Instruction manual
Contents
1. Sxyclops stand should be used to position the module so that the beam coming through the beam guard can be visualized Alternatively use one of the tube sets and watch the beam through the collimator or slit system of the detector system you re using Using the Sxyclops for making pinhole pictures the FR571 or FR591 R A generator Put the pinhole in the FR571 FR591 port and carefully push it in using the pinhole tool Put the Brute AXSXyclops adapter piece in the X ray port and couple the 8 4 SXyclops on the adapter piece Make sure everything is well connected Check the X ray safety Observe the image of the focal spot If it is not a horizontal line unscrew the three bolts that fix the cathode to the tube a little The vacuum will keep the cathode in place Now rotate the cathode slightly while you observe the image of the focal spot A small rotation can have a tremendous effect on the resulting focal spot image If you have found a position where the filament is horizontally aligned you can then optimize the bias At zero bias the spot will have flames above and below the spot By increasing the bias these flames will disappear Try to make the spot as compact as possible but take care not to put the bias too high since the spot will become larger again Especially when using total reflection or ConFocal Maxflux mirrors a well adjusted focal spot will make a huge difference in the resul2. C to 60 C Chip 1 3 CCD chip Resolution 290 000 Pixel Signal Noise less or equal 48 dB Magnification 20 x Bruker AXS B V Page 4 of 10 Bruker AXS Xyclops User manual The 4XSXvclops alignment system consists of the following parts Camera module Stabilised 12V Power supply Mounting stage with magnetic base 3 different adjustable Adapter sets Osmic Adapter Option Huber Monochromator Adapter option Camera holder FR571 FR591 port Adapter SNe ee he S Assembly The mounting stage can be assembled as shown below Mount the camera holder with the recess facing upwards Fix the holder at the desired height Mount the camera on the stage Page 5 of 10 Bruker AXS B V Bruker AXS Xyclops User manual The adjustable adapters can be combined in different ways in order to define different path lengths for the X ray beam This is especially useful when focussing mirrors for a specific crystal detector distance For convenience we label the inner tubes A B and C where A is the shortest and C the longest tube The outer tubes are labeled II and III in an analogous fashion The three sets of inner and outer tubes will then combine in the following way to give the below listed path lengths Combination A I A II B B Il C III Range mm 75 115 110 145 150 190 155 230 225 400 Note that there is an overlap in the different ranges Bruker AXS B V Page 6 of 10 Bruker AXS Xyclops Use
3. in the 0 3 mm collimator Adjust by using the vertical and horizontal adjustments of the collimator support Now close the shutter remove the 4 Sxyclops and stage Use the alignment procedure of the Image Plate detector to optimize the position of the detector Place the beamstop when this is done Put the 4 Sxyclops camera module back in its carrying case Disassemble the stand and pack the parts in the carrying case in their place When not used the Sxyclops system should be stored in the carrying case This will prevent parts from getting lost and or damaged Using the Sxyclops for alignment of Osmic Confocal MaxFlux optics The Osmic adapter is a hollow tube with a 25mm 1 inner diameter in one end and a 22 mm inner diameter in the other end This adapter is useful for doing a rough alignment of the Osmic confocal multilayer mirrors note that the Osmic adapter is made to fit the Osmic exit piece of the Osmic mirrors Adapters for the MAR or KappaCCD will be too small Mount the Osmic adapter on the 25mm diameter edge tube of the Osmic mirror hosing and mount the 4 Sxyclops camera module in the other end of the Osmic adapter as shown in the figure below Bruker AXS B V Page 8 of 10 Bruker AXS Xyclops User manual For a description of the alignment procedure please refer to the Osmic CFM manual For fine alignment of the Osmic mirror the beam guard should be replaced and the
4. will focus the beam When looking in the direction of the beam a clockwise rotation is equivalent of increasing the bend On most mirror systems bending and rotation are not independent and it may be necessary to adjust the rotation after adjusting the bend Adjust the second mirror in an analogous fashion After the slit for the second mirror has been adjusted then a patterns of four spots should remain on the screen On the XOS total reflection mirror the upper right hand spot is the doubly reflected beam Note that the way the image appears on the screen is mirrored left right in relation to how it appears when looking at a fluorescent screen The Sxyclops has the same view as the camera man The second mirror normally produces a much sharper and smaller image than the first mirror i e the doubly reflected beam is smaller in the vertical direction than in the horizontal This is inherent in the design of the reflecting mirror and therefore the source mirror focus relation is more favorable for the second mirror Using the SXyclops for fine adjustment of the XOS total reflection mirrors Put the collimator support and the 1 0 mm collimator on the XOS mirror Put a 0 15 mm Ni filter in the mirror Remove the beamstop Move the detector to its maximum distance Place the e AXSXyclops mounted on its stage between the detector and the collimator system of the XOS Adjust the height to fit with the XOS exit Prepare an ap
5. Bruker SXyclops CCD Camera for X ray alignment Instruction manual P O Box 811 NL 2600 AV Delft The Netherlands Tel 31 15 2 512 400 Fax 31 15 2 512 500 www bruker axs nl Bruker AXS Xyclops User manual Welcome Thank you for purchasing the 4SXyclops a simple and versatile tool for visualizing X ray beams from generators monochromators mirrors and X ray optics This system provides you with an easy and simple tool to help you with optimal fast and safe alignment of your X ray systems either by looking at pinhole images to optimize the beam coming from your rotating anode generator or by looking at the X ray beam from beam conditioning devices Bruker AXS B V Page 2 of 10 Bruker AXS Xyclops User manual Contents COMENS ee eee ces EE ce eee cme E eee re a beeen eee EE EN 3 CANS SIO oricac putea eetausieruxnenen donautangnaeceatnnapeianancisem intake a a E E A T EEEREN 4 Setting the Camera tO WOM vi sciisnisncrananannsanaiazananncennianananatanacatatanaietscanntetadanensnstanacatatanaietananntenane 4 Sec rity and Operational NMOte S rsrsrsr aaaea ce ee meee AEE E E 4 SD SCIMCANOMS esere naa aa EEEa AEE A REAA aE RRR E AEE 4 PSSOMIDIY heresi enaA A ai Eaa EEEE EERS 5 Using the SXyclops for basic alignment of the XOS total reflection mirrors 0 00 7 Using the 4 SXyclops for fine adjustment of the XOS total reflection mirrors 0 00000 7 Using the SX
