Vacuum pumps for the ESRF EBS project Michael Hahn

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3 rd Rencontres Nationales DU RESEAU TECHNOLOGIES DU VIDE SEVRIER, 10 13 October 2016

1 3 rd Rencontres Nationales DU RESEAU TECHNOLOGIES DU VIDE SEVRIER, October 2016 Vacuum pumps for the ESRF EBS project Michael Hahn On behalf of the EBS Accelerator Project Team

2 OUTLINE Project definition - Machine issues and parameters - Time schedule - Logistics Vacuum pumping - UHV pump selection and constraints - Vacuum assembly, chamber issues - Installation and vacuum preparation (pre-pumping) - Vacuum pump interface and control - Bake out Conclusion Page 2

3 SCOPE OF THE PROJECT ESRF TODAY Energy 6.04 GeV Storage ring circumference 844 m 200 MeV Electron Linac 10 Hz Booster Synchrotron Multibunch current 200 ma Horizontal emittance 4000 pm.rad Vertical emittance 4 pm.rad 42 Beamlines (including 14 Bending Magnet BL) Page 3 3 rd rencontres vide cnrs October 2016

4 SCOPE OF THE PROJECT EBS.. Now EBS Energy (GeV) Multibunch current (ma) Circumference (m) Horizontal emittance (pm.rad) Vertical emittance (pm.rad) Is going to be the new photon source (6 GeV electron storage ring) of the ESRF. The brilliance of the generated X-Rays will improve by factors due to the reduced horizontal e-beam emittance. - Will contain 7 dipoles per cell (today 2), 7 x 32 = 224 dipole magnets - Will replace the existing machine in the same tunnel - Will be pre-assembled prior to installation which starts in Jan Will contain girders for magnets, vacuum chambers, etc. - Will be an in-situ bakeable machine - Will mainly use lumped (discrete) UHV pumping rather than functional coatings - Will consist of stainless steel and aluminum vacuum chambers and use conventional flanges Page 4 3 rd rencontres vide cnrs October 2016

5 SCOPE OF THE PROJECT Now EBS Energy (GeV) Multibunch current (ma) Circumference (m) Horizontal emittance (pm.rad) Vertical emittance (pm.rad) 4 5 present EBS Dipoles-quadrupoles Page 5 3 rd rencontres vide cnrs October 2016

6 MASTER PLAN Courtesy of Pantaleo Raimondi Page 6 3 rd rencontres vide cnrs October 2016

7 VACUUM PUMPS SELECTION CRITERIA Compactness Good pumping speed for H2, N2, CO, CO2 Sufficient pumping speed for CH4, noble gases Compatibility with existing installation Reliability Failure tolerance (power cuts) Page 7 3 rd rencontres vide cnrs October 2016

Al2219/SS316LN has been selected for flanges -

Germany - 316LN material flow from steel suppliers to

internal height - Production of 33 HP absorber chambers

CH5 Production of Al dipole chamber at CECOM (Photo D.

8 20 VACUUM CHAMBERS (HIGH PROFILE) - Production of 139 aluminum chambers started at CECOM, Italy - Bi-metal Al2219/SS316LN has been selected for flanges - Production of 159 HP Stainless steel chambers at FMB, Germany - 316LN material flow from steel suppliers to producer started 20mm vert. internal height - Production of 33 HP absorber chambers at Pink, Germany - 316LN material flow from steel suppliers to producer started CH3 CH14 ( absorber chamber ) CH5 Production of Al dipole chamber at CECOM (Photo D. Gibson) Page 8 3 rd rencontres vide cnrs October 2016

sheet sections to be produced by deep drawing CH7 - Optimization of aspects like required thickness of

9 13 PROCUREMENT VACUUM CHAMBERS (LOW PROFILE) - Production of 102 low profile stainless steel vacuum chambers at FMB, Germany - 316LN material flow from steel suppliers to producer started - Central curved sheet sections to be produced by deep drawing CH7 - Optimization of aspects like required thickness of some of the sheets in collaboration with supplier CH6 CH8 Page 9 3 rd rencontres vide cnrs October 2016

PROCUREMENT - INSTRUMENTATION AND CONTROL 322 NEG cartridge pumps and 21 activation controllers, contract

sputtering ion pumps and 50 IPPS 4 channel NEG activation controller - Contract placed with AGILENT -

technical and contractual issues - AFC approval received 100 l/s NEG pump 294 inverted magnetron (Penning)

10 PROCUREMENT - INSTRUMENTATION AND CONTROL 322 NEG cartridge pumps and 21 activation controllers, contract placed with SAES, Italy - Lab test of pre-series completed - Series production to be delivered end sputtering ion pumps and 50 IPPS 4 channel NEG activation controller - Contract placed with AGILENT - Pre-Series delivery received 76 RGA assemblies Company proposed by tender board, sorting remaining minor technical and contractual issues - AFC approval received 100 l/s NEG pump 294 inverted magnetron (Penning) gauges and 160 Pirani gauges - Contract under preparation 200 l/s NEG pump Page 10 3 rd rencontres vide cnrs October 2016

11 VACUUM ASSEMBLY 200 l/s NEG pump Page 11 3 rd rencontres vide cnrs October 2016

12 LOGISTICS (STORAGE AND ASSEMBLY BUILDINGS) B1 - Architect view Preliminary design in progress B2 Temporary storage building Page 12 3 rd rencontres vide cnrs October 2016

