IHEP PAPS SRF facility layout design Feisi He On behalf of colleagues in IHEP SRF group Institute of High Energy Physics (IHEP)

Outline Background The SRF facility Brief introduction to the PAPS project Future project that may need PAPS The SRF facility Layout and workflow Labs for R&D purpose Cryogenic system Public service facilities

PAPS project overview “Platform of Advanced Photon Source Technology R&D”, to provide infrastructure for construction of future project. Budget: 500M CNY funded by Beijing Gov. Construction: 2017.5-2020.6 Consist of 7 systems: RF system Cryogenic system Magnet technology Beam test X-ray optics X-ray detection X-ray application

PAPS-RF system The PAPS-RF system has two targets : Build a SRF facility Conduct R&D on cavities and ancillaries The SRF facility is biased on mass production for SRF projects Post-processing, clean assembly, VT/HT/conditioning of cavities, couplers, and cryomodules. Compatible of 166MHz, 325MHz, 500MHz, 650MHz, and 1.3GHz 200-400 cavities (couplers) per year ~20 cryomodules per year Support R&D on new material and new technology Total area of 4500 m2 Cryogenic system: 300W @ 2K PAPS-RF Testing Cavity VT Cavity HT CM conditioning Coupler conditioning Clean assembly Labs Post processing Microwave & LLRF SC materials Cavity R&D

Outline Background The SRF facility Brief introduction to the PAPS project Future project that may need PAPS The SRF facility Layout and workflow Labs for R&D purpose Cryogenic system Public service facilities

Future project: HEPS High Energy Photon Source will be built in Beijing by IHEP from 2018 to 2024 Budget: 4.8B CNY

Future project: HEPS (2) Solid-state amplifier: 166MHz, 200kW 500MHz, 75kW Klystron: 500MHz, 250kW

Future project: CIADS Approved by Chinese government in Dec. 2015 Budget: >1.8B CNY Proton CW linac > 250MeV In collaboration of IMP, IHEP, and many other institutes

Future project: CIADS (2) Current optics design: HWR009 HWR019 56 of Double spoke β0=0.42

Future project: Shanghai-XFEL Approved with 10B CNY, to be built in 7 years Dominated by Shanghai-Tech University and Sinap at Shanghai 8GeV CW Linac, with ~700 of 1.3GHz TESLA cavities 8 cavities in one cryomodule

Future project: CEPC Proposed by IHEP, pre-research in progress Circular electron-positron collider at 2 x 120GeV e+e- Higgs (Z) factory for precision measurement of the Higgs boson (and the Z boson) Ecm~240GeV, luminosity ~2×1034 cm-2s-1, two detectors, 1M ZH events in 10yrs

Future project: CEPC (2) ~600 of SRF 2-cell elliptical cavities at 650MHz needed. 2 or 6 cavities in one cryomodule. 5-cell cavities at 650MHz are possible according to optics design Operation specification: Q0>2e10@Eacc=16MV/m VT specification: Q0>4e10@Eacc=22MV/m

Outline Background The SRF facility Brief introduction to the PAPS project Future project that may need PAPS The SRF facility Layout and workflow Labs for R&D purpose Cryogenic system Public service facilities

Layout of the SRF facility 3 VT dewars 2 HT caves 500m2 CR FPC aging in CR ISO7 Optic inspec. Pre-tuning Furnace Nb3Sn oven Nb-Cu sputtering T-mapping Second sound …… Blue lines: Cavity VT workflow Black lines: FPC conditioning workflow Red lines: CM assembly and test workflow

Workflow for vertical test Compatible with 166/325/500/650/1300 MHz Four 1.3GHz or two 650MHz cavities in one single test 1 VT/wk with HPR, or 2 VTs/wk with cavities ready to test VT workflow: ② D1, validation ④ D2-5, HPR+dry +assembly ⑤ D5-8, baking +mounting ⑥ D8-12, Cool+VT +Warm ⑤ D13, dismount

