WOWCC development meeting

Friday 20 Aug 2021, 14:00 → 16:00 Europe/Zurich

zoom

14:00 → 14:15 Update on fabrication

Speaker: Pierre Naisson (CERN)

14:15 → 14:30 update on coating

Speakers: Alban Sublet (CERN), Fabian Manke (CERN)

20210520_WOWCC_workflow.pdf

20210520_WOWCC_workflow.pptx

14:30 → 14:45 update on design

Speaker: Gilles Villiger (CERN)

Bonjour Alexej,

 

Je te recontacte afin de clarifier les jobs à ouvrir. Pour rappel, cela concerne :

- l’optimisation du chariot pour Alick et Jeremy que j’ai rencontré il y a trois semaines en arrière (80 h maxi en estimation)

- les heures de participation au réunion WOWCC ( a convenir)

 

Pour informations, nous ouvrons les jobs avec un minimum de 160h.

Néanmoins, seules les heures réalisées sont facturées.

 

 

Cdt,

 

Gilles

 

 

From: Alick Macpherson <Alick.Macpherson@cern.ch>
Sent: Tuesday, July 27, 2021 9:22 AM
To: Alexej Grudiev <Alexej.Grudiev@cern.ch>; Proj-HighGradientRF-CopperCrabCavity (Copper Crab Cavity project members) <Proj-HighGradientRF-CopperCrabCavity@cern.ch>
Cc: Jeremy Bastard <jeremy.bastard@cern.ch>
Subject: Followup: WOW cavity unit assembly frame

 

 

Hi All,

 

Following a discussion about the trolley for the WOW cavity (on Thursday 8th), this mail is the follow up on what  points were noted.  Specifically, the following were flagged, and could trigger  minor updates of drawings . The proposal is that Gilles make these (minor) changes.

 

                1. FCCACSGA__T0026: the height of this piece is too small and needs to be increased so that the cavity sits a bit higher on the trolley

                               - the overall height needs to be increased by 100mm. Gilles, if you need clarification of what is requested, please contact Jeremy Bastard.

                               - once he drawing has been updated, two pieces are to be produced. This will be done by SY-RF-SRF

 

                2.  FCCACSGA__T0025: the screws M6x22 in POS 8 are not the correct length

                               - please update the drawing with M6x35 instead of M6x22

 

                3. FCCACSGA__T0027: The wheels in POS 3 are not appropriate and have been changed, and FCCACSGA__T0027 should be updated 

                               - these wheels suffered a visible deformation once the cavity was installed on the trolley

                               - they have been replaced with stronger wheels. The details for the replacement wheels are:

                                               - wheels as per DAI 8604293, Ref: PEL3 / 180 / 50K from supplier Mino & Lorenzini.

                                                               -“Swivel casters ø180: Wheel with polyurethane tires and light metal rim -Swing on sealed double ball bearings -Load capacity 350 kg “

                                                               - 2 casters with brakes and 2 without. 

 

 

All other concerns related to the WOW cavity framed trolley the were raised at the 25th of June were dealt with, and once the replacement pieces of item 1 above have been fabricated, the WOW cavity trolly and cavity unit is accepted. 

 

In addition, the following points have been identified:

                - It was agreed that the threaded holes on the three segments of the cavity (that were used for lifting during the fabrication) are not to be used to lift the assembled cavity

                - Some tooling has to be designed for when the cavity has to be installed in a clean room. What is required is to be assessed/specified by SY-RF-SRF

                - Some tooling has to be designed for manipulation a fully assembled cavity in the RF testing phase. What is required is to be assessed/specified by SY-RF-SRF

 

We trust that this is clear, and please let us know if there are  questions or comments

Many thanks

Jeremy and Alick

 

__________________________________
Alick Macpherson,  Senior Physicist
SY-RF-SRF: Superconducting RF Section
Bat 252 1-026, CERN
1211 Geneva 23, Switzerland

Phone:   +41 22 767 0172    
Mobile:  +41 75 411 5131
__________________________________

14:45 → 15:00 update on assembly

Speaker: Alick Macpherson (CERN)