INSTRUMENTATION AND CONTROL Baking controllers

control loops per unit Prototype tested Mechanics

Series production of 20 more to cope with

13 INSTRUMENTATION AND CONTROL Baking controllers compatible with fixing them on cable trays 16 control loops per unit Prototype tested Mechanics for 4 additional devices (preseries) arrived Series production of 20 more to cope with installation schedule Page 13 3 rd rencontres vide cnrs October 2016

GATE VALVES Dimensional and vacuum test for RF sector valves prototype OK RF

sector separation (pneumatic actuation) 69 units RFQ Modified catalogue all

units DN100CF Proposal of tender commission approved by DM, contract with

14 GATE VALVES Dimensional and vacuum test for RF sector valves prototype OK RF test with beam postponed RFQ Custom shaped RF All Metal gate valves for SR sector separation (pneumatic actuation) 69 units RFQ Modified catalogue all metal valves for FE separation (pneumatic actuation) 31 units DN63CF and 34 units DN100CF Proposal of tender commission approved by DM, contract with valve supplier pending AFC approval Page 14 3 rd rencontres vide cnrs October 2016

BAKING SYSTEM Sheathed heaters selected as primary source Tests of shaping

mockups CFT Thermocouples under preparation Purchase of heating collars being

sheathed heater in dedicated groove of aluminum chamber prototype Foam vacuum

15 BAKING SYSTEM Sheathed heaters selected as primary source Tests of shaping insulation coats (aluminum coated PI) ongoing by means of foam chamber and magnet mockups CFT Thermocouples under preparation Purchase of heating collars being prepared Foam vacuum chamber in foam magnet with thermal insulation (1) 316L sheathed heater in dedicated groove of aluminum chamber prototype Foam vacuum chamber in foam magnet with thermal insulation (2) Page 15 3 rd rencontres vide cnrs October 2016

too space demanding for EBS machine because of space constraints.

16 PREPUMPING FOR ASSEMBLY AND INSTALLATION Traditional pumping groups with Hybrid turbomolecular pump, membrane pump, gauge controller, PLC, etc. too space demanding for EBS machine because of space constraints. This is also to comply with safety standards and European legislation (CE conformity). A more compact pumping concept had to be found.. Page 16 3 rd rencontres vide cnrs October 2016

PREPUMPING FOR ASSEMBLY AND INSTALLATION 6 turbomolecular pumps

turbo gets low, operated by Turbo controller.

17 PREPUMPING FOR ASSEMBLY AND INSTALLATION 6 turbomolecular pumps attached to pre-pumping valves of each vacuum sector. Backed by a dry pump. Isolation valve in the exhaust which closes when rotation speed of turbo gets low, operated by Turbo controller. A trolley will transport controllers, turbos, ACP etc., materials to be installed on cable trays to keep the walkway free. Page 17 3 rd rencontres vide cnrs October 2016

18 PRESSURE PROFILE Expected conditioning after 1, 10, 100, 1000, 3000 Ah of beam 200 l/s NEG pump Page 18 3 rd rencontres vide cnrs October 2016

19 ID14 TEST OF KEY COMPONENTS EBS Prototypes installed in a 6m ID straight section of ESRF: - Straight aluminum chamber following EBS dipole chamber production principle(1) - Bellow chamber containing two low profile RF liner assemblies(2) - All metal pneumatic RF gate valve prototype(3) mm NEG coated ESRF extruded Al ID chamber to fill up full length of SS (4) Page 19 3 rd rencontres vide cnrs October 2016

PROBLEMS AND LESSONS LEARNED FROM ID14 TEST IN AUGUST 2016 - Full aluminum flanges can create problems outside

on this small test assembly, it becomes obvious that the mockup construction is very important Aluminum prototype

20 PROBLEMS AND LESSONS LEARNED FROM ID14 TEST IN AUGUST Full aluminum flanges can create problems outside lab environment - Co-incidence of vacuum and RF gaskets on the flanges complicates flange assembly - With the same fixation hole pattern, RF gaskets for low and high profile chambers could be confused - Crossing welding seams on aluminum chambers produced from two plates can create problems - Given the amount of issues identified on this small test assembly, it becomes obvious that the mockup construction is very important Aluminum prototype chamber on ID14 View from below, with leaking CF100 aluminum flange (IP) Page 20 3 rd rencontres vide cnrs October 2016

21 CONCLUSION Contracts for the custom-shaped series production items (standard cell chambers, valves,.. ) have been placed; Design and procurement for one-of-a-kind items (injection and diagnostic chambers, straight section adaptation,..) is ongoing; Procurement of vacuum instrumentation (UHV pumps, gauges, controllers,..) close to completion; Still a lot of work for consumables ( screws, gaskets, heating collars and connectors, thermal insulation,..) ahead; Page 21 3 rd rencontres vide cnrs October 2016

22 MANY THANKS FOR YOUR ATTENTION Page 22 3 rd rencontres vide cnrs October 2016

INDIAN INSTITUTE OF TECHNOLOGY KANPUR Kanpur , Uttar Pradesh, India Centre for Lasers and Photonics

INDIAN INSTITUTE OF TECHNOLOGY KANPUR Kanpur 208016, Uttar Pradesh, India Centre for Lasers and Photonics Enquiry no.: CELP/RV/EQP/MHR/2017/1 Enquiry date: 23/04/2018 Closing date: 17/05/2018 Sealed quotations