's leadership retreated to the greater Ark, also home to Omega 光环. When a [[Battle of the greater Ark|洪魔 attack]] became imminent, it was decided that the IsoDidact go to the lesser Ark where he would deploy and fire the final 光环 Array. Before relinquishing the coordinates to his secret Ark, the Master Builder met the IsoDidact in the control room of Omega 光环 and fired the ring, obliterating a small portion of the star roads laying siege on the Ark and cleansing the Large Magellanic Cloud of life.
The 洪魔 and the 星路 destroyed both Omega 光环 and the greater Ark, but the IsoDidact managed to escape to Installation 00 to fulfill his mission. Arriving at the lesser Ark, the IsoDidact had the rings' Index collection distributed to their respective 装置 aboard a Lifeworker vessel over the Ark. The installations' primary monitors were also formally given their assignments to their final posts. Each monitor also received a new name and numeric designation, each intended to serve as a form of memorial to the 先行者s. With the assistance of Offensive Bias, the IsoDidact deployed the remaining six 光环s from the Ark's Citadel. Together with Installation 07, these 装置 comprised the final 光环 Array of seven rings.
As Mendicant Bias and the 洪魔 prepared their final assault on the lesser Ark in order to stop the firing of the 光环s, the IsoDidact activated the Array. Installation 04 was first in the Array to fire, with the others following sequentially as their fields intersected. The pulse covered the entire galaxy, killing all sentient life within range and destroying the Precursors' neural physics architecture, including the Domain the 先行者s used to hold dear. Whether the pulse would destroy 星路 and other Precursor artifacts in faster-than-light transit was uncertain even to the 先行者s themselves, due to the largely unknown mechanisms of Precursor superluminal travel. However, their total destruction seems apparent from the fact they were no longer in evidence when the 先行者s repopulated the galaxy.
The seven 光环s then remained relatively dormant for approximately one hundred thousand years, though at least one of them experienced a major 洪魔 outbreak, and at least one have experienced brief visits by other species, including a major crash-landing in 40,000 BCE.
The Array's activation caused catastrophic damage to ecosystems across the galaxy, with innumerable species both sentient and non-sentient rendered extinct. The dissolving of dead bodies thanks to solute eventually showed up on the fossil record, and was labeled by scientists as the Ross-Ziegler Blip. This curious gap was dismissed as an anomaly caused by spatial distortion until humanity discovered the Array in 2552. Several species indexed by the Library Project did not survive reintroduction to their homeworlds, and those that did were all reverted to a Tier 7 technological state. The mostly uneventful period starting after the firing of the 光环s was known as the dark time.
The 星盟, a theocratic multispecies alliance, was founded on the misguided belief that the 光环 Array was actually the source of a "Divine Wind" that allowed the 先行者s to transcend the physical. By activating the Array, they too could embark on this "Great Journey" and join the 先行者s in godhood.
Eventually, the stellar coordinates of Installation 04 were discovered through the combination of a crystal artifact on Sigma Octanus IV and a [[Babd Catha 先行者 complex|huge 先行者 artifact]] buried under the surface of Reach. The coordinates were utilized by the 模板:UNSCShip's shipboard AI Cortana to escape from the Fall of Reach. The cruiser arrived over the Installation's orbit and was subsequently shot down by Covenant ships. Most of the ship's combat personnel escaped and made landfall on the artificial construct, triggering the Battle of Installation 04.
During their investigations on Installation 04, the Covenant encountered a [[洪魔 containment facility]] and unknowingly released the dormant 洪魔; they quickly, but only partially, reestablished containment. Soon, a squad of Marines led by Captain Jacob Keyes accidentally broke quarantine again, expecting to find a large Covenant weapons cache. The human-waged guerrilla war quickly turned into a massive four-way battle between UNSC forces, the Covenant, Sentinels led by 343 Guilty Spark, and the 洪魔.