② 频率/漏率检查 ④ (HPR+洁净组装) ⑤ 上吊架 ⑥ 吊入竖井垂测 ⑤ 出杜瓦 ④ (HPR+)腔串组装 或⑧ 实验/存放 1 2 VT workflow ② Validation(1d) ④ HPR+dry+assembly (4d) ⑤ baking+mounting (3d) ⑥ Cool+VT+warm (4d) ⑤ Dismount (1d) ② 频率/漏率检查 ④ (HPR+洁净组装) ⑤ 上吊架 ⑥ 吊入竖井垂测 ⑤ 出杜瓦 ④ (HPR+)腔串组装 或⑧ 实验/存放

② 频率/漏率检查 ④ (HPR+洁净组装) ⑤ 上吊架 ⑥ 吊入竖井垂测 ⑤ 出杜瓦 ④ (HPR+)腔串组装 或⑧ 实验/存放 1 2 3 4 VT workflow ② Validation (1d) ④ HPR+dry+assembly (4d) ⑤ baking+mounting (3d) ⑥ Cool+VT+warm (4d) ⑤ Dismount (1d) ② 频率/漏率检查 ④ (HPR+洁净组装) ⑤ 上吊架 ⑥ 吊入竖井垂测 ⑤ 出杜瓦 ④ (HPR+)腔串组装 或⑧ 实验/存放

② 频率/漏率检查 ④ (HPR+洁净组装) ⑤ 上吊架 ⑥ 吊入竖井垂测 ⑤ 出杜瓦 ④ (HPR+)腔串组装 或⑧ 实验/存放 5 6 7 8 VT workflow ② Validation (1d) ④ HPR+dry+assembly (4d) ⑤ baking+mounting (3d) ⑥ Cool+VT+warm (4d) ⑤ Dismount (1d) ② 频率/漏率检查 ④ (HPR+洁净组装) ⑤ 上吊架 ⑥ 吊入竖井垂测 ⑤ 出杜瓦 ④ (HPR+)腔串组装 或⑧ 实验/存放 1 2 3 4

② 频率/漏率检查 ④ (HPR+洁净组装) ⑤ 上吊架 ⑥ 吊入竖井垂测 ⑤ 出杜瓦 ④ (HPR+)腔串组装 或⑧ 实验/存放 VT workflow ② Validation (1d) ④ HPR+dry+assembly (4d) ⑤ baking+mounting (3d) ⑥ Cool+VT+warm (4d) ⑤ Dismount (1d) ② 频率/漏率检查 ④ (HPR+洁净组装) ⑤ 上吊架 ⑥ 吊入竖井垂测 ⑤ 出杜瓦 ④ (HPR+)腔串组装 或⑧ 实验/存放 5 1 6 2 7 3 8 4

② 频率/漏率检查 ④ (HPR+洁净组装) ⑤ 上吊架 ⑥ 吊入竖井垂测 ⑤ 出杜瓦 ④ (HPR+)腔串组装 或⑧ 实验/存放 1 2 3 4 VT workflow ② Validation (1d) ④ HPR+dry+assembly (4d) ⑤ baking+mounting (3d) ⑥ Cool+VT+warm (4d) ⑤ Dismount (1d) ② 频率/漏率检查 ④ (HPR+洁净组装) ⑤ 上吊架 ⑥ 吊入竖井垂测 ⑤ 出杜瓦 ④ (HPR+)腔串组装 或⑧ 实验/存放 5 6 7 8

Workflow for FPC conditioning Compatible with 166/325/500/650/1300 MHz single test stand Upgradable for multiple test stand run at the same time FPC workflow: ② D1-2, leak check ③ D3-10, cleaning +assembly+bake +conditioning +disassembly +Storage Or④String assembly

