1 / 13

HYSPEC: A Crystal TOF Hy brid Sp ectrometer

HYSPEC: A Crystal TOF Hy brid Sp ectrometer. S. M. Shapiro HYSPEC IDT Meeting September 10, 2004 CLO Building-SNS- Oak Ridge http://neutrons.phy.bnl.gov/CNS/hyspec/documents/HYSPEC_DOEproposal.pdf. Purpose of Meeting. Inform IDT Members of Progress in design Cost estimates Schedule

denali
Download Presentation

HYSPEC: A Crystal TOF Hy brid Sp ectrometer

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. HYSPEC: A Crystal TOF Hybrid Spectrometer S. M. Shapiro HYSPEC IDT Meeting September 10, 2004 CLO Building-SNS- Oak Ridge http://neutrons.phy.bnl.gov/CNS/hyspec/documents/HYSPEC_DOEproposal.pdf

  2. Purpose of Meeting • Inform IDT Members of Progress in design • Cost estimates • Schedule • Will HYSPEC satisfy your scientific needs? • New scientific opportunities • Provide Information for Options • Inside or outside of building? • Type of ancillary equipment? • Magnets • Progress at SNS

  3. Instrument Development Team (IDT) I. Zaliznyak, co-PI BNL HYPSEC INSTRUMENT S. M. Shapiro, co-PI BNL DESIGN WORKING GROUP G. Shirane BNL J. Tranquada BNL I. Zaliznyak (BNL) L. Passell BNL S. Shapiro (BNL) D. Abernathy SNS L. Passell (BNL) L. Daemen Los Alamos V. Ghosh (BNL) M. Greven Stanford (Monte Carlo Simulations) B. Gaulin McMaster B. Leonhardt (BNL/SNS K. Hirota ISSP (Engineering Design) V. Kiryukhin Rutgers M. Hagan (SNS) (Instrument Scientist) G. Lander EITU Y. Lee MIT C.Majkrzak NIST S. Nagler ORNL R. Osborn ANL L. P. Regnault CEN-Grenoble J. Rhyne LANL R. McQueeney Ames/Iowa St. A. Zheludev ORNL

  4. Science Case • Strongly correlated electron systems • Hi-Tc: YBCO experiment at ILL-IN22 • Low-D magnetism • Quantum critical points • Nanomagnetism and complex systems • Disordered and weakly order phases • Anomalous phonon behavior

  5. Polarized Neutron Study of Resonant Mode in YBCO6.85 (L.P. Regnault et al.) IN22 Spin Flip P // Q Unpolarized Sharp IC Broad C • Much faster data collection • Open new areas for polarized beam use Rise due to increased counting time

  6. SNS Inelastic Neutron Scattering Workshop1 Argonne (11/99) BS SEQUOIA CNCS ARCS HYSPEC • A and B category top priority - “potential day-one instrument” • 1 Report on the SNS Inelastic Neutron Scattering Workshop, SNS Document IS-1.1.8.2-8004-MM-A-00 (2000).

  7. Motivation for HYSPECSNS Workshop (11/99) • Small single crystal samples • Focusing Bragg optics • Broad range of standard sample environments • Use of collimators and beam definers • Sample environment separate from detector vacuum • Low background • Time of flight • Sample out of direct beam • Use of collimators • Vector Q in single crystals • Moveable detector and rotatable sample • Polarization analysis • Proven and maintenance-free technology

  8. History • Fall, 1999 • BNL initiates an effort to design a spectrometer for the SNS • December, 2000 • Concept of the Hybrid Spectrometer formulated and adopted • March, 2001 • First presented to EFAC. Received positive reply • Fall, 2001 • Instrument Development Team formed • October: Workshop on the Hybrid Spectrometer held at BNL • Refined HYSPEC concept presented to EFAC • January, 2002 • HYSPEC IDT filed Letter of Intent with SNS • April, 2002 • Formal presentation to EFAC • July, 2002 • Letter of Intent accepted; • December 2002 • Submit Proposal to DOE, accepted in 2003

  9. HYSPEC Components T0 Chopper Disc Chopper Monochromator Goniometer Radial Collimator, or Bender Polarizers Flight Chamber (evacuated or Ar/He filled) Detectors

  10. Layout on Experimental Floor Coupled H2 Moderator BL 14B

  11. Comparison with other inelastic instruments planned for the SNS • MC simulations by MCSTAS, V. Ghosh (2002) • CNCS, ARCS and HRCS (SEQUOIA) intensities are re-scaled to HYSPEC energy resolution • See Ganroth and Abernathy (ICANS XVI)

  12. SNS User Policy • Set by DOE for all user facilities • 20% for IDT • 5% for Instrument Scientists • 75% for facility reviewed proposal • IDT can apply for facility time

  13. HYSPEC place in the SNS inelastic instrument suite

More Related