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CHRNS MACS - The Multi Axis Crystal Spectrometer
NIST Center for Neutron Research

Acknowledgement Information

If you write a paper that reports measurements using the MACS, please be sure to include this acknowledgement to the NSF, and to NIST

This work utilized facilities supported in part by the National Science Foundation under Agreement No. DMR-1508249.

Please also include a reference to the following paper describing the MACS

"MACS-a new high intensity cold neutron spectrometer at NIST" by J. A. Rodriguez, D. M. Adler, P. C. Brand, C. Broholm, J. C. Cook, C. Brocker, R. Hammond, Z. Huang, P. Hundertmark, J. W. Lynn, N. C. Maliszewskyj, J. Moyer, J. Orndorff, D. Pierce, T. D. Pike, G. Scharfstein, S. A. Smee and R. Vilaseca, Meas. Sci. Technol. 19 034023 (2008)

In addition, the following (or similar) acknowledgement is expected to appear in all publications of work done at the NCNR that do not explicitly have a coauthor from the NCNR.

We acknowledge the support of the National Institute of Standards and Technology, U.S. Department of Commerce, in providing the neutron research facilities used in this work.

Please be aware that all papers with NIST coauthors must be reviewed and approved by the Washington Editorial Review Board (WERB). Members of WERB are concerned not only with scientific merit but with three specific matters: measurement uncertainties, the use of SI units, and brand names. For more detailed information please click here, and/or speak with your NIST coauthor(s).


MACS Publications statistics.



  1. "Spin excitations and the Fermi surface of superconducting FeS" by Haoran Man, Jiangang Guo, Rui Zhang, Rico U. Schonemann, Zhiping Yin, Mingxuan Fu, M. B. Stone, Qingzhen Huang, Yu Song, Weiyi Wang, David Singh, Felix Lochner, Tillman Hickel, Ilya Eremin, Leland Harriger, Jeffrey W. Lynn, Collin Broholm, Luis Balicas, Qimiao Si and Pengcheng Dai.(Submitted)
  2. "Single-ion properties of the Se = 1/2 XY antiferromagnetic pyrochlores, NaA'Co2F7 (A' = Ca2+, Sr2+)" by K.A. Ross, J.M. Brown, R.J. Cava, J.W. Krizan, S. E. Nagler, J.A. Rodriguez-Rivera, and M. B. Stone. (Submitted)
  3. "Gapped Excitations in the High-Pressure Antiferromagnetic Phase of URu2Si2 " by T.J. Williams, H. Barath, Z. Yamani, J.A. Rodriguez-Riviera,  J.B. Leao, J.D. Garrett, G.M. Luke, W.J.L. Buyers, and C. Broholm. (Submitted)
  4. "The magnetic Hamiltonian and phase diagram of the quantum spin liquid Ca10Cr7O28" by Christian Balz,  Bella Lake, A.T.M. Nazmul Islam, Yogesh Singh, Jose A. Rodriguez-Rivera, Tatiana Guidi, Elisa M. Wheeler, Giovanna G. Simeoni, and Hanjo Ryll. (Submitted)
  5. "Competing spin density wave, collinear, and helical magnetism in Fe1+xTe " by C. Stock, E. E. Rodriguez, P. Bourges, R. A. Ewings, H. Cao, S. Chi, J. A. Rodriguez-Rivera, and M. A. Green. Phys. Rev. B. (Accepted)
  6. "Field induced spontaneous quasiparticle decay and renormalization of quasiparticle dispersion in a quantum antiferromagnet" by Tao Hong, Yiming Qiu, Masashige Matsumoto, David Tennant, K. Coester, Kai Schmidt, F. F. Awwadi, M. M. Turnbull, H. Agrawal, and Alexander Chernyshev. Nat. Commun (Accepted)
  7. "Gapped excitation in dense Kondo lattice CePtZn" by L. Harriger, S. M. Disseler,J. Gunasekera, J. Rodriguez-Rivera, J. Pixley, P. Manfrinetti, S. K. Dhar, and D. K. Singh. Phys. Rev. B 95, 041102(R) (2017)