② 频率/漏率检查 ④ (HPR+洁净组装) ⑤ 上吊架 ⑥ 吊入竖井垂测 ⑤ 出杜瓦 ④ (HPR+)腔串组装 或⑧ 实验/存放 FPC workflow ② Reception+Leak check+S11 (2d) ③ Cleaning+assembly+Conditioning +disassembly+Storage Or ④ String assembly ② 频率/漏率检查 ④ (HPR+洁净组装) ⑤ 上吊架 ⑥ 吊入竖井垂测 ⑤ 出杜瓦 ④ (HPR+)腔串组装 或⑧ 实验/存放

② 频率/漏率检查 ④ (HPR+洁净组装) ⑤ 上吊架 ⑥ 吊入竖井垂测 ⑤ 出杜瓦 ④ (HPR+)腔串组装 或⑧ 实验/存放 FPC workflow ② Reception+Leak check+S11 ③ Cleaning+assembly+Conditioning +disassembly+Storage (8d) Or ④ String assembly ② 频率/漏率检查 ④ (HPR+洁净组装) ⑤ 上吊架 ⑥ 吊入竖井垂测 ⑤ 出杜瓦 ④ (HPR+)腔串组装 或⑧ 实验/存放

② 频率/漏率检查 ④ (HPR+洁净组装) ⑤ 上吊架 ⑥ 吊入竖井垂测 ⑤ 出杜瓦 ④ (HPR+)腔串组装 或⑧ 实验/存放 FPC workflow ② Reception+Leak check+S11 ③ Cleaning+assembly+Conditioning +disassembly+Storage Or ④ String assembly ② 频率/漏率检查 ④ (HPR+洁净组装) ⑤ 上吊架 ⑥ 吊入竖井垂测 ⑤ 出杜瓦 ④ (HPR+)腔串组装 或⑧ 实验/存放

Workflow for CM assembly and test Two shielding buckers with one cryostat for HT of single cavities at 166/500/650MHz Upgradable for full test capacity of two CMs/week at a specific frequency CM workflow: ①③ D0, storage ⑦ D1-15, Cold mass assembly ④ D16-24, Cryomodule ⑤⑥ D25-44, HT ⑤① D45, shipment

② 频率/漏率检查 ④ (HPR+洁净组装) ⑤ 上吊架 ⑥ 吊入竖井垂测 ⑤ 出杜瓦 ④ (HPR+)腔串组装 或⑧ 实验/存放 1 2 3 4 1 2 3 4 5 6 7 8 CM workflow ①③ Storage (1d) ⑦ Cold mass assembly (15d) ④ CM assembly (9d) ⑤⑥ HT preparation, cool (10d) ⑥ HT, warm (10d) ①or③ Shipment or storage (1d) ② 频率/漏率检查 ④ (HPR+洁净组装) ⑤ 上吊架 ⑥ 吊入竖井垂测 ⑤ 出杜瓦 ④ (HPR+)腔串组装 或⑧ 实验/存放

② 频率/漏率检查 ④ (HPR+洁净组装) ⑤ 上吊架 ⑥ 吊入竖井垂测 ⑤ 出杜瓦 ④ (HPR+)腔串组装 或⑧ 实验/存放 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 CM workflow ①③ Storage (1d) ⑦ Cold mass assembly (15d) ④ CM assembly (9d) ⑤⑥ HT preparation, cool (10d) ⑥ HT, warm (10d) ①or③ Shipment or storage (1d) ② 频率/漏率检查 ④ (HPR+洁净组装) ⑤ 上吊架 ⑥ 吊入竖井垂测 ⑤ 出杜瓦 ④ (HPR+)腔串组装 或⑧ 实验/存放

② 频率/漏率检查 ④ (HPR+洁净组装) ⑤ 上吊架 ⑥ 吊入竖井垂测 ⑤ 出杜瓦 ④ (HPR+)腔串组装 或⑧ 实验/存放 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 CM workflow ①③ Storage (1d) ⑦ Cold mass assembly (15d) ④ CM assembly (9d) ⑤⑥ HT preparation, cool (10d) ⑥ HT, warm (10d) ①or③ Shipment or storage (1d) ② 频率/漏率检查 ④ (HPR+洁净组装) ⑤ 上吊架 ⑥ 吊入竖井垂测 ⑤ 出杜瓦 ④ (HPR+)腔串组装 或⑧ 实验/存放

