Engineering Materials Beamline Quan Cai IHEP 16122019 The
Engineering Materials Beamline Quan Cai IHEP 16/12/2019 The 2 nd Meeting of HEPS International Advisory Committee High Energy Photon Source - Beijing
Table of Contents • Scope and objective (WBS, work description) • Outcome of the review 2018 (response to recommendations) • Status of work progress, schedule • Summary of authorized changes (change of scope) • Manpower • Risks and mitigation • Value engineering (cost reduction, additional benefits) • Summary - Major upcoming milestones HEPS · The 2 nd Meeting of HEPS IAC, IHEP, Dec. 16 -18, 2019 2
Scopes and Objectives l Test the real samples… l In real conditions. . . l In sub-micron scale… Real samples: Irregular shape & Inner structure… Real conditions: Extreme temperature & High load… HEPS · The 2 nd Meeting of HEPS IAC, IHEP, Dec. 16 -18, 2019 Sub-micron scale: Grain boundary & Crack formation… 3
Experiment methods include but not limited to: l High energy diffraction (in/ex situ) l High energy small angle scattering l Pair distribution function l High energy 3 D diffraction l X-ray tomography l …… HEPS · The 2 nd Meeting of HEPS IAC, IHEP, Dec. 16 -18, 2019 4
l Specifications l High photon flux on high energy (>1× 1012 @100 ke. V) Insertion device optimized at 100 ke. V l Monochromatic, tunable beam (50 ke. V~170 ke. V, ΔE/E ~1× 10 -3 @100 ke. V) Double crystal Laue monochromator, fixed exit l Micro beam (~5 m and submicron) Ni based CRLs, made by LIGA technology HEPS · The 2 nd Meeting of HEPS IAC, IHEP, Dec. 16 -18, 2019 5
l WBS 2021. 6 2024. 5 2025. 1 HEPS · The 2 nd Meeting of HEPS IAC, IHEP, Dec. 16 -18, 2019 6
Response to Last Review Type Recommendation Description Response The beamline design is based on a double Laue monochromator and CRLs for focusing. The design is simple and should work. The beamline uses Attenuators based on C and Si. C. As the lowest energy is 60 ke. V, other attenuator materials (CVD diamond, Cu, …) can perhaps be used more effectively and should be evaluated for use. Current filters’ design (Si. C) is based on the advices XPD, NSLSII. FEA shows the temperature of filter will below 1000°C and it is safe to Si. C. But until now we don’t find a solution for Cu filter by calculation. Even the FEA result of CVD showed that temperature of diamond window will be higher than 600°C but the commercial windows work under 200°C. (Diamond turns into graphite? ) HEPS · The 2 nd Meeting of HEPS IAC, IHEP, Dec. 16 -18, 2019 7
Type Recommendation Description Response For micro-focusing, two types of lenses are proposed: commercially available Al CRLs and in-house developed Ni based Kinoform lenses. The gain achieved by using the Kinoform lenses compared to the commercial Al CRLs should be quantified. According to www. rxoptics. de, the gain of commercial Al CRLs is about 1. 5 e 4 on 100 ke. V, and the Ni based Kinoform lenses is estimated about 3 e 4 when we set both of the apertures as 480 um*480 um. HEPS · The 2 nd Meeting of HEPS IAC, IHEP, Dec. 16 -18, 2019 8
Type Recommendation Description Response The ray tracing simulations provided for micro-focused beams indicate a photon flux of ~ 10^10 photon/sec at 100 ke. V, which is about two orders of magnitude smaller than the beamline specification of 10^12 photons/sec. It would be good to look at the design of the micro-focusing optics with an aim to improve the flux in the micro-focus beam. Yes. We are trying to us use our in-house Kinoform lens to take place all commercial CRLs in this beamline. The final flux of the micro-focus beam can be 10^11 photons/sec at 100 ke. V. The absorption of Ni causes the main loss of flux. HEPS · The 2 nd Meeting of HEPS IAC, IHEP, Dec. 16 -18, 2019 9
Response to BL Review’s Committee Type Recommendation Description Response In order to have more flexible beam conditioning via the optics, it would be beneficial to open for including an up-stream transfocator for conditioning the incident beam. The transfocator could work both to collect more photons on the first monochromator crystal (collimator), and allow operation with a virtual source between the transfocator and the monochromator. We will evaluate the possibility to use our in-house CRLs on the white beam. Other methods to increase the beam divergence and bandwidth will be considered seriously. HEPS · The 2 nd Meeting of HEPS IAC, IHEP, Dec. 16 -18, 2019 10