  1. "Impurity effects on spin dynamics in magnetic and superconducting iron pnictides and chalcogenides" by M. A. Surmach, P. Y. Portnichenko, J. T. Park, J. A. Rodriguez-Rivera, D. L. Sun, Y. Liu, C. T. Lin, D. S. Inosov. Phys. Status Solidi B. DOI: 10.1002/pssb.201600162 (2016)
  2. "Antiferromagnetic and Orbital Ordering on a Diamond Lattice Near Quantum Criticality" by K.W. Plumb, Jennifer Morey, J. A. Rodriguez-Rivera, Hui Wu, A. A. Podlesnyak, T. M. McQueen, and C. L. Broholm. Phys. Rev. X 6 041055 (2016)
  3. "Recent Advancements of Wide-Angle Polarization Analysis with 3He neutron Spin Filters" by W. C. Chen, T. Gentile, Q. Ye, A. Kirchoff, S. M. Watson, J. A. Rodriguez-Rivera, Y. Qiu and C. Broholm. J. Phys. Conf. Ser. 746 012016 (2016)
  4. "Absence of long wavelength nematic fluctuations in LiFeAs" by Adrian Merritt, Jose Rodriguez-Rivera, Yu Li, Weiyi Wang, Chenglin Zhang, Pengcheng Dai, Dmitry Reznik. J. Supercond. Nov. Magn. 29 3049-3051 (2016).
  5. "Robust Upward Dispersion of the Neutron Spin Resonance in the Heavy Fermion Superconductor Ce1−xYbxCoIn5"  by Yu Song, John Van Dyke, I. K. Lum, B. D. White, Sooyoung Jang, Duygu Yazici, L. Shu, A. Schneidewind, Petr Cermak, Y. Qiu, M. B. Maple, Dirk K. Morr and Pengcheng Dai. Nature Communications doi:10.1038/ncomms12774 (2016)
  6. "Correlated impurities and intrinsic spin liquid physics in the kagome material Herbertsmithite" by Tian-Heng Han, M. R. Norman, J.-J. Wen, Jose A. Rodriguez-Rivera, Joel S. Helton, Collin Broholm, Young S. Lee. Phys. Rev. B 94 060409(R) (2016)
  7. "Modulated magnetism and anomalous electronic transport in Ce3Cu4As4O2" by Jiakui K. Wang, Shan Wu, Yiming Qiu, Jose A. Rodriguez-Rivera, Qingzhen Huang, C. Broholm, and E. Morosan. Phys. Rev. B. 94, 064430 (2016)
  8. "Do Quantum Spin Liquids exist?" by Takashi Imai and Young S. Lee. Physics Today 69(8), 30 (2016)
  9. "Physical Realization of a New Quantum Spin Liquid Based on a Novel Frustration Mechanism" by C. Balz, B. Lake, J. Reuther, H. Luetkens, R. Schonemann, T. Herrmannsdorfer, Y. Singh, A.T.M.N. Islam, E.M. Wheeler, Jose A Rodriguez-Rivera, G.G. Simeoni, C. Baines, H. Ryll. Nature Physics 12, 942–949 (2016).  
  10. "Solitary magnons in the S = 5/2 antiferromagnet-CaFe2O4" by C. Stock, E. E. Rodriguez, N. Lee, M. A. Green, F. Demmel, R. A. Ewings, P. Fouquet, M. Laver, Ch. Niedermayer, Y. Su, K. Nemkovskiy, J. A. Rodriguez-Rivera, and S. -W. Cheong. Phys. Rev. Lett.  117 017201 (2016)
  11. "Effective spin-1/2 scalar chiral order on kagome lattices in Nd3Sb3Mg2O14" by A. Scheie, M. Sanders, J. Krizan, Yiming Qiu, R.J. Cava and C. Broholm. Phys. Rev. B 93 180407(R) (2016)
  12. "Static and dynamic XY-like short-range order in a frustrated magnet with exchange disorder ", by K.A. Ross, J.W. Krizan, J.A. Rodriguez-Rivera, R.J. Cava, and C.L. Broholm. Phys. Rev. B 93 014433 (2016).




