6) AL-1745-9711_ES.pdf

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Advanced Light Source Upgrade Project Lawrence Berkeley National Laboratory

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Printed hard copies of this document are for reference only.

SR Welded and Dual BPM Button Engineering

Specification

Release Date: Aug 2 2024 8:44:45 AM PDT

Document Number: AL-1745-9711 Revision: B

Document Status: Released

Document Type: SPECIFICATION

Category Code: AL7530

ALS-U - STORAGE RING

VACUUM - GENERAL

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TABLE OF CONTENTS

1 Revision History

2 Approvals

3 Abbreviations and Acronyms

4 Introduction

4.1 Introduction to ALS-U

4.2 Subject of this Engineering Specification

5 DOCUMENT Definition

5.1 Specification Definition

5.2 Identification Number

5.3 Traceability

6 Description

7 Environment Requirements

7.1 Codes and Standards

7.2 Cleaning Environment

7.3 Cleaning Fluids

7.4 Cutting Fluids

8 Technical requirements

8.1 General Mechanical Dimensions

8.2 BPM connector type

8.3 Electromagnetic properties

8.4 Vacuum properties

8.5 Manufacturing process

8.5.1 Material

8.5.2 Fabrication

8.5.2.1 Part fabrication

8.5.2.2 Part joining

8.5.2.3 Cleaning after manufacturing

8.6 Final test

8.6.1 Inspection verification

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8.6.2 Functional dimension verification

8.6.3 He Leak Test

8.7 Packing and shipping

9 Applicable Documents ci al ly R el ea se d to th e

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1 REVISION HISTORY

Rev. CM Number Description of Change A Baseline B Changing SOW version

2 APPROVALS

The following individual(s) must approve this document:

Approver Project Role Ken Chow Chief Engineer/ Accelerator Mechanical Systems lead

/ Interim QA Manager Olusola Omolayo Vacuum CAM Changchun Sun Diagnostics CAM Windchill Approved / Concurred By

3 ABBREVIATIONS AND ACRONYMS

ALS Advanced Light Source ACL Acceptance Criteria List ALS-U Advanced Light Source Upgrade AR Accumulator Ring ARO After Receipt of Order BPM Beam Position Monitor CAD Computer Aid Design CMM Coordinate Measuring Machine CP Control Plan FAT Factory Acceptance Test

FDR

FE

Final Design Review Beamline Front End

HHL High Heat Load HP Hold Point

IR

KOM

InfraRed Kick Off Meeting

LBNL Lawrence Berkeley National Laboratory LCW Liquid Cooled Water NCR Nonconformance Report NP Notification Point NTP Notification To Proceed SR Storage Ring UHV Ultra High Vacuum VC Vacuum Chamber W Witness ci al ly R el ea se d to th e

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4 INTRODUCTION

4.1 Introduction to ALS-U

ALS-U is an upgrade project to the LBNL Advanced Light Source (ALS). The ALS is a 1.9

GeV storage ring operating at 500 mA of beam current. It is optimized to produce intense beams of soft x-rays, which offer spectroscopic contrast, nanometer-scale resolution, and broad temporal sensitivity. The ALS facility includes an accelerator complex and photon delivery system that is capable of providing the foundations for an upgrade that will achieve world-leading soft x-ray coherent flux. The existing ALS provides a ready-made foundation, including conventional facilities and includes extensive beamlines (up to 40 simultaneously operating beamlines) and instrumentation, an experimental hall, computing resources, ancillary laboratories, offices, and related infrastructure that will be heavily utilized in an upgrade scenario.

The ALS will be upgraded with a multibend achromat (MBA) lattice design that will provide a soft x-ray source that is orders of magnitudes brighter — an up to 100-1000 times increase in brightness and will provide a significantly higher fraction of coherent light in the soft x-ray region than is currently available at ALS.

4.2 Subject of this Engineering Specification

The welded and dual BPM buttons for the ALS-U storage ring (SR) features BPM feedthrough assembly welded to a stainless-steel vacuum flange as shown in Figure 4-1, as well as standalone BPM with no flanges shown in Figure 4-2. This document outlines the technical specifications for the final design and manufacturing for both welded and dual BPM buttons.

Figure 4-1: SR Dual BPM button variants ci al ly R el ea se d to th e

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Figure 4-2: SR Welded BPM button variants ci al ly R el ea se d to th e

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5 DOCUMENT DEFINITION

5.1 Specification Definition

Must, will, may, and should are used to define every specification listed in this document.