The battle finally culminated when 斯巴达战士 John-117 detonated the fusion engines of the Pillar of Autumn on the surface of the Installation, which compromised the structural integrity of the ring. The gravitational momentum and inertia still perpetuating the ring in orbit around Threshold then tore the ring apart. The remains of Installation 04 were scattered as debris in space. The explosion sent massive chunks of the ring careening into Basis; the moon suffered a constant bombardment of debris from the ring after its destruction.
Later, the Covenant discovered a third 光环, Installation 05. On this 光环, the 洪魔 had already been released and much of the ring had been compromised, including its monitor, 2401 Penitent Tangent. Soon, another four-way conflict began. The battle ended in the 洪魔 manifesting a Gravemind and successfully escaping the ring aboard infected Covenant ships. The ring was nearly activated by Tartarus, the Chieftain of the Jiralhanae, but Commander Miranda Keyes pulled the Activation Index out of the installation's core at the last moment, causing all six functional 装置 to go into "standby mode", ready for remote activation from the Ark.
The human survivors returned to Earth and resumed their fight against the Covenant, who had uncovered a large structure on Earth, which they assumed to be the Ark. The Covenant landed the [[先行者 Dreadnought]] in the center of the structure, activating it. However, the structure was soon revealed not to be the Ark, but a generator of a portal to the actual Ark, a massive artificial world located outside the galaxy. Human and Sangheili forces proceeded through the portal to the newly-discovered installation to prevent the Covenant from activating the remaining 光环 rings remotely. Eventually, the Gravemind arrived at the Ark aboard High Charity, the Covenant's capital city, which had been turned into a 洪魔 hive. The hive crashed onto the installation, releasing the 洪魔.
Soon, 343 Guilty Spark, John-117, and Arbiter Thel 'Vadam discovered that the Ark had been constructing a new Installation 04, to replace the one which had previously been destroyed. This new installation was only days from being completed. The humans decided to activate the new ring to stop the 洪魔, resulting in the incomplete ring destroying itself, severely damaging the Ark in the process. 模板:Clear
By January 2553, the UNSC had begun an active search for the remaining 光环 installations, with the intent to decommission them. By at least July 2557, UNSC scientists were studying the Array for decommissioning, with facilities at 装置 03 and 05. Installation 00 was scouted by both automated probes and the ONI vessel 模板:UNSCShip, which was lost several days after its arrival. Installation 07 was discovered in early 2555, with an ONI research group stationed on the ring immediately afterward. A crisis occurred when it was discovered that Installation 07—as well as the other 光环s—were counting down to activation in five weeks from March 8, 2555. The activation countdown had been initiated by a human captured by 000 Tragic Solitude, the Ark's rampant monitor. In response to this threat, which was kept highly classified, a joint UNSC-Sangheili detachment embarked on a mission to the damaged Installation 00, as the Ark was believed to be the source of the countdown. Ultimately, the team was able to avert the 光环s' activation and the monitor was destroyed.
Later, the scientists studying Installation 03 located the Composer on the ring and accidentally activated it, causing them to become digitized. However, the sensor data left over from the incident led to the discovery of the shield world Requiem. Later, the Didact traveled to Ivanoff Station near Installation 03 to retrieve the Composer and used the device to harvest the essences of the entire research staff before heading for Earth. Meanwhile, Jul 'Mdama's Covenant faction and their Promethean allies attempted to take control of Installation 03 by using the Conduit to open slipspace portals across the ring, but the attack was repelled by a Spartan Headhunter.
A day later, after the Didact's defeat at Earth, the 先行者 and some of his Promethean forces fell on Installation 03 via a slipspace portal. SPARTAN-II Blue Team followed, resulting in a a skirmish fought on both Installation 03 and the Composer's Forge. The Forge's monitor, 859 Static Carillon, transported Installation 03 over the Forge for the Didact, who intended to use the ring to finally destroy humanity. However, the monitor instead allied with the Spartans due to his disagreements with the Didact and helped them defeat the 先行者. After John-117 disabled the 光环's failsafes, Static Carillon ejected the segment housing the control room, causing it to fall upon the Composer's Forge. The monitor then stabilized the ring and took it to an unknown location for repairs. 模板:Clear
The 光环s encountered in the modern times are 10,000 kilometers in diameter; this size is roughly similar to that of Earth, which is 12,756 km in diameter. While the original twelve 光环s had a diameter of 30,000 kilometers, concerns about their structural stability and transport led to the second series of rings being reduced in size. The surface of each ring is 318 kilometers wide, and 22.3 kilometers thick. The main structure of the ring is constructed of a superdense foundational material, with elaborate scaffolding and cantilever structures laid over it to support the artificial landmasses and the myriad tunnel networks and caverns that riddle the installation's internal structure. Many of these tunnels are transit conduits meant for use by the ring's Sentinels, though some of them can be traversed by humanoid beings.