  1. "Single to multiquasiparticle excitations in the itinerant helical magnet CeRhIn5", by C. Stock, J. A. Rodriguez-Rivera, K. Schmalzl, E. E. Rodriguez, A. Stunault, and C. Petrovic . Phys. Rev. Lett. 114, 247005 (2015)
  2. "Magnetic order in α-RuCl3: A honeycomb-lattice quantum magnet with strong spin-orbit coupling", by J. A. Sears, M. Songvilay, K. W. Plumb, J. P. Clancy, Y. Qiu, Y. Zhao, D. Parshall, and Young-June Kim. Phys. Rev. B 91, 144420 (2015).
  3. "Competition between the inter- and intra-sublattice interactions in Yb2V2O7 ", by Z. L. Dun, J. Ma, H. B. Cao, Y. Qiu, J. R. D. Copley, T. Hong, M. Matsuda, J. G. Cheng, M. Lee, E. S. Choi, S. Johnston, and H. D. Zhou. Phys. Rev. B 91, 064425 (2015).
  4. "Low energy phonon and superconductivity in Sn0.8In0.2 Te", by Zhijun Xu, J. A. Schneeloch, R. D. Zhong, J. A. Rodriguez-Rivera, L. W. Harriger, R. J. Birgeneau, G. D. Gu, J. M. Tranquada, and Guangyong Xu. Phys. Rev. B 91, 054522 (2015).
  5. "Disorder from order among anisotropic next-nearest-neighbor Ising spin chains in SrHo2O4", byJ.-J. Wen, W. Tian, V. O. Garlea, S. M. Koohpayeh, T. M. McQueen, H.-F. Li,4 J.-Q. Yan, J. A. Rodriguez-Rivera, D. Vaknin, and C. L. Broholm. Phys.Rev. B 91, 054424 (2015).
  6. "Quantum Critical Fluctuations in the Heavy Fermion compound Ce(Ni0.935Pd0.065)2Ge2", by  C. H. Wang, J. M. Lawrence, A. D. Christianson, S. Chang, J. A. Rodriguez-Rivera, C. Stock, J. W. Lynn, A. A. Podlesnyak, R. Baumbach, E. D. Bauer, K. Gofryk, F. Ronning, J. D. Thompson, and K. J. McClellan, Journal of Physics: Condensed Matter 27 (1), 015602 (2015).




  1. "Configurationally degenerate uctuating order in the ground state of Na4Ir3O8", by Rebecca Dally, Tom Hogan, Alex Amato, Hubertus Luetkens, Chris Baines, Jose Rodriguez-Rivera, Michael J. Graf, and Stephen D. Wilson. Phys. Rev. Lett. 113, 247601 (2014)
  2. "Soft striped magnetic fluctuations competing with superconductivity in Fe1+xTe”, by C. Stock, E. E. Rodriguez, O. Sobolev, J. A. Rodriguez-Rivera, R.A. Ewings, J.W. Taylor, A. D. Christianson, and M. A. Green. Phys. Rev. B 90 121113(R) (2014)
  3. "Neutron-Scattering Evidence for a Periodically Modulated Superconducting Phase in the Underdoped Cuprate La1.905Ba0.095CuO4”, by Zhijun Xu, C. Stock, Songxue Chi, A. I. Kolesnikov, Guangyoung Xu, Genda Gu and J. M. Tranquada.  Phys. Rev. Lett. 113, 177002 (2014)
  4. "Modified magnetism within the coherence volume of superconducting Fe1+ySexTe1-x”, ", by J. Leiner,  V. Thampy, A. D. Christianson, D. L. Abernathy, M. B. Stone, M. D. Lumsden, A. S. Sefat, B. C. Sales, Jin Hu, Zhiqiang Mao, Wei Bao, and C. Broholm. Phys Rev B 90 100501(R) (2014)
  5. "Excitations in the quantum paramagnetic phase of the quasi-one-dimensional Ising magnet CoNb2O6 in a transverse field: Geometric frustration and quantum renormalization effects " by I. Cabrera, J. D. Thompson, R. Coldea, D. Prabhakaran, R. I. Bewley, T. Guidi, J. A. Rodriguez-Rivera and C. Stock Phys Rev B 90, 014418 (2014)
  6. "Magnetic structure of the conductive triangular-lattice antiferromagnet PdCrO2  renormalization effects " by Hiroshi Takatsu, Gwilherm Nénert, Hiroaki Kadowaki, Hideki Yoshizawa, Mechthild Enderle, Shingo Yonezawa, Yoshiteru Maeno, Jungeun Kim, Naruki Tsuji, Masaki Takata, Yang Zhao, Mark Green, and Collin Broholm Phys Rev B 89, 104408 (2014)
  7. "Magnetic ordering induced by interladder coupling in the spin-1/2 Heisenberg two-leg ladder antiferromagnet C9H18N2CuBr4 " by Tao Hong, K. P. Schmidt, K. Coester, F. F. Awwadi, M. M. Turnbull, Y. Qiu,, J. A. Rodriguez-Rivera, M. Zhu, X. Ke, C. P. Aoyama, Y. Takano, Huibo Cao, W. Tian, J. Ma, R. Custelcean, H. D. Zhou, and M. Matsuda. Phys. Rev. B 89, 174432 (2014)
  8. "Molecular Quantum Magnetism in LiZn2Mo3O8" by M. MourigalW. T. FuhrmanJ. P. SheckeltonA. WartelleJ. A. Rodriguez-RiveraT. M. McQueen anb C. L. Broholm Phys. Rev. Lett. 112, 027202 (2014)
  9. "The Role of Random Electric Field in Relaxors" by D. Phelan, C. Stock, J. A. Rodriguez-Rivera, S. Chi, J. Leao, X. Long, A. A Bokov, Zou-Guang Ye, P. Ganesh and P. M. Gehring. Proc. Natl. Acad. Sci. (2014)