The definitions of these terms are as follows

May – is used to indicate a desire or goal of a specification. This can also be interpreted

‘as nice to have’ and are not contractually binding.

Must –is a specification that is contractually binding and must be implemented.

Should – is used to indicate a desire or goal of a specification. This can also be interpreted ‘as nice to have’ and are not contractually binding.

Will – is used to inform intent or declaration of purpose. This is not a specification.

Example, the author will use the word ‘must’ to indicate that a specification is contractually binding and must be implemented.

5.2 Identification Number

Each specification stated in this document must have a unique identification (ID) number

(NUM). Once an ID NUM has been assigned to a specific specification, the ID

NUM cannot be changed or reassigned.

The ID NUM formant is as follows SYY-XX-QQQQQQ, where S indicates that this is a specification, YY identifies the Major Systems Level within the ALS-U project, XX is a unique identifier within the Major Systems Level, and QQQQQQ is a unique six digit number.

The ALS-U Lead System Engineer assigns the unique ID numbers.

5.3 Traceability

Each specification stated in this document must have a traceability to determine the relationship between different requirements and specifications not only within this document, but also for the entire project.

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6 DESCRIPTION

The SR dual BPM buttons are mounted to the BPM blocks which are in turn integrated to the storage ring vacuum chambers. Figure 6-1 shows the dual BPM buttons mounted to the BPM block. There are 3 designs of the BPM buttons covered by this technical specification. All 3 BPM variants share the following features: SMA female connector, Stainless steel flanges with helicoflex sealing grooves, and two vendor selected brazed feedthrough interface between button and SMA connector.

Differences between the 3 design variants are button diameter, flange geometry, overall length of button stem and geometry of the BPM stem.

Figure 6-1: Dual BPM button mounted to vacuum chamber BPM block ci al ly R el ea se d to th e

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The SR welded BPM buttons are mounted to the vacuum chambers or vacuum bellows.

Figure 6-2 shows the welded BPM buttons mounted to an RF bellow. There are 2 designs of the BPM buttons covered by this technical specification. All variants share the following features: SMA female connector and a vendor determine brazed feedthrough interface between button and SMA connector.

Differences between the 2 design variants are button diameter and the overall length of button stem and geometry of the BPM stem.

Figure 6-2: Welded BPM button mounted to vacuum chamber BPM block ci al ly R el ea se d to th e

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Table 6-1 list the button types and the associated storage ring vacuum chambers

Sector RAFT Chamber Button Sector RAFT Chamber Button Sector RAFT Chamber Button

1 Bellow AL-1455-1567

Straight Transition AL-1455-1567

Straight Transition AL-1455-1567

Bellow AL-1455-1567 Straight Transition AL-1455-1567 Transition AL-1455-1567

Bellow AL-1455-1567

VC01 al-1460-3111

VC01 al-1460-3111

3 Bellow AL-1455-1567 BELLOW AL-1455-2849 Bellow AL-1455-2849

Bellow AL-1455-1567 VC02 al-1430-7412 VC02-2 AL -1430-7412

Bellow AL-1455-1567

Bellow al-1455-2849

Bellow AL -1455-2849

Straight Transition AL-1645-6489 Bellow al-1455-1567 Bellow AL -1455-1567

Straight Transition AL-1645-6489 3 Bellow al-1455-2849

Bellow AL -1455-2849

VC01 AL-1460-3111

Bellow al-1455-1567 Bellow AL-1455-1567

Bellow AL-1455-2849 Bellow al-1455-1567

Bellow AL-1455-1567

VC02-2 AL-1430-7412

Straight Transition AL-1455-1567 Bellow AL-1455-1567

Bellow AL-1455-2849 Straight Transition AL-1455-1567

Straight Transition AL-1455-2849

Bellow AL-1455-1567

VC01 al-1460-3111 Straight Transition AL-1455-2849

3 Bellow AL-1455-1567 Bellow AL-1455-2849

VC01 AL -1460-3111

Bellow AL-1455-1567 VC02-2 al-1430-7412 Bellow AL-1455-2849

Bellow AL-1455-1567

Bellow al-1455-2849 VC02-2 AL -1430-7412

1 Bellow AL-1455-1567 Bellow al-1455-1567

Bellow AL-1455-1567

Bellow AL-1455-2849

Bellow al-1455-2849 Bellow AL-1455-1567

Bellow AL-1455-1567 Bellow AL-1455-1567 3 Bellow AL -1455-2849

Bellow AL-1455-2849

Bellow AL-1455-1567

Bellow AL-1455-1567

Bellow AL-1455-1567 Bellow AL-1455-1567 Bellow AL-1455-1567

Bellow AL-1455-1567

Straight Transition AL -1645-6489

Straight Transition AL-1455-1567

Bellow AL-1455-1567 Straight Transition AL -1645-6489 Straight Transition AL-1455-1567