The 光环 rings achieve their "gravity" through centripetal force. As the ring spins, centripetal force pushes all spinning bodies away from the center of rotation. The ring is uniform, and because of this, all points are the same distance from the center, therefore centripetal force applies evenly. This force also pushes objects on the surface of the ring away from the center of rotation, or pushes them down on the surface of the ring, translating into gravity. When the 模板:UNSCShip was detonated, it blasted a large mass from Installation 04; no longer a full loop, the centripetal force applied in much greater strength on the newly formed weak point, causing the ring to rip apart.
The 光环s are capable of repairing themselves to some degree, replacing damaged plates of foundation material and restoring biological sections. Some of the 30,000 km-diameter 光环s could also be reduced to a smaller size by shedding large portions of the foundation. In order to prevent the ring from falling apart during this process, it could generate a hard light hub with spokes which hold each of the foundation plates in place. However, the self-reduction process was far from perfect and made the original 光环s prone to instability and collapse. The newer 光环s are capable of safely ejecting small segments as well, as long as the process is overseen by a capable enough intelligence such as a monitor.
Each installation in the final array orbits a large, dense planet—most commonly a gas giant—which serves as a gravitational anchor. For example, Installation 04 and Installation 05 orbited Threshold and Substance, respectively, which are both large gas giants, while Installation 03 is anchored to a large rocky planet.
The 装置 are designed to be run by advanced artificial intelligence constructs specially assigned by the 先行者s. The highest intelligence on each installation is a single monitor. The monitor's task is to ensure that the installation's Sentinels, which range from Constructors to Aggressors and Enforcers, repair, maintain, and defend the ring from damage, contain 洪魔 specimens, and ensure that their own installation is ready to fire on demand, including running activation simulations. Monitors also have access to their respective installation's defensive system.
The Sentinels encompass a broad category of less intelligent constructs which serve virtually any purpose necessary to ensure that the 光环 functions properly and are capable of combating small 洪魔 outbreaks. Should a major 洪魔 outbreak occur, heavier automatons, such as the Enforcers and Sentinel Majors will be created. In the meantime, Constructors are also created to ensure that the 先行者 structures on the Installation are kept in optimal shape, and that they are not damaged by conflict or weather.
Save for the monitor, all automatons can be constructed at specialized production facilities that float high in the 光环's atmosphere. They seem to have access to copious amounts of materials for constructing an almost indefinite number of automatons.
Although first and foremost designed as weapons of mass destruction, the 光环s are also designed as habitats for transplanted lifeforms, including but not limited to humans. After Master Builder Faber's plans were co-opted by the 智库长, the 光环s were given terrestrial surfaces to support catalogued specimens. The Master Builder intended to allow these specimens to be infected by 洪魔 forms contained on the rings, and then subsequently terminated in order to test the 光环s' effectiveness. that were both deciduous and coniferous, swamps, and cold, snow covered tundra environments.
Installation 00 had climate ranging all the way from tundra, to forest, to desert.