6. nd up down slightly in order to find the right position Note Do not work with a too intense beam since this will cause the image to bleed out and this reduces the spatial resolution and thus the possibility to see fine details and small intensity variations If the beam is too strong reduce the current of the generator Open the slits of the first and second mirror slightly so that two lines rather than four discreet spots are visible The two lines should form a cross and the intersection of this cross represents the doubly reflected beam Turn the bending knob of the first mirror to focus the horizontal line adjust the rotation to maintain the intensity level a clockwise rotation will increase the reflection angle Increase the reflection angle until the intensity becomes weaker Decrease the angle again to just regain maximum intensity The mirror is now set close the critical angle for total reflection Repeat the procedure for the second mirror here a clockwise rotation will normally increase the reflection angle however this can be different for some configurations Now start closing the slits for the first and second mirror until each line separates into two spots Keep track of where the intersection between the lines was since this is the doubly reflected beam Now put in the 0 4 mm collimator If the doubly reflected beam starts disappearing use the vertical and horizontal translations of collimator support to keep the beam visible Put
7. propriate adapter tube set Adjust the length of the adapter to correspond to the desired crystal detector distance at which the mirrors should be focussed The crystal detector distance is determined in the following way measure the full length of the adapter and then subtract 15 mm The resulting distance is the focussing distance as measured from the crystal position For example if the mirrors should be focussed at 120 mm use the combination of inner tube A and outer tube II and adjust to a total length of 135 mm Now mount the adapter on the Sxyclops Place it such that the inner tube fits over the collimator Careful The longer adapter tubes are too heavy for the magnetic feet of the stand and they require support in both ends Adjust the Page 7 of 10 Bruker AXS B V Bruker AXS Xyclops User manual Bruker AXSXvelops left right and up down to place it in an approximately straight line between collimator exit and center of the detector Adjust the collimator support with respect to the X ray beam using the alignment procedure as described in the XOS manual Open the shutter of the generator Keep the power of the generator at a rather low setting although it may in this stage of the alignment be necessary to raise the power above the previously recommended level At this stage a power setting of 40kV and 30 40 mA may be necessary If the double reflected spots is not visible it may be necessary to move the camera left right a
8. r manual Using the SXyclops for a basic mirror alignment of the XOS total reflection mirrors Mount the camera module on the mounting stage and set the height to roughly the beam height Connect one of the shorter outer tubes or II to the camera module Position the end of the tube as close as possible to the exit window of the mirror Set the generator power to a relatively low setting approx 30kV and 10 20 mA should be enough Open the X ray shutter Watch the beam as a bright area on the monitor screen Note that it may be necessary to slightly move the camera stage sideways or the camera module up or down in order to get the image of the X ray beam in the center of the screen Take care during this procedure since X rays could accidentally be released Adjust the first mirror rotation and bending until a bright line is visible above the fainter background image Adjust the first mirror slit to remove the overlaid background pattern until only a thin line remains Adjust the rotation of the first mirror until the separation between the remaining background line and the reflected line is as large as possible but without the intensity of the reflected beam decreasing in intensity Turn the bending knob and watch as the reflected line broadens as a result of defocusing or overfocusing If the camera is very close to the mirror then a large bending is necessary to focus the beam if the camera is far away then a small amount of bending
9. ting intensity Page 9 of 10 Bruker AXS B V Bruker AXS Xyclops User manual Maintenance The three sets of adapter tubes are made from a material that can corrode when exposed to an acid or humid environment To prevent corrosion it is recommended to store these tubes in such a way that exposure to humidity and acidic environment is minimized If traces of corrosion should start to occur on the tubes then cleaning them with light machine oil will prevent further corrosion Bruker AXS B V Page 10 of 10
10. yclops for alignment of Osmic Confocal MaxFlux Optics c ccceeeeee 8 Using the AXSXyclops for making pinhole pictures the FR571 or FR591 R A generator 9 MaAiNtG HAN CS maniaci ni eea an a i ae a See sdded E taencdes aiehdlee tae sddebeau niga ES 10 Page 3 of 10 Bruker AXS B V Bruker AXS Xyclops User manual Camera Module Window with X ray sensitive phosphor 2 Monitor connector 75 Q BNC Female connector 3 Connector for Power supply 12V DC Polarity Negative ground Setting the Camera to work ls Connect the camera to a PAL monitor or a PC with Video Card using the 75 Q Coaxial cable 2 Connect the camera to the 12V power supply 3 The camera is ready for use Security and Operational notes e The camera module contains no serviceable parts and should not be opened up Opening of the module could damage the camera and voids the warranty e The camera should not be subject to shock or to extreme variations in temperature e A black protective film protects the X ray sensitive part Avoid touching this film with your fingers or with any sharp object Doing so could damage the phosphor e Repairs to the 4 SXyclops may only be carried out by qualified personnel Warning When using the SXyclops as a detector for X rays pay attention to X ray safety Specifications Operating voltage 9 12 V Direct current negative ground Current approx 100 mA Temperature range 25
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