• Search Hutch If you cannot begin the search, make sure BOTH doors of the experimental hutch are closed. There is only one search button inside the hutch (at the far end).

2. Control cabin CC3

Beam Line Computers

• agatha: Experiment control terminal (use agatha to run mono_eh3 and eh3 Control software). Has icons on its desktop to select software to be run like Vacuum.
• athena: Old control computer, now inside the experimental hutch, used to run web cameras or spec sessions if in the hutch.
• hermes: Terminal directly connected to agatha. Has icons on its desktop to select software to be run.
• pc143data: backup and data processing, PC with ESRF Linux
• xvisu: PC Windows computer used in Sample Preparation Lab to run nanodrop spectrophotometer
• lid148: rackable PC, beamline control computer running Wagos servers, etc.
• wid143momo: PC Windows computer used to run data analysis programs
• (wid143vantec: PC Window computer in Exp. hutch used to run VANTEC 2000 detector software) now not used
• p1m-id143-1: PILATUS 1M detector computer in Exp. hutch
• wid143biosc: PC Window computer in Exp. hutch used to run sample changer software, accessible from Control cabin via KMV switch on athena

• printer: located in Control room: type lp -da4bid143 filename_to_print

• Data Collection Software = BsxCuBE : a graphical interface.

This program runs data collection (also data reduction if asked) and allows to visualisate 2D images as well as 1D curves.
To start BxsCuBE, either click on the icon on the desktop (easiest!!) or type BxsCuBE in an agatha xterm window. There is also a bomb to stop it if needed

• Average exposure : 10 sec (30 sec with Vantec-2000 detector) per frame, usually 10 frames recorded; always be aware of radiation damage
• Guard slits define the illuminated spot on the sample = 0.7 mm x 0.7 mm, resulting to ~ 1 mm by 1 mm beam on the detector plane
• Distances sample to detector allowed:
  Min Dist = 50 cm, Max Dist = 350 cm, by steps of 50 cm (distance modification manuel and takes about 1h effort of 2 persons), now set to 1.668 m
• Wavelength = 0.931Å, divv=33mrad, divh=51mrad

Data written directly to NICE: /data/visitor/your_proposal_number/id14eh3/
Create your directories from BxsCuBE interface to avoid permission problems

• Front end control and machine status
  On agatha there is a Front End desktop where the front end application should be running. If not, then click the icon Front End Application on the desktop. The machine and Front End status window will appear.

  Status of machine with messages from machine group (beeps for a new message)
  Automatic mode [Commands/Remove or Commands/Set Automatic mode]
  This mode is set for 72 hours. Think of resetting it sometimes.
  Check of the undulators' gaps [Commands/ID control]. Don't change it!! Only if they are all three widely open (the value as 295.99 mm means that an undulator is definitelly open, i.e. its two magnets are too far to produce any reasonable magnetic field, no field, no electron path deviation, no photon produced...) you can close them to U42=17.08 mm, U23=16.01 mm and U24=19.6 mm which corresponds to the maximal flux for side strations.

• Image viewing
  - inside the BxsCuBE or by using Oxidis program: click on its icon on the left-hand desktop of agatha, or by typing 'oxidis --popup_mode' in an agatha xterm window

• PILATUS detector 
  The detector used is PILATUS 1M which consists of ten (2 x 5) basic modules of 487 x 195 pixels of 172 μm x 172 μm each. It is based on the CMOS hybrid-pixel technology and operates in single-photon-counting mode. The total active area is 169 mm x 179 mm with 981 x 1043 pixels. Dynamic range is 20 bits (1:1,048,576) and counting rate per pixel > 2 x 10⁶ X-rays/s.

Formely we have used the gas filled Vantec-2000 of Bruker.

It has the total active area of 14 cm x 14 cm with 2048 x 2048 pixels, the pixel size of 68 μm. Spatial resolution is < 230 μm FWHM. Desktop of the PC (wid143vantec, located in the experimental hutch) which runs the detector software GADDS is accesible through vncviewer: click on its icon (if not already open), psw is 'tonic14'. The important limitation of this detector is the maximal counting rate being 500000 counts/second. The incident beam has to be attenuated accordingly for each exposure to avoid its 'overshooting' and conseqent deterioration of the experimental data.

• Backstop and sample alignment
  If you think that the backstop is misaligned, go to eh3 spec section and tape for example "mvr bsy 0.2" to move it in horizontal direction by 0.2 mm in positive (= to the right if looking along the beam), or "mvr bsz -0.2" to move the beamstop by 0.2 mm down. Be sure what you are doing!!! Sample (i.e. capillary) can be moved for example (again in eh3 spec) by "mvr sy 1" - in horizontal direction by 1 mm (can be useful if capillary too dirty when the beam is passing) and by "mvr sz 0.2" - in vertical up by 0.2 mm (if capilary is scattering on its wall).

Both alignment can be done in quazi-automatic way using BsxCuBE interface in Beamline perspective.

• Processing/Strategy on wid143momo (or pc143data)
  On wid143momo Window PC there is installed the data processing package atsas (can be loaded from EMBL Hamburg web pages ) containing Primus, Gnom, Crysol etc. programs
  

For information regarding passwords and door codes, please see the link in the left-hand navigation (visible to onsite visitors only).