While the terrain of a 光环 ring may appear to be naturally formed at first glance, it is actually artificially constructed. Strato-Sentinels extract raw materials from the source, process them in transit, and deposit building materials at the Installation. Four huge terraforming factories then move across the face of the installation to "skin" it with landmasses and bodies of water. These factories also hold in the ring's nitrogen-oxygen atmosphere, which is then leaked out to the surface, eventually pouring through the superstructure, and tugged in place by centripetal force. The installation's buildings are then built by Constructors and Sentinels. An intricate layer of metallic panels is laid down several meters below the surface of the terrain, upon which rock, soil, and eventually vegetation is added. Slopes, hills and mountains can be created by sculpting these panels. Some features, such as landslides, are the result of time, and have been formed naturally. Others, such as the frigid conditions of the Quarantine Zone or the lake near the Temple on Installation 05 were artificially created. There are also numerous indigenous life-forms that live on the 光环s; these were brought on the 装置 as part of the Lifeworkers' conservation project.
每一个光环 has several assets that are uniform to all installations. Each contains a Control Room located somewhere upon its inner surface, from which a Reclaimer must manually insert the installation's Activation Index to activate it. Each also possesses a Library, a large structure protected by an energy shield, where the Index is housed and protected by Sentinels. The index itself is a semisolid holographic representation of the data needed to activate the ring, and can only be directly inserted successfully by a Reclaimer.
Installations also possess Cartographer facilities, which contain the complete, real-time record and schematic of the installation, including its inner passages and networks, to be used as a navigational reference for traversing the installation. [[洪魔 containment facility|洪魔 containment]] and [[洪魔 research facility|research facilities]] are also standard, used by the installation's monitor to conduct research on and observe the surviving 洪魔 specimens; these are protected by Sentinels to prevent an outbreak.
Installations also contain advanced teleportation grids, allowing instantaneous transportation for a Monitor or Reclaimer to any place on the installation. These grids cannot be controlled by the 洪魔, though the Gravemind was able to use that of Installation 05 by controlling 2401 Penitent Tangent. For Sentinels, the installation is riddled with tunnel and cave networks for access and transportation.
The 光环 装置 are also equipped with drive engines spaced along their rim. In the event of an emergency, a 光环 can maneuver itself to avoid damage from a collision or weaponry. While ideally moved through fixed portals, the rings are able to perform slipspace jumps under their own power. A failsafe measure implemented in the event of capture by hostile forces will transition the 光环 into slipspace and place it on a collision course with a planet or other celestial body, ensuring the weapon's destruction rather than allowing it to fall in the wrong hands. At the moment of Installation 04's destruction, at least one major fragment of the ring was moved into slipspace, likely as part of this failsafe.
光环s also possess hard light reinforcement to stabilize and protect them against tidal and gravitational forces from other objects. One of the most extraordinary systems possessed by the 光环s is their ability to lock entire sections of the ring, or, if necessary, the entirety of it, into reflective slipspace stasis. This suspends these sections in time and renders them invulnerable to damage from the outside. However, it also consumes an enormous amount of energy.
The seven 装置 in the final 光环 Array function via form of lethal radiation designed to kill all sentient life in the installation's three-dimensional radius of 25,000 light-years; when fired in concert with the rest of the Array, this sterilizing effect covers the entire galaxy.
When activated, the 光环 rings release a burst of cross-phased supermassive neutrinos. This burst of neutrinos is carefully tuned to possess a harmonic frequency, which destroys the nervous system of any macroscopic organism that possesses one, even one as rudimentary as a notochord, as shown in the aftermath of a low-powered test firing of a 光环 performed by Mendicant Bias in the system of Charum Hakkor. The 光环 effect is able to target and eliminate most forms of neural structures, from biological nervous systems to esoteric neural physics constructs, although the effect does not extend to artificial intelligences.
Simpler life forms that do not possess a neural system, such as microbes, fungi, algae, mosses, and traditional plants are unaffected. While organisms aboard the twelve older rings were safe from the 光环 effect itself due to its directional nature, any sentient being would still experience an uncomfortable sensation in the vicinity of the pulse.
Like virtually all 先行者 technology, the 光环s are powered by vacuum energy. When the main weapon is fired, vacuum energy is siphoned from local space-time to near-depletion. The pulse of the main weapon is amplified by a series of phase pulse generators and channeled toward the 光环's center. A concentration of energy collects into the hub of the installation, which, when the weapon is fully charged, blasts outward in all directions.