  1. "Magnetic and structural properties near the liftshitz point in Fe1-xTex" by E. E. Rodriguez, D. A. Sokolov, C. Stock, M. A. Green, O. Sobolev, Jose A. Rodriguez-Rivera, H. Cao, and A. Daoud-Aladine. Phys. Rev. B 88 165110 (2013)
  2. "Quantum fluctuations in spin-ice-like Pr2Zr2O7" by K. Kimura, S. Nakatsuji, J.-J. Wen, C. Broholm, M. B. Stone, E. Nishibori and H. Sawa. Nature Communications 4, 1934 (2013)
  3. "Magneto-polaron Formation and Field-Induced Effects with Diluted Doping in LaCo1-yNiyO3" by J. Yu, D. Phelan, J. A. Rodriguez-Rivera, A. Podlesnyak and Despina Louca. J. Supercond. Nov. Magn 26 pp 2627-2632 (2013)
  4. "Wide Angle Polarization Analysis With Neutron Spin Filters" by Q. Ye, T. R. Gentile, J. Anderson, C. Broholm, W. C. Chen, Z. DeLand, R. W. Erwin, C. B. Fu, J. Fuller, A. Kirchhoff, J. A. Rodriguez-Rivera, V. Thampy, T.G. Walker, S. Watson. Physics Procedia 42, 206-212 (2013)



  1. "Fractionalized excitations in the spin-liquid state of a kagome-lattice antiferromagnetby Tian-Heng Han, Joel S. Helton, Shaoyan Chu, Daniel G. Nocera, Jose A. Rodriguez-Rivera, Collin Broholm & Young S. Lee.  Nature 492, 406-410 (2012). 
  2. "Magnetic field splitting of the spin-resonace in CeCoIn5" by C. Stock, C. Broholm, Y. Zhao, F. Demmel, H. J. Kang, K. C. Rule and C. Petrovic. Phys Rev. Lett 109, 167207 (2012).
  3. "Spin-Orbital Sorth-Range Order on a Honeycomb-Based lattice" by S. Nakatsuji, K. Kuga, K. Kimura, R. Satake, N. Katayama, E. Nishibori, H. Sawa, R. Ishii, M. Hagiwara, F. Bridges, T. U. Ito, W. Higemoto, Y. Karaki, M. Halim, A. A. Nugroho, J. A. Rodriguez-Rivera, M. A. Green, and C. Broholm. Science 336 (6081): 559-563 (2012).
  4. "Friedel-like Oscillations from Interstitial Iron in Superconducting Fe1+yTe0.62Se0.38" by V. Thampy, J. Kang, J. A. Rodriguez-Rivera, W. Bao, A. T. Savici, J. Hu, T. J. Liu, B. Qian, D. Fobes, Z. Q. Mao, C. B. Fu, W. C. Chen, Q. Ye, R. W. Erwin, T. R. Gentile, Z. Tesanovic, and C. Broholm. Phys. Rev. Lett. 108, 107002 (2012)



