Cryogenic monochromator as a solution to undulator heat loads at third generation synchrotron sources

Conference · Sat Oct 01 00:00:00 EDT 1994

OSTI ID:10106813

Knapp, G S; Rogers, C S; Beno, M A; Jennings, G; Cowan, P L

We have developed a new design for a cryogenically cooled monochromator employing a thin-crystal strategy which is capable of handling the central-cone power of the Advanced Photon Source`s Undulator A at closed gap and at the full design current of 300 mA. We have designed and fabricated a Si (111) crystal which has a thin section where the x-rays hit and has internal cooling channels. A invar manifold has also been designed and it will be attached to the Si via In gaskets. We have done detailed modeling, both with approximate analytical and with finite element calculations. The results shown that our design has negligible thermal strain even for closed gap operation.

• Research Organization: Argonne National Lab., IL (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 10106813
• Report Number(s): ANL/MSD/CP-82826; CONF-940714-46; ON: DE95004647; TRN: 95:000841
• Resource Relation: Conference: 5. international meeting on synchrotron radiation instrumentation,Stony Brook, NY (United States),18-22 Jul 1994; Other Information: PBD: Oct 1994
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ADVANCED PHOTON SOURCE
MONOCHROMATORS
SILICON
HEAT FLUX
THERMAL STRESSES
FABRICATION
BRAGG REFLECTION
SYNCHROTRONS
CRYSTALS
430300
AUXILIARIES AND COMPONENTS