The radiation is propelled at superluminal speeds and will eventually propagate at a near-infinite velocity. This was known to generate causal paradoxes when the rings first fired, with two of the 光环s reporting pre-echoes of the combined activation before the rings had been fired. Once activated from Installation 00, all 装置 will cumulatively trigger one another as their radiation fields intersect, amplifying the effects of each individual 光环. The energy discharge covers the Array's effective range and cleanses it of all affected sentient life. Individual 光环s can also be fired independently from the rest of the Array; this is known as a "tactical pulse".
In the event a 光环's activation is canceled, a burst of energy is fired from the control center into the hub, causing the energy collected there to violently implode, then dissipate harmlessly.
The final 光环 Array, comprising the six smaller 光环s (and the reduced Installation 07) were designed to fire in all directions, within a spherical radius of 25,000 light-years; together, the rings were capable of killing all sentient life within three radii of the Milky Way's center. The original twelve 光环s were designed to fire laterally, generating a cone-shaped field with a maximum effective range of hundreds of thousands light-years. When fired from the greater Ark to the Large Magellanic Cloud, the blast was wide enough to cover the entire 14,000 light-year-wide satellite galaxy. The rings could also be fired on a lower power setting, cleansing specific planets or systems within a relatively small area of effect.
The nervous systems of all beings are targeted by the 光环s and destroyed, rendering them useless to the 洪魔; however, the 光环 effect does not disintegrate biomass, leaving the victims' bodies mostly intact. Left untreated, lifeforms killed by the pulse will decay in great masses, which could lead to ecological devastation spread by a miasma of rotten biomatter. Therefore, Lifeworkers sprayed target biospheres with a solute that would cause any animal killed by the Array to instantly decay into its component molecules, resulting in flash-desiccation. Due to the 先行者s' use of solute, 21st century paleo-archeological studies gave no indication of the mass extinction caused by the Array's firing. However, in 2332 the Ross-Ziegler Blip revealed a tiny aberration in Earth's fossil records.
Each 光环 ring can be activated individually by a Reclaimer, also placing the other 装置 in standby mode, or they can all be activated simultaneously from Installation 00. In the event of a major 洪魔 outbreak, an installation's monitor will seek out a Reclaimer if available, whom they will enlist to aid them. It will teleport them to the installation's Library and will assist the individual in retrieving the Index. The monitor then stores the Index within its data arrays for safe transportation, lest the Reclaimer fall prey to the 洪魔 before they can activate the installation. Once at the control room, the Reclaimer is given back the Index and must insert it into the Core in order to begin the activation sequence. At any point during the charging sequence, a Reclaimer is able to abort the firing by removing the Index from the Core. 模板:Clear
- The 光环s are remarkably similar to the eponymous megastructure of Larry Niven's Ringworld series. However, Niven's Ringworld encircles a large star, whereas the 光环s merely orbit planets, being much smaller than the former. The 光环s are also very similar to the Orbitals from Iain M. Banks' Culture series, though considerably smaller.
- In a 光环: Combat Evolved [[Pre-Xbox 光环|prototype]], Installation 04 had a section that was only partially constructed. This feature was dropped from the final game, though it inspired the design of the second Installation 04.
- The Prophet of Mercy once referred to the 光环 Array's pulse as a divine wind. This is a literal translation of kamikaze, suicide attacks carried out by Japanese pilots against Allied vessels near the end of World War II. Kamikaze aviators were willing to give their lives based on their fanatical devotion to defend Emperor Hirohito and the state. This is mirrored by the Covenant's quest to activate the 光环s and commit holy war in deference to their gods.
