How to Download Belle II in Virtual Reality

1. Click on the Belle II in Virtual Reality download button below.
2. Choose "Install" to install the game on the windows steam client.
3. Follow the on-screen prompts
4. Let it download the Full Version.
5. Once a game is downloaded, use the Windows Steam Client to play the game.

=== Download Game ====

Download for pc →

This guide describes how to use Steam Proton to play and run Windows games on your Linux computer. Some games may not work or may break because Steam Proton is still at a very early stage.

1. Activating Steam Proton for Linux:
Proton is integrated into the Steam Client with "Steam Play." To activate proton, go into your steam client and click on Steam in the upper right corner. Then click on settings to open a new window. From here, click on the Steam Play button at the bottom of the panel. Click "Enable Steam Play for Supported Titles."

Alternatively: Go to Steam > Settings > Steam Play and turn on the "Enable Steam Play for Supported Titles" option.

Valve has tested and fixed some Steam titles and you will now be able to play most of them. However, if you want to go further and play titles that even Valve hasn't tested, toggle the "Enable Steam Play for all titles" option.

2. Choose a version
You should use the Steam Proton version recommended by Steam: 3.7-8. This is the most stable version of Steam Proton at the moment.

3. Restart your Steam
After you have successfully activated Steam Proton, click "OK" and Steam will ask you to restart it for the changes to take effect. Restart it. Your computer will now play all of steam's whitelisted games seamlessly.

4. Launch Stardew Valley on Linux:
Before you can use Steam Proton, you must first download the Stardew Valley Windows game from Steam. When you download Stardew Valley for the first time, you will notice that the download size is slightly larger than the size of the game.
This happens because Steam will download your chosen Steam Proton version with this game as well. After the download is complete, simply click the "Play" button.

Windows Pc Requirements

Minimum:

• Requires a 64-bit processor and operating system
  
• OS: 10
  
• Processor: Intel or AMD
  
• Memory: 8000 MB RAM
  
• Graphics: GPU
  
• DirectX: Version 10
  
• Storage: 1000 MB available space
  
• Sound Card: any
  
• Additional Notes: VR-ready but will display on screen without VR equipment

Recommended:

• Requires a 64-bit processor and operating system
  
• OS: 10
  
• Processor: Intel Core i7
  
• Memory: 16000 MB RAM
  
• Graphics: GeForce GTX 1060 6GB
  
• DirectX: Version 10
  
• Storage: 1000 MB available space
  
• Additional Notes: HDMI port, 2 USB-3 ports, VR gear (Oculus Rift or HTC Vive)

Linux Requirements

Minimum:

• Requires a 64-bit processor and operating system
  
• OS: Ubuntu 14.04.5
  
• Processor: Intel core i7
  
• Memory: 8000 MB RAM
  
• Graphics: GPU
  
• Storage: 1000 MB available space
  
• Sound Card: any
  
• Additional Notes: Displays on screen (no VR)

Recommended:

• Requires a 64-bit processor and operating system
  
• Memory: 16000 MB RAM
  
• Graphics: GeForce GTX
  
• Storage: 1000 MB available space

Mac Requirements

Minimum:

• Requires a 64-bit processor and operating system
  
• OS: 10
  
• Processor: Intel
  
• Memory: 8000 MB RAM
  
• Graphics: GPU
  
• Storage: 1000 MB available space
  
• Sound Card: any
  
• Additional Notes: VR-ready (HTC Vive; requires SteamVR BETA opt-in) but will display on screen without VR equipment

Recommended:

• Requires a 64-bit processor and operating system
  
• OS: 10.13
  
• Processor: Intel Core i7
  
• Memory: 16000 MB RAM
  
• Graphics: Radeon Pro 500 series
  
• Storage: 1000 MB available space
  
• Additional Notes: For VR, you must opt in to the SteamVR BETA.

Interactive subatomic particle physics simulation of the Belle II experiment in virtual reality

This virtual reality model of the Belle II experiment at the KEK laboratory in Japan shows the marvels of the subatomic world, where matter and antimatter collide at nearly the speed of light, converting energy to matter and back again according to Einstein’s famous formula E = m c squared, all in the blink of an eye. Watch and control the simulation of each collision event in which an electron and its antimatter counterpart collide and morph into other forms of subatomic matter that move through the Belle II apparatus.

There are three variants of the Windows app: for the Oculus Rift, the HTC Vive, and the computer screen. The Mac OSX and Linux apps display on the computer screen.

Please see pages 1-4 of the quick-reference guide for the hand-controller joystick and button mappings for your controller (Xbox controller, Oculus Touch, or Vive) or for your computer's keyboard/mouse.

When you start the app, you see the true-scale Belle II apparatus (relocated from Japan into the CUBE at Virginia Tech). The exterior container fades away, exposing the active detector elements inside. The first electron-positron-collision event is loaded and then animated for its 100-nanosecond duration, showing the detailed trajectories of the incoming particles along the two beam lines and of the by-products from the collision of one electron with one positron. At the end of this collision history, the particle sprites and trails are erased so that you see only the hits recorded by the active detector elements in the "snapshot" of the collision event. Beam-line particle bunches pass through each other every 4 nanoseconds but only a few of these bunch crossings result in a collision; the colliding particles are highlighted in the animation. The beam-line particle bunches circulate in the vacuum beam lines of the 3-kilometer-circumference SuperKEKB accelerator; only the short section nearest the Belle II apparatus is shown in this app.

With your controllers, you may move horizontally and vertically to enter the detector's interior and rotate your viewpoint. By turning your head, you may view the detector and the collision by-products from different orientations. You may rewind and fast-forward through the history timeline of each collision event, pause/resume, and slow down or speed up the animation rate. You may zoom in or out with your controllers if you enable this feature in the in-game menu (guide page 6).

Gazing at one of the particle sprites, you may select it to expose a panel of detailed information about the particle (guide page 5). Check the SAVE box to copy this information to the virtual panel on one wall. Gazing at the rows on this wall, you may select among them to display the sum of the kinematic quantities in the bottom row. Check the FOCUS box on the sprite's info panel to highlight only the generational chain of daughters from this parent, temporarily hiding all other particle sprites and trajectories. In this state, bring up a similar information panel to UNFOCUS the generational chain and re-display all of the sprites and trajectories.

With your controllers, toggle the display of the in-game menu or reposition it in front of you. Choose among three sub-menus (guide page 6) to control aspects of the event animation. The event-history timeline is always visible at the bottom of the menu: with your gaze and selection, you may scrub through this timeline and change the animation rate. In the TRANSFORM sub-menu, you may reposition yourself and scale the size of the detector (nominally at the true scale of 1:1); you may also enable the use of the controller hot-keys for menu-free zooming. In the DETECTOR sub-menu, you may change the visibility of parts of the Belle II apparatus (the active parts record the event snapshots, the passive parts provide the supporting structure). In the PARTICLES sub-menu, you control the visibility of some or all of the particle sprites and the sprite size; gazing at the entries in the event list, you may select among the available collision events (guide page 7). You may edit the event sequence or add new event histories by following the instructions on guide page 8.

Enjoy your explorations of the subatomic world with the Belle II detector!

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