Photon Sciences   |   Brookhaven National Laboratory

X27A External Website

Beamline X27A

  • General Information

    • Source Type
      Bending magnet

      Status
      Operational

      General User Beamtime
      50%

      Energy Range Category
      Hard X-Ray (1-50 keV)

      Energy Range
      4.5-32 keV

      Beamline Type
      Facility Beamline

      Technique(s)
      X-ray microprobe

      Institution(s)
      Univ of Chicago, Ctr Advanced Radiation Sources

      Research Types
      Environmental Science, Geoscience, Physics, Chemistry, Biology
  • Contact Information

    • Spokesperson The person from each beamline who acts as a contact point between the beamline management and NSLS administration. Contact for questions about the beamline scientific program, experimental capabilities, and beamline management.
      Ryan Tappero, Brookhaven National Laboratory, rtappero@bnl.gov, 344-5514

      Local Contact The beamline staff member who is typically responsible for overseeing the daily operation and maintenance of the beamline. Contact for questions about beamline instrumentation, experimental details, and training.
      Ryan Tappero, Brookhaven National Laboratory, rtappero@bnl.gov, 344-5514
      Randy Smith, Brookhaven National Laboratory, rsmith@bnl.gov, 344-8033

      Beamtime Scheduler The beamline staff member responsible for coordination of beamline schedule every trimester. Contact for questions about beamtime scheduling.
      Ryan Tappero, Brookhaven National Laboratory, rtappero@bnl.gov, 344-5514

      Beamline Phone
      631-344-5514

  • Instrumentation

    • Beamline Characteristics

      Energy RangeMono Crystal or GratingResolution (ΔE/E)FluxSpot Size (mm)Total Angular Acceptance (mrad)
      4.5 – 20 keV Si(111) 1.2 x 10-4 (Δλ/ λ) 5 x 109 ph/sec 0.015 (h) x 0.010 (v) 0.1
      5.5 - 32 keV Si(311) 2.5 x 10-5 (Δλ/ λ) 1 x 109 ph/sec 0.015 (h) x 0.010 (v) 0.1


      Source Type
      Bending magnet

      Optical System
      Mirrors: The X27A micro-focusing system consists of two, 20 cm long, dynamically bent rhodium-coated silicon mirrors arranged in Kirkpatrick-Baez (KB) geometry, which is housed within a helium-purged enclosure. The KB mirrors (10.2 meters from the source) focus a 1mm x 1mm beam down to about 10 μm [vertical] x 15 μm [horizontal] with an average flux of 5x109 ph/sec. The demagnifications in the vertical and horizontal directions are 26:1 and 55:1 respectively, and the working distance is 9 cm. Monochromator: The monochromator consists of two water-cooled channel-cut crystals [Si(111) and Si(311)], with a four-jaw motorized slit system located immediately upstream of this arrangement.

      Experimental Apparatus
      Radiation hutch. Canberra 13-element Germanium Array X-ray detector with XIA XMAPS DSP (digital signal processing). Ion chambers and photodiode detectors. XYZ-theta high-resolution motorized sample position stage. Motorized experimental table (6-degrees of freedom). CCD-coupled optical microscopes.

      Computer System Hardware & Software
      Beamline components are controlled by EPICS 3.14.7 running on a VME (VxWorks) and LINUX systems. The user interface is through the IDL, spec and medm clients. The user views the experimental system (sample and the surrounding environment) through CCD-coupled optical microscopes. Rewritable DVD/CD disks are available for use. Windows 7 running IDL and medm clients; Linux RedHat 9.0 running IDL, medm and SPEC clients; Xerox Phaser 6250 Color Printer.
  • Links