Thermo-mechanical analysis of the white-beam slits for an undulator beamline at the Advanced Photon Source

Conference · Thu Sep 01 04:00:00 EDT 1994

OSTI ID:10180140

Nian, H L.T.; Shu, D; Kuzay, T M

A set of precision horizontal and vertical white-beam slits has been designed for an undulator beamline at the Advanced Photon Source. Due to the powerful x-ray heat flux emitted by the undulator, it is difficult to control the thermal distortion within the desired range of 1-2 microns. We analyzed many conceptual designs in an attempt to minimize the thermal distortion of the slits. Even with 1-mm-thick, low-Z material (graphite) coated on the heating surface of a traditional slit, the maximum thermal distortion is over 25 microns. A three-piece slit was then designed to satisfy the requirements. It consists of one large block, two tungsten knife edges, and an OFHC cooling tube (filled with copper mesh) brazed inside the large block. The thermal distortion at the knife edges of this three-piece slit has a relative displacement of less than 2 microns.

• Research Organization: Argonne National Lab., IL (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 10180140
• Report Number(s): ANL/XFD/CP--82935; CONF-940714--22; ON: DE94018380
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430303
430400
ADVANCED PHOTON SOURCE
BEAM OPTICS
BEAM SHAPING
EXPERIMENTAL FACILITIES AND EQUIPMENT
HEAT FLUX
ONDULATOR RADIATION
STORAGE RINGS
THERMAL ANALYSIS
WIGGLER MAGNETS