As Cem stated, it is not possible to give any useful information unless you can give some details on the type of measurements and type of samples you will be looking at. Powder/single-crystal/thin films/colloids,  inorganic/organic, ambient conditions/high temp/low temp/high pressure/EM field...  novel structure solution/structure refinement(powder or single x-tal), phase identification and percentages, phase transitions....etc.....

Can you narrow it down. Also perhaps most importantly what is your budget?

Hope you are searching for X ray Diffraction equipment specification.

Single Crystal X-ray Diffractometer: most advanced floor mounted system for small molecule crystal data collection & structural determination for samples such as poly-nuclear organo-metallic complexes, bioactive molecules etc. with most advanced mini. 3 KW or more sealed tube X-ray Generator, CCD Detector, necessary goniometer with other accessories & peripherals required to fully integrate the system including water chiller & all hardware & software starting from mounting of crystal to crystallographic information file generation to be able to use Cu & Mo radiation in the offered system with the following specifications: Mounting: Floor mounted for dedicated use in a laboratory. Sample/Detector Positioning System: Sealed tube Goniometer with three axis-stagefully automated; very high angular precision & high angular coverage of mini. 150º 2theta; color video microscope for easy alignment of samples should be in-built features.

Detector & Optics: CCD detector for single crystal frame data collection & imaging/camera, large active area, very high sensitivity between 140eV to 180eV per Mo photon, having maxi. number of pixels, very fast 4 or more number of port readout system; equipped with adequate cooling facility, graphite monochromator with all other necessary accessories/optics.

Generator: Computer controlled X-ray generator of 3KW maintenance free

generator; stability of generator should be +/- 0.01% or better. X-ray Tube: Ceramic X-ray tubes with Molybdenum & Copper anode fine focus 2000 Watt or more; all necessary optics to be included in the basic system to ensure both tubes for crystallographic work.

Radiation enclosure: Fully X-ray protected enclosure as per international safety norms with necessary certificates as per international radiation safety & CE norms. Low Temperature attachment: Low temp. (90K - 300K) with very low liquid Nitrogen consumption, no icing effect, equipped with liquid nitrogen Dewar of a capacity 60 Lts. or more, pressure regulator, transfer line, line heater & necessary accessories.

Essential Accessories & Software

1. External water chiller System: Suitable external water chiller for the offered single crystal X-ray diffractometer system should be quoted from reputed brand with detailed technical specification of manufacturer.

2. Spares: Ceramic x-ray tube with molybdenum Anode: One (1) No. In addition, spares parts kit for at least 2 years normal operation to be included in the offer optionally. Supplier should confirm the availability of spares & support for next 10 years from the date of installation.

3. Capillaries: Capillaries made of special glass with wall thickness of 0.01 mm & outer diameter of 0.2mm, 0.3 mm, 0.5mm, 0.7 mm, & 1.5 mm -20 pcs. of each type & other necessary capillaries / accessories.

4. Test crystal: One test crystals to be included in the basic system.

5. Goniometer Head: 2 (two) Nos. of in the basic system.

6. Application licensed software: WINDOWS 2000/ LINUX based on GUI platform for instrumental control for single crystal, twins, low/high Temp., high pressure, charged density & modulated structure. Able to perform complete data acquisition, scaling, space group determination, structure determination & final report generation for publication purpose; Manufacturer’s licensed software & structure solution software for many users for the structure determination software.

7. Warrantee: The single crystal X-ray diffractometer system including water chiller should be DDP basis warranted for a period of 24 months from the date of installation.

8. UPS for defractometer and water chiller with at least 30 min backup of standard make.

X-ray Diffractometer for Powder, Thin Film & Rietveld analysis:

Floor mounted versatile, upgrade for any other applications i.e. high & low Temp. study, texture, stress, small angle (SAXS) etc. Mini. alignment to changeover from different configuration with all advance feature & latest technology.

X-ray generator: Rack mounted, compact with 3 KW with 60KV & 80mA or better; adjustable in step of 1KV & 1mA or better; stability of the generator should be

There is a lot of parameters. It depends with your main application. Thin film, powder, etc. all diffrent samples needs different techniques and specs. The main things are power, the target type of X-Ray tube, goniometer type (vertical/horizontal), detector frequency. 

If you have specific working area, let me now to guide you better.

As Cem stated, it is not possible to give any useful information unless you can give some details on the type of measurements and type of samples you will be looking at. Powder/single-crystal/thin films/colloids,  inorganic/organic, ambient conditions/high temp/low temp/high pressure/EM field...  novel structure solution/structure refinement(powder or single x-tal), phase identification and percentages, phase transitions....etc.....

Can you narrow it down. Also perhaps most importantly what is your budget?

Excellent and thorough summary Krishnan! If any one uses your recipe for XRD equipment they would be able to use it in most experimental applications, in my opinion.