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Joint Research Group Macromolecular Crystallography

BL14.2 Specific Information

Further information for remote access of BL14.2


Find detailed beamline information here  

Creating a NoMachine connection

A prerequisite to connect to our experimental infrastructure is a successful connection to our NoMachine server foris.helmholtz-berlin.de using the rex_account credentials via the NoMachine client software.
To establish a new connection, select "Add" in the top left corner to open the corresponding window:



Start screen from which to create a new NoMachine connection

In the window that opens, under the Tab "Address", "Name" refers to the name that you want this new connection to have. For "Host" enter "foris.helmholtz-berlin.de". For "Port" and "Protocol" leave "4000" and "NX". Then press "Connect" in the upper right corner:


Address settings for a new NoMachine connection

Once you have connected using this new connection using your REX account name and password, you will see the available machines:

14.2 machines

NoMachine screen with available BL14.2 computers

Connection setup

After selecting the anticipated connection, you will get the first setup screen. Here please select: "Scale the Remote Desktop to fit into the window" and Press "OK".

Nomachine scaling I

NoMachine display settings I

Now you can see the display setting screen. Here, please select "Don't resize the remote display". In case you have a single display setting, you need to select the "Scale to window" option within the bottom display icon selection. This option creates a single remote display matching to your no machine window.

In case you have a dual-display setup with two equally sized displays (geometry and resolution), you could also choose to display two remote displays alternatively and if present, within your local single NoMachine window. This option might be of advantage for the MXCuBE connection only. Therefore press the "Select remote display" icon and select "ALL". Now, both displays will be shown within your NoMachine window. In order to view these displays at their native aspect ratio side by side, you will need to expand this window over both local displays. This can be achieved in dragging the lower right corner with the pressed left mouse button. 

Nomachine screen selection

Alternative NoMachine screen selection for "ALL" display presentation

It is important the set the display quality for an optimal display. You can reach this menu either when creating a new connection or at any time during your session by pressing the keyboard combination Ctrl+Al+0 (Fn+Ctrl+0 or Ctrl+Option+0 on a Mac). Alternatively, during your session, you can reach out to the upper-right edge of your connection screen and click on the "rolling corner." In the menu, you need to select the display button.

Now, select the "Change settings" icon in the bottom right screen and turn the "Quality" and "Resolution" slider to the right, in order to maximize the quality of the remote connection. 
These settings are important to enable a good video quality of the zoom microscope to center your samples properly. Do not activate any click-box within this window. 

Nomachine quality

NoMachine display quality settings

BL14.2 available video streams

At BL14.2 several high-definition video cameras provide live streams. You can only connect during your session to the following streams:


BL14.2 computing environment

At BL14.2, you can connect to these machines:

BL142 MXCuBE control:
MXCuBE control machine, dual monitor, login/out using your px-credentials

BL142 Processing:
Multi-core, data processing machine, xdsapp evaluations, login/out using your px-credentials

BL142 Data Backup:
terminal machine to be used at users' requirements, login/out using your px-credentials. 

Always log out from these machines after your data collection time! 


BL14.2 MXCuBE Control

Startup sequence:

  1. Login to mxcube142b with your px-credentials
  2. Add the appropriate keyboard layout in case you are not connected with an English layout keyboard.
  3. Right-click open terminal windows
  4. Launch the control environment with <run_mxcube> to start mxcube and run_adxv  to start ADXV
  5. In another terminal window, start <firefox> and connect to http://cam8.psf.bessy.de
  6. You may also connect to video streams http://cam2.psf.bessy.de and http://cam5.psf.bessy.de if necessary.

Stop sequence:

  1. Close MXCuBE application
  2. Close ADXV application
  3. Close Firefox
  4. Logout of mxcube142
  5. Disconnect from the respective NoMachine session

BL14.2 Processing Server

Startup sequence:

  1. Login to "14.2 Processing" via a new NX session
  2. Use your px-credentials to log in
  3. Add the appropriate keyboard layout in case you are not connected with an English layout keyboard.
  4. Right-click open terminal windows and type "hkl7"
  5. You might be asked to confirm the login: Type "YES"
  6. If a password is requested, use the pX-account password
  7. Launch xdsapp with <xdsapp3> to start the processing GUI

Stop sequence:

  1. Close all application
  2. Logout from the "14.2 Processing" machine
  3. Then disconnect from the NoMachine session