Straight Transition AL-1455-1567

VC01 AL-1460-3111

VC01 AL -1460-3111

Straight Transition AL-1455-1567 Bellow AL-1455-2849 Bellow AL-1455-2849

VC01 AL-1460-3111 VC02-2 AL -1430-7412 VC02-2 AL -1430-7412

Bellow AL-1455-2849

Bellow AL-1455-1567

Bellow AL -1455-2849

VC02 AL-1430-7412 Bellow AL-1455-1567 Bellow AL -1455-1567

Bellow AL-1455-1567 3 Bellow AL -1455-2849

Bellow AL -1455-2849

Bellow AL-1455-2849

Bellow AL-1455-1567 Bellow AL-1455-1567

Bellow AL-1455-2849 Bellow AL-1455-1567

Bellow AL-1455-1567

Bellow AL-1455-1567

Straight Transition AL-1455-1567 Bellow AL-1455-1567

Bellow AL-1455-1567 Straight Transition AL-1455-1567

Straight Transition AL-1455-1567

Bellow AL-1455-1567

VC01 AL -1460-3111 Straight Transition AL-1455-1567

Bellow AL-1455-2849

VC01 al-1460-3111

VC02-2 AL-1430-7412 Bellow AL-1455-2849

Bellow AL-1455-1567 VC02-2 AL -1430-7412

Bellow AL-1455-2849

Bellow AL-1455-1567

Bellow AL-1455-2849 Bellow AL-1455-2849

Bellow AL-1455-1567

Bellow AL-1455-2849

Bellow AL-1455-1567 Bellow AL-1455-1567

Bellow AL-1455-1567

Bellow AL-1455-1567

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7 ENVIRONMENT REQUIREMENTS

7.1 Codes and Standards

ID NUM

(SYY-XX-) Specification

S09-94-000151

The following standards must apply for the fabrication and test of the SR Welded and Dual BPM Buttons:

EN ISO 13919 or EN ISO 5817

EN ISO 17637

ASTM E498.

EN ISO 17640

ASTM E2734/E2734 M − 10.

7.2 Cleaning Environment

ID NUM

(SYY-XX-) Specification

S09-94-000152 The cleaning environment must comply with UHV Chamber and Component Production Requirements AL-1220-7841, §7.2

7.3 Cleaning Fluids

(SYY-XX-) Specification

S09-94-000153 The cleaning fluids must comply with UHV Chamber and Component Production Requirements AL-1220-7841, §7.3

7.4 Cutting Fluids

(SYY-XX-) Specification

S09-94-000154 The cutting fluids must comply with UHV Chamber and Component Production Requirements AL-1220-7841, §7.4 ci al ly R el ea se d to th e

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8 TECHNICAL REQUIREMENTS

8.1 General Mechanical Dimensions

ID NUM

(SYY-XX-)

Specification

S09-05-000357 The mechanical dimension of the BPM button must be in accordance with the approved vendor drawings

8.2 BPM connector type

ID NUM

(SYY-XX-)

Specification

S09-94-000286 The connector of the BPM button must be compatible with a standard SMA male connector

(SYY-XX-)

RQMT

DEF

Specification Value Unit

S09-94-000287 Must

SMA connector impedance

50 Ω

8.3 Electromagnetic properties

The electrical properties of the buttons must not deviate from the electrical properties of prototype SR Welded and Dual BPMs measured at LBNL. A summary of the measured properties is listed below. It is desirable that the vendor is able to check the following values for all button units, and LBNL will sampled the measurement as part of the acceptance criteria for each delivered batch.

