Table 8.1.5.1

International
Tables for
Crystallography
Volume F
Crystallography of biological molecules
Edited by M. G. Rossmann and E. Arnold

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International Tables for Crystallography (2006). Vol. F. ch. 8.1, p. 160 | 1 | 2 |

J. R. Helliwell^a ^*

^aDepartment of Chemistry, University of Manchester, M13 9PL, England
Correspondence e-mail: john.helliwell@man.ac.uk

Table 8.1.5.1 | top | pdf |
A comparison of the parameter list for the 2 GeV SRS, 1997, and the new higher-energy machine for the UK, DIAMOND

S/C = superconducting magnet; MW = multipole wiggler (permanent magnet design).

	SRS ^†	DIAMOND ^‡
Storage ring energy	2 GeV	3 GeV ^§
Circumference	96 m	350 m ^¶
Beam emittance	110 nm rad	15 nm rad
Beam current after injection	300 mA	300 mA
Typical dipole beam source sizes (σ)
horizontal	900 µm	400 µm
vertical	200 µm	150 µm
Critical energy
dipole	3.2 keV	20 keV (S/C)
wiggler	13.3 keV (S/C)	10 keV (MW)

^†From Munro (1997)

.
^‡From Suller (1994)

and Suller (1998)

.
^§Up to 3.5 GeV.
^¶A larger circumference is now proposed.