3rd Harmonic Cryomodule for DESY

ORC Review Documents and Commentary

This folder contains presentations and notes from the Operational Readiness Clearance (ORC) review for the 3.9 GHz Cryomodule.

ACC39 Introduction, Parameters, and Specifications

This is a combined introductory document containing a summary of Fermilab and DESY responsibilities for ACC39, a top level parameter list for the cryomodule, pressure specifications, and other requirements.

3.9 GHz cryomodule hazard/risk analysis

As part of the Fermilab Technical Division Operational Readiness Clearance (TD-ORC) documentation requirements, a hazards/risk analysis has been prepared for the 3.9GHz Cryomodule, ACC39. This analysis identifies the hazards associated with ACC39 installation and operation at DESY and presents appropriate mitigating actions which, when implemented, either eliminate or reduce risks to acceptable levels.

3.9 GHz Cryostat Pressure Specification

The document includes the specification from DESY for the 3rd harmonic cryostat with some commentary and Fermilab-DESY conclusions.

Vacuum Vessel Engineering Note and Documents

This folder contains the signed engineering note and associated documents for the 3.9-GHz cryomodule vacuum vessel.

Helium Vessel Engineering Note for 3.9-GHz Dressed Cavity, #5

This folder contains the engineering note and all associated electronic files for the 3.9-GHz dressed SCRF cavity, #5. For all these engineering notes, relief valve details and venting analysis refer to Fermilab's horizontal test cryostat. Old versions of documents have been moved to the folder "Old versions of documents".

Helium Vessel Engineering Note for Cavity #3

This folder contains the helium vessel engineering note for Cavity #3. Associated documents (material certifications, welder certifications, weld procedure) are also in this folder.

Helium Vessel Engineering Note for Cavity #8

This folder contains the helium vessel engineering note for Cavity #8. Associated documents (material certifications, welder certifications, weld procedure) are also in this folder.

Helium Vessel Engineering Note for Cavity #7

This folder contains the helium vessel engineering note for Cavity #7. Associated documents (material certifications, welder certifications, weld procedure) are also in this folder.

Dressed Cavity Drawings

 

ACC39 Interface Specification

This document specifies the interfaces between ACC39 and the installation at DESY at the Cryomodule Test Bench (CMTB) and then in TTF/FLASH.

Cryomodule Piping Engineering Note

Piping engineering note and associated documentation

3.9 GHz cryomodule piping mechanical loads

This document contains an analysis of mechanical loads on the piping in ACC39 as installed in FLASH at DESY. Lateral loads, axial loads, and lateral elastic pipe instability are all analyzed. (updated 7 May 2009.)

Low temperature stresses

This document summarizes the calculated cold stresses and allowable cold stresses in the helium vessels and cavities to demonstrate the 4.0 bar cold Maximum Allowable Working Pressure (MAWP). This supplements the helium vessel engineering notes since those documented a 2.0 bar warm or cold MAWP.

Cavity Production Flow Chart for the 3.9 GHz Cavities

Flow chart of the cavity production process for all the 3.9 GHz cavities, including branch points for their differences.

Niobium mechanical properties

This document surveys published niobium mechanical property data. Included are the rationale and conclusions for high RRR, heat treated, niobium allowable stresses.

Cryomodule shipping specification

Shipping specification, detailing packaging and shipping responsibilities for the 3rd harmonic cryomodule transportation to DESY.

Helium Vessel Engineering Note for Cavity #4 (spare cavity)

This folder contains the engineering note and associated documents for Cavity #4. (Log in to view and download documents in this folder.)

Old versions of documents

Old versions of 3.9 GHz cryomodule documents are stored here for reference. (Log in to view and download documents in this folder.)