ID NUM

(SYY-XX-)

RQMT

DEF

Specification Value Unit

S09-94-000291 Must Isolation to ground >5 MΩ

S09-05-000288 Must Capacitance

2< C <4.5 Variation under 0.4 pF pF

S09-94-000289 Must Spread in electrical length between buttons ≤30 ps

S09-94-000290 Must

Characteristic impedance along the structure, upstream of the button electrode

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8.4 Vacuum properties

(SYY-XX-)

RQMT DEF Specification Value Unit

S09-94-000277 Must

UHV

compatibility <5.00e-10 Torr

S09-94-000275 Must

Maximum Allowable

Temperature for bakeout

300 Degree Celsius

8.5 Manufacturing process

8.5.1 Material

The procurement of the raw material by the vendor must comply with the following requirements

ID NUM

(SYY-XX-)

Specification

S09-94-000279 The flanges of the BPM Button must be stainless steel 316L

S09-05-000356 The magnetic permeability must be < 1.04 μ/ μ0

ID NUM

(SYY-XX-)

RQMT DEF Specification Value Unit

S09-94-000169 Must

The material must be compatible with synchrotron radiation >1 x 105 Gray

8.5.2 Fabrication

8.5.2.1 PART FABRICATION

The fabrication of the BPM must comply with the following requirements

Cutting fluids

ID NUM

(SYY-XX-)

Specification

S09-94-000170 A water-soluble and non-halogenated cutting fluids must be used for fabrication ci al ly R el ea se d to th e

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8.5.2.2 PART JOINING

The joining process of the components must comply with the following requirements

General requirement

ID NUM

(SYY-XX-)

Specification

S09-94-000177 All parts must be cleaned prior to welding

S09-94-000178 A WPS is not required

S09-94-000182 All welds must be free from cracks and fissures or other defects that would make them incompatible with a high vacuum environment.

Inspection of welded joints

(SYY-XX-)

Specification

S09-94-000183 100% of the vacuum boundary welded joints must be visually inspected

Component leak check

ID NUM

(SYY-XX-) Specification

S09-94-000185 100% of the vacuum boundary welded joints must be leak tested.

S09-94-000186 The leak test of the welded joint must be performed.

8.5.2.3 CLEANING AFTER MANUFACTURING

An intermediate cleaning must be done after manufacturing and must comply with the following requirements

ID NUM

(SYY-XX-)

Specification

S09-94-000172 UHV surfaces must be protected as per best practices during handling operations.

S09-94-000173 Parts must be stored in a clean area from the workshop

S09-94-000174 Parts must be suspended in tanks by wire, hooks or in baskets S09-94-000280

Ultrasonic bath must be used to rinse part

S09-94-000281 Any spot cleaning must be done by using acetone followed by isopropyl alcohol.

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8.6 Final test

The final tests to ensure the performance of the SR Welded and Dual BPM Buttons must be performed in the sequence shown in Figure 8-1.

Figure 8-1: Final test sequence ci al ly R el ea se d to th e

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General requirement

(SYY-XX-)

Specification

S09-94- 000193 All tests must take place in a clean area

S09-94-000197 LBNL must have right to visit the contractor during these tests

8.6.1 Inspection verification

(SYY-XX-)

Specification

S09-94-000282 100 % of BPM buttons must be inspected

8.6.2 Functional dimension verification

ID NUM

(SYY-XX-)

Specification

S09-94-000283 A Functional dimension verification must be performed, on all BPM Buttons

8.6.3 He Leak Test

ID NUM

(SYY-XX-)

RQMT DEF Specification Value Unit

S09-94-000284 must Allowable leak rate <1x10-11 torr-liters/sec.

8.7 Packing and shipping

ID NUM

(SYY-XX-)

Specification

S09-94-000285 The BPM button must be properly bagged, secured, and packaged to maintain cleanliness and prevent damage and contamination during transit by commercial carriers.

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9 APPLICABLE DOCUMENTS

This section identifies applicable documents that are considered to be a part of this document. All information contained in an applicable document must be valid to the full extent unless specifically noted within this document. Applicable documents must be obtained from the LBNL Document Control Center (DCC).

Table 9-1: Applicable documents ID Document ID Title

1 AL-1745-9712B SR Welded and dual BPM Buttons Statement of Work 2 AL-1746-5339A SR Welded and dual BPM Buttons ACL 3 AL-1220-7841F UHV Chamber and Component Production Requirements 4 AL-1405-1295A Control plan template 5 AL-1265-6612B ALS-U Build to Specification CAD Model and Drawing Requirements

6 AL-1455-1567B WELDED, BPM, 6MM, 28.4 L

7 AL-1455-2849B WELDED, BPM, 4 MM, 35.5 L

8 AL-1645-6489B BUTTON, BPM, DUAL, 4 MM DIA, 35.5 LG

9 AL-1460-3111B BUTTON, BPM, DUAL, 6 MM, 28.4 L

10 AL-1430-7412B BUTTON, BPM, DUAL, 4 MM DIA, 35.47 LG

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