Type Recommendation Description Response Linearly focused beams would be of major importance to many applications, and should be provided. It would be profitable to have the option at both B and C hutches, and through most of the applicable energy range. The kinoform lenses would serve for this purpose, if successfully developed. If not, 1 D CRLs may have to be considered. Yes, we can provide 1 D focusing for users. Our Kinoform lens are very easy to switch between 1 D mode and 2 D mode. HEPS · The 2 nd Meeting of HEPS IAC, IHEP, Dec. 16 -18, 2019 11
Type Recommendation Description While the analysis is very versatile, we recommend installation of a top-end physical thermo-mechanical simulator, such as the Gleeble machine suite. It is an upscale of the proposed deformation dilatometer and widely used in industrial laboratories for physical processing simulations. HEPS · The 2 nd Meeting of HEPS IAC, IHEP, Dec. 16 -18, 2019 Response We will purchase a Gleeble machine to take place our furnace or dilatometer if our budget is enough. 12
Status l Beamline layout FOE Hutch A: General XRD & 3 D XRD HEPS · The 2 nd Meeting of HEPS IAC, IHEP, Dec. 16 -18, 2019 Hutch B: In situ experiments & large samples Hutch C: SAXS & sub-micron experiments 13
l Double crystal Laue monochromator: commissioning finished Double Laue momochromator from HEPS-TF is running on 3 W 1, BSRF with an energy range of 40 -80 ke. V. HEPS · The 2 nd Meeting of HEPS IAC, IHEP, Dec. 16 -18, 2019 14
l Open for users Monochromator works since from Dec 6 th, and it will be modified to fit HEPS after 2021. 6. 30. HEPS · The 2 nd Meeting of HEPS IAC, IHEP, Dec. 16 -18, 2019 15
l In-house Kinoform lens: tested in P 07 B, Petra III Kinoform lens (designed for 100 ke. V) made by LIGA tested at P 07 B, Petra III on 87 ke. V. HEPS · The 2 nd Meeting of HEPS IAC, IHEP, Dec. 16 -18, 2019 1 D beam size was measured as 4 um and the gain is about 25 when the aperture is 400 um*400 um. 16
Authorized Changes Since Last Review l Sector: from high β to low β High β sector may not allow the ID gap down to 5 mm No obvious change when ID moves to a low β sector. HEPS · The 2 nd Meeting of HEPS IAC, IHEP, Dec. 16 -18, 2019 17
l Diffractometer By the recommendation of users, heavy load 2 -circle diffractometer was replaced by two goniometers which can shift each other. One for general diffraction and one for 3 D XRD. HEPS · The 2 nd Meeting of HEPS IAC, IHEP, Dec. 16 -18, 2019 18
l Granite support for detectors Ref: ESRF ID 31 A granite support structure will take place the cart to carry detectors in hutch B, that will bring the detectors the repeatability when we try to move them. HEPS · The 2 nd Meeting of HEPS IAC, IHEP, Dec. 16 -18, 2019 19
l Add a new focus for sub-micron XRD in Hutch C One set of Kinoform lens will be added to Hutch C. Due to the length of hutch, the u/v will be larger than 90: 1 and beam size can be down to sub-micron. HEPS · The 2 nd Meeting of HEPS IAC, IHEP, Dec. 16 -18, 2019 100 ke. V, ~500 nm 200 nm, ~5 1010 phs/s 20
Staffing Plan HEPS · The 2 nd Meeting of HEPS IAC, IHEP, Dec. 16 -18, 2019 21
Risks and Mitigation 1, Many unknown reasons may cause CPMU’s gap cannot close as designed. If it runs on big gap, the photon flux will be lower than we expected. It may take some time to solve the problem. 2, Trembling caused by cooling system or others is a challenge to the stability of Double Laue Monochromator. The cooling design will be optimized to avoid this. 3, Huber’s capacity is not sufficient. We need to place the order in 2 years advance or even longer. HEPS · The 2 nd Meeting of HEPS IAC, IHEP, Dec. 16 -18, 2019 22
Value Engineering l Branch beamline in the future (in phase 2? ) An example: side bounce Si(311) monochromator for 50 ke. V,2θ=8. 7°, the length of beamline can be set to 58 m. Branch beamline: 58 m to the source Low cost but doubled beamtime! HEPS · The 2 nd Meeting of HEPS IAC, IHEP, Dec. 16 -18, 2019 23
Summary l Milestones 2021. 6, TDR design finished; 2024. 5, beamline components delivered; 2024. 12, beamline installation finished; 2025. 9, beamline commissioning done; 2025. 12, final test, open to users. Branch beamline, 2028. 12? …… HEPS · The 2 nd Meeting of HEPS IAC, IHEP, Dec. 16 -18, 2019 24
Thank you for your attention! HEPS · The 2 nd Meeting of HEPS IAC, IHEP, Dec. 16 -18, 2019 25
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