  1. "Anisotropic Critical Magnetic Fluctuations in the Ferromagnetic Superconductor UCoGe" by C. Stock, D. A. Sokolov, P. Bourges, P. H. Tobash, K. Gofryk, F. Ronning, E. D. Bauer, K. C. Rule, and A. D. Huxley. Phys. Rev. Lett. 107, 187202 (2011)
  2. "Common origin of the two types of magnetic fluctuations in iron chalcogenides" by Songxue Chi, J. A. Rodriguez-Rivera, J. W. Lynn, Chenglin Zhang, D. Phelan, D. K. Singh, R. Paul, Pengcheng Dai Phys. Rev. B. 84, 214407 (2011)
  3. "Neutron Scattering Studies of spin exitations in hole-doped Ba0.67K0.33Fe2As2 superconductors"by Chenglin Zhang, Meng Wang, Miaoyin Wang, Mengshu Liu, Jun Zhao, D. L. Abernathy, Karol Marty, M. D. Lumsden, Songxue Chi, Sung Chang, J. A. Rodriguez-Rivera, J. W. Lynn, Huiqian Luo, Tao Xiang, Jiangping Hu, Pengcheng Dai. Sci. Rep. 1, 115 (2011)
  4. "Field-Induced Quantum Fluctuations in Heavy Fermion (Pressure-Induced) Superconductor CeCu2Ge2by D. K. Singh, A. Thamizhavel, J.W. Lynn, C. Stock, J. A. Rodriguez-Rivera, and T. Herman. Sci. Rep. 1, 117 (2011)
  5. "Magnetic field effect on the static antiferromagnetic order and spin excitations in underdoped iron arsenide superconductor BaFe1.92Ni0.08As2by Miaoyin Wang, Huiqian Luo, Meng Wang, Songxue Chi, Jose A. Rodriguez-Rivera, Deepak Singh, Sung Chang, Jeffrey W. Lynn, and Pengcheng Dai. Phys. Rev. B 83, 094516 (2011)
  6. "Magnetic-crystallographic phase diagram of the superconducting parent compound Fe1+xTe" by E. E. Rodriguez, C. Stock, P. Zajdel, K. L. Krycka, C. F. Majkrzak, P. Zavalij and M. A. Green. Phys. Rev. B 84, 064403 (2011)
  7. "Gapped spin fluctuations and interstitial iron in the Fe1+xTe parent compound" by Chris Stock, Efrain E. Rodriguez, Mark A. Green and Jose A. Rodriguez-Rivera. Phys. Rev. B 84, 045124 (2011)
  8. "Incommensurate Magnetism in FeAs Strips: Neutron Scattering from CaFe4As3" by Yusuke Nambu, Liang L. Zhao, Emilia Morosan, Kyoo Kim, Gabriel Kotliar, Pawel Zajdel, Mark A. Green, William Ratcliff, Jose A. Rodriguez-Rivera, and Collin Broholm. Phys. Rev. Lett. 106, 037201 (2011)
  9. "Quantum critical behavior in the heavy Fermion single crystal Ce(Ni0.935Pd0.065)2Ge2by C. H. Wang, J. M. Lawrence, A. D. Christianson, S. Chang, E. D. Bauer, K. Gofryk, F. Ronning, J. D. Thompson, K. J. McClellan, J. A. Rodriguez-Rivera and J. W. Lynn. J. Phys.: Conf. Ser. 273 012018 (2011)



  1. "From (π, 0) magnetic order to superconductivity with (π, π) magnetic resonance in Fe1.02(Te1-xSex)" by Tijiang Liu , Jin Hu , Bin Qian , David Fobes , Wei Bao , Manfred Reehuis , Simon Kimber , Karel Prokes , Slavomir Matas , Dimitri Argyriou , Arno Hiess , Aurelian Rotaru , Huy Pham , Leonard Spinu , Yiming Qiu , Vivek Thampy, Andrei Savici , Jose Rodriguez-Rivera and Collin Broholm. Nature Materials 9, 718-720 (2010)
  2. "A wide angle neutron spin filter system using polarized 3He" by C.B. Fu, T.R. Gentile, G.L. Jones, W.C. Chen, R. Erwin, S. Watson, C. Broholm, J.A. Rodriguez-Rivera, and J. Scherschligt. Physica B 406, 2419 (2010).



2009 and before

  1. "MACS-a new high intensity cold neutron spectrometer at NIST" by J. A. Rodriguez, D. M. Adler, P. C. Brand, C. Broholm, J. C. Cook, C. Brocker, R. Hammond, Z. Huang, P. Hundertmark, J. W. Lynn, N. C. Maliszewskyj, J. Moyer, J. Orndorff, D. Pierce, T. D. Pike, G. Scharfstein, S. A. Smee and R. Vilaseca. Meas. Sci. Technol. 19 034023 (2008)
  2. "MACS Low Background Doubly Focusing Neutron Monochromator" by S. A. Smee, J. D. Orndorff, G. A. Scharfstein, Y. Qui, P. C. Brand, C. L. Broholm, and D. K. Anand. Appl. Phys. A 74, Suppement 1, s255-s257 (2002)
  3. "An Elastic, Low Background Vertical Focusing Element For a Doubly Focusing Neutron Monochromator" by S. A. Smee, P. C. Brand, D. D. Barry, C. Broholm, and D. K. Anand. Nucl. Instrum. Meth. A, 466, 513-526 (2001)
  4. "Proposal for a Doubly Focusing Cold Neutron Spectrometer at NIST" by C. Broholm. Nucl. Instr. and Meth. in Physics Res. A 369, 169 (1996).