SSRL Beam Line Infrastructure Update February 2002

1. SSRL Beam Line InfrastructureUpdateFebruary 2002 • Recent Upgrade Work • Expectations for 2003-2004 SSRL Beam Line Infrastructure - Tom Rabedeau

2. Mono Upgrades 2001-2002 Run LN Monos on BLs 6-2, 9-3, and 10-2 • LN monochromators are scheduled for installation this run on the following BL: • BL9-3 (installed) • BL10-2 (installed) • BL6-2 (4/29 installation) • BL4-3 & 7-3 in fab SSRL Beam Line Infrastructure - Tom Rabedeau

3. 11-2: norm. resol. (2 mm slits) 11-2: high res. (0.25 mm slits) 1.25 eV fwhm 1.03 eV fwhm 4-3: high resol. (0.5 mm slits) 1.33 eV fwhm BL11-2 Optical PerformanceSiderite pre-edge feature (Farges) “Under normal resolution BL11-2 achieves an excellent compromise between resolution and signal/noise, equivalent, if not better, of a "state-of-the-art" undulator beam line on a 3rd generation source.” F. Farges SSRL Beam Line Infrastructure - Tom Rabedeau

4. BL9-3 LN MonochromatorInitial Results • Little change in flow-induced noise below 75 Hz for flow rates up to 500 lit/hr • 0.07 eV maximum edge shift at Cu K edge over 16 hrs including SPEAR fill (ΔE/E=7.8x10-5 eV at 9 keV) • ~0.02% I0 noise at copper K edge • 1.7 eV maximum edge shift at Te K edge over 12 hrs including SPEAR fill (ΔE/E=5.3x10-5 eV at 31.8 keV; <0.2 eV typical scan-to-scan shift) • ~0.07% I0 noise at Te K edge • Shift in crystal tuning from 5 keV to 37 keV less than a Darwin width SSRL Beam Line Infrastructure - Tom Rabedeau

5. BL11-3 – New Beam LineCharacteristics & Status • quasi-fixed energy side station serving macromolecular crystallography and materials science scattering communities • characteristics • side scattering, focusing, I-beam shaped crystal, Si(311) mono provides 2.25:1 source horiz. demagnification • 1 meter long, Rh-coated, quasi-elliptical, Si mirror provides 3.5:1 source vertical demagnification (15 keV cutoff) • kappa diffractometer w/ area and point detectors • energy = 12720 +/- 75 eV with 0.18% band pass • focus fwhm = 3mm x 0.1mm (SPEAR3) • flux = 4x1012/sec (SPEAR3 at 500 mA) • Status • installation scheduled to start 4/10/02 SSRL Beam Line Infrastructure - Tom Rabedeau

6. BL9-2 (1mr accept) SP2 SP3 SPEAR3 Opportunities • 5-15 fold flux gain • 5-200 fold brightness • gain • enhanced beam stability • world class soft x-ray • undulator performance • small gap hard x-ray • undulator opportunities • performance vs SPEAR2: SSRL Beam Line Infrastructure - Tom Rabedeau

7. SPEAR3 Beam Line UpgradesGoals and Priorities • Objective: • Upgrade beam line optics, etc to facilitate optimal exploitation of the SPEAR3 source characteristics. • Schedule/Priority: • All front ends – 500 mA capable on SPEAR3 startup (Fall 2003) • Insertion Device (ID) beam lines – 500 mA capable as soon as possible given resource limitations • Bend magnet beam lines – 500 mA capable (though perhaps with degraded capability) as soon as feasible given resource limitations • Funding: • DOE BES, DOE BER, NIH NCRR,... SSRL Beam Line Infrastructure - Tom Rabedeau

8. SP2 SP3 BL4-2 focus w/ 2mr accept. SPEAR3 Beam Line UpgradesProgram Elements • Evaluate and optimize beam line functionality in the context of the present/future user community needs • Mask, filter, window, and optic upgrades as required to cope with the power increase • Focusing optic upgrades to faithfully image the source • Position monitor, optic, and support structure improvements to preserve SPEAR3 stability • Shielding modifications to ensure SSRL continues to operate safely • New insertion devices for BL 4, BL 7 to fully utilize the SPEAR3 source characteristics and provide new capabilities SSRL Beam Line Infrastructure - Tom Rabedeau

9. SPEAR3 Beam Line UpgradesOptical Configurations • Most beam lines will experience optics improvements but relatively modest conceptual changes. • There are, of course, exceptions to this rule. A few of the more notable planned exceptions are: • BL5-2, 5-3 - the Locust monochromator will be replaced and the beam line optimized for 250-1200+ eV operations (currently 10-1200 eV); • BL7-2 - the conventional toroidal mirror focusing system will be replaced with a cylindrical mirror and a sagittal focusing monochromator for improved high energy performance; • BL4-3 & BL7-3 - add collimating mirror optics; • BL6-2 - the optics will be transformed to a double mirror system similar to BLs 9-2, 9-3, and 11-2 and optimized for >5000 eV operations; • BL3-3 - the beam line will be optimized for 1750-5000 eV operations; • BL8-2 - will be optimized for 250-1900 eV operations with the inclusion of a multilayer grating and reconfigured mirror optics; • BL4, BL7 which will benefit from new 20-pole, 2.1-T wigglers. SSRL Beam Line Infrastructure - Tom Rabedeau

10. SPEAR3 Beam Line UpgradesAnticipated Status when SPEAR3 Starts Operations • These plans are based on current funding projections. The project may be expedited if additional funding is identified, or delayed if anticipated funding does not materialize: • BL 5, 6, 9, 10, 11 should be completed in January 2004. • BL 1, 2, 3, 8 will need additional work to make them 500 mA, compatible with SPEAR3. • BL 4, 7 will need additional work. BL 7 is anticipated to be completed ~6/04; BL4 in 2006, although BL4-2 will be 100 mA capable with new wiggler. SSRL Beam Line Infrastructure - Tom Rabedeau