- [[光环: The Fall of Reach]] 模板:1st
- [[光环: Combat Evolved]]
- [[光环: The 洪魔]]
- [[光环: First Strike]]
- [[光环 2]]
- [[光环 Graphic Novel]]
- [[光环: Ghosts of Onyx]]
- [[光环: Uprising]] 模板:Mo
- [[光环 3]]
- [[光环: Contact Harvest]] 模板:Mo
- [[光环: The Cole Protocol]] 模板:Mo
- [[光环 Legends]]
- [[光环: Evolutions - Essential Tales of the 光环 Universe]]
- [[光环: Reach]]
- [[光环: Glasslands]] 模板:Mo
- [[光环: Combat Evolved Anniversary]]
- [[Terminal/光环: Combat Evolved Anniversary|Terminals]]
- [[光环: Primordium]]
- [[光环: The Thursday War]] 模板:Mo
- [[光环 4: Forward Unto Dawn]] 模板:C
- [[光环 4]]
- [[Terminal/光环 4|Terminals]]
- [[光环: Silentium]]
- [[光环: Escalation]]
- [[光环: Broken Circle]] 模板:C
- [[光环: Nightfall]]
- [[光环 2: Anniversary]]
- [[Terminal/光环 2: Anniversary|Terminals]]
- [[光环: New Blood]] 模板:Mo
- [[光环: Hunters in the Dark]]
- [[光环: Last Light]] 模板:Mo
- [[光环 5: Guardians A Hero Falls trailer|A Hero Falls]]
- [[光环 5: Guardians]]
- [[光环: Shadow of Intent]] 模板:Mo
- 光环: The 洪魔, page 38
- 光环 2, campaign level Gravemind
- [[光环 2]], campaign level The Great Journey, 343 Guilty Spark: "After exhausting every other strategic option, my creators activated the rings. They, and all additional sentient life in three radii of the galactic center, died, as planned."
- 光环: Silentium, page 237
- 光环 4, campaign level Composer
- 光环: Combat Evolved Anniversary, [[Terminal/光环: Combat Evolved Anniversary#Terminal 8|Terminal 8]] ("25,000 light years. That is the effective range of this installation.")
- [[光环: Combat Evolved]], level Two Betrayals, 343 Guilty Spark: "Technically, this installation's pulse has a maximum effective radius of twenty-five thousand light years."
- [[光环: Combat Evolved]], level The Library, 343 Guilty Spark: "Why the 洪魔 is, naturally, simply too dangerous to release, and mass sterilization protocols may again need to be enacted."
- 光环: Silentium, pages 234, 237
- 光环: Silentium, page 313
- 光环: Silentium, pages 326-327
- 光环: Silentium, pages 322-323
- 光环: Silentium, page 312
- "Conversations from the Universe"
- 光环: Combat Evolved Anniversary, [[Terminal/光环: Combat Evolved Anniversary|Terminals 5-6]]
- 光环 2, multiplayer level Burial Mounds
- Eleventh Hour reports - #5
- [[光环: The Essential Visual Guide]], page 14
- 光环: Hunters in the Dark, Chapter 2
- 光环: Glasslands, page 50
- [[光环: Hunters in the Dark]]
- 光环 4
- 光环: Spartan Strike, Operation C: Valiant Hammer
- 光环: Escalation, [[光环: Escalation Issue 9|Issue #9]]
- 光环: Escalation, [[光环: Escalation Issue 10|Issue #10]]
- 光环：冥冢, page 310
- 光环: The Essential Visual Guide, page 6
- 光环: The Fall of Reach, page 339 (2001)
- 光环: The 洪魔, page 13 (2003)
- 光环: The 洪魔, page 340
- [[光环: Combat Evolved]], campaign level [[光环 (光环: Combat Evolved level)|光环]]
- 光环: Combat Evolved campaign level, The Maw
- 光环: Primordium, page 77-78
- 光环: Primordium, pages 345-346
- 光环: Combat Evolved, level 343 Guilty Spark
- 光环: Combat Evolved Anniversary, Terminal 1
- 光环 2, level Sacred Icon
- 光环 2, level Sacred Icon
- 光环: Primordium, page 295
- 光环: Primordium, pages 279, 339
- 光环waypoint.com/en-us/universe/locations/光环-ring-fragment 光环 Waypoint: Alpha Shard
- 光环：冥冢, page 311
- 光环: Primordium, page 331-332
- 光环：冥冢, page 274
- 光环: Silentium, String Two