垂直测试动线 ② 频率/漏率检查 ④ (HPR+洁净组装) ⑤ 上吊架 ⑥ 吊入竖井垂测 ⑤ 出杜瓦 ④ (HPR+)腔串组装 CM workflow ①③ Storage (1d) ⑦ Cold mass assembly (15d) ④ CM assembly (9d) ⑤⑥ HT preparation, cool (10d) ⑥ HT, warm (10d) ①or③ Shipment or storage (1d) ② 频率/漏率检查 ④ (HPR+洁净组装) ⑤ 上吊架 ⑥ 吊入竖井垂测 ⑤ 出杜瓦 ④ (HPR+)腔串组装 或⑧ 实验/存放

垂直测试动线 ② 频率/漏率检查 ④ (HPR+洁净组装) ⑤ 上吊架 ⑥ 吊入竖井垂测 ⑤ 出杜瓦 ④ (HPR+)腔串组装 CM workflow ①③ Storage (1d) ⑦ Cold mass assembly (15d) ④ CM assembly (9d) ⑤⑥ HT preparation, cool (10d) ⑥ HT, warm (10d) ①or③ Shipment or storage (1d) ② 频率/漏率检查 ④ (HPR+洁净组装) ⑤ 上吊架 ⑥ 吊入竖井垂测 ⑤ 出杜瓦 ④ (HPR+)腔串组装 或⑧ 实验/存放

Outline Background The SRF facility Brief introduction to the PAPS project Future project that may need PAPS The SRF facility Layout and workflow Labs for R&D purpose Cryogenic system Public service facilities

Labs for R&D purpose Inspection and measurement Optical inspection and grinding Pre-tuning machine New material and technology Oven for high baking and N-infusion Oven for Nb3Sn treatment Nb-Su sputtering High precision measurement T-mapping Second sound Vibration analysis ……

The cryogenic system Cryogenic system 2.5KW@4.5K and 300W@2K LHe system 210m3/h gas recycle and 100m3/h gas purify capability

Function of the cryogenic system VT dewars and HT CMs could be cooled, warmed, or tested separately. Cooling capacity is 100W for each. Every two of the three VT dewars could be cooled or warmed at the same time; single test at the same time. Each of the two HT CMs could be cooled or warmed at the same time; single test at the same time.

Compressed air and N2 gas 5 bar compressed air for valve, gauges, pneumatic tool, blow. 5 bar N2 from LN, 0.5um pp filter to remove particles, 0.1um fiberglass filter to remove moisture. 是 Compressed air supply Clean N2 supply Compressed air tank N2: 0.05um，H20 <0.1ppm

RF and vacuum equipment for general purpose RF equipments Quantity Note Signal generator 2 9K--3GHz Power meter Dual channels 1 Handheld Oscilloscope 1.5GHz 100M,4 channels Vector network analyzer 2Hz--20GHz Arbitrary wave generator 3 30MHz Frequency counter Spectrum analyzer 2Hz--6GHz N2: 0.05um，H20 <0.1ppm Vacuum equipments Quantity Note Molecular pump unit 1 Oil-free, with garge Leak detector 2 One for oil-free Scroll pump Oil-free SPSV unit MFC, 0.03um filter PID Baking Controller Up to 200C RGA set 1e-5 Pa to 1bar

Public service facilities (2) 30 tons cranes to cover the whole hall, including the passageway of the second floor. Gantry crane and manual folklift for light-weight pieces. Total electric power about 800kW, with plugs and power and distribution ready; separate gound for control and high power N2: 0.05um，H20 <0.1ppm

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