11/05/2000 Wire Chamber Working Group

Visit to Fermilab

Participants: – Giulio Auriemma, Thomas Schneider, Burkhard Schmidt

General Remarks:– Visit was organized by Guenakh Mitselmakher and Giorgio Appolinari

– We had extensive visits to chamber factory and useful discussions

->Project started many years ago and is ready for mass-production

Outline:– Project Description– Chamber Design– Manufacturing Tooling

11/05/2000 Wire Chamber Working Group

CMS EMU - Project Description

Title: (cms_side_view.eps)Creator: Adobe Illustrator(TM) 7.0CreationDate: (5/4/98) (3:40 PM)

Overview:

11/05/2000 Wire Chamber Working Group

Project Description

Task Sharing:

• Fermilab has the responsibility for the design and procurement of the components for all the CMS EMU chambers

• Chamber Production:– ME234/2 Assembled in MP9 (USA)

144+2 chambers– ME2/1, ME3/1 Assembled at PNPI (Russia) 72+2chambers– ME1/2, ME1/3 Assembled at IHEP (China) 144+2 chambers

• Fermilab has the responsibility for the shipment of kits and critical tooling to PNPI and China IHEP.

11/05/2000 Wire Chamber Working Group

Mechanical Design:

Anode Panels

Cathode Panels

CMS EMU - Chamber Design

11/05/2000 Wire Chamber Working Group

Chamber Design

Chambers consist of six major parts:– Panels - Made by Plascore from skins procured from GE and

machined at Lab 8 (PPD) and supplied to MP 9 as finished panels ready for cleaning and assembly

– Frames - Designed and Supplied by University of Wisconsin, Madison

– Wires - Supplied by Luma Metals to FNAL Specifications

– FR 4 Insulators and Separators - Manufactured by Eptam for FNAL under contract with the University of Florida

– Wire Fixation Bars - Supplied by Capital Electronics or PNPI

– Electrical components

11/05/2000 Wire Chamber Working Group

Chamber Design

Status:

• The chamber design is complete and all component and assembly drawings are released: http://tdpc01.fnal.gov/uscmsemu/Released Drawings/

• After completing several R&D prototypes, one production prototype has been built according to final released drawings

• Frame design and drawings may change as integration issues are resolved; additional components may be added to the outside of the chamber. None should affect basic chamber design

11/05/2000 Wire Chamber Working Group

Tooling Summary:

- Panel Preparation Tooling: Axxiom MachineGerber Machine

- Major Assembly Tooling: Gap bar gluing and clamping Station

Epoxy Curing StationAnode Wire Winding MachineAnode Wire Gluing MachineAnode Wire Soldering Station Ionized Air Cleaner

- Carts, Racks, and Assembly Tables:Anode Panel Cart Panel Table Cart Assembly TableSealing (RTV) & Transport

- Quality Assurance Tooling:Panel Vendor Inspection ToolingWire Tension and Spacing

TesterHV Test and Train

InstrumentationCosmic Ray Test Station

CMS EMU - Manufacturing Tooling

11/05/2000 Wire Chamber Working Group

• All Manufacturing Tooling Designs are Complete

• Drawings for All FNAL Designed Tooling are Engineering Released

• At Least One Each of All Production Tools have been Built to Final Released Drawings and are Ready for Use

Manufactoring Tooling

11/05/2000 Wire Chamber Working Group

CMS EMU - Manufacturing ToolingAnode Panel Gluing & Clamping:

These machines place

precise amounts of epoxy

glue on panels to bond

wire fixation boards and

guard strips; boards are

clamped in place to maintain

uniform solder pad to panel

surface height.

11/05/2000 Wire Chamber Working Group

Anode Panel Winding Machine:• Winding Machine in operation• For largest panel winds 1000 turns of wire in about 4 hrs.

CMS EMU - Manufacturing Tooling

11/05/2000 Wire Chamber Working Group

CMS EMU - Manufacturing Tooling

Anode Wire Soldering Machine:This machine uses a concentrated beam of intense light to melt precise amount of solder to bond anode wire to circuit pad of anode wire fixation board.

It is capable of soldering 1000 wires in a little more than 1 hr., taking about 5 hrs to complete one large panel.

11/05/2000 Wire Chamber Working Group

Ionizing Air Cleaner:

Cleans finished Anode Panel just prior to assembly into Chamber

CMS EMU - Manufacturing Tooling

11/05/2000 Wire Chamber Working Group

CMS EMU - Manufacturing ToolingWire Tension Machine:

Electronically excites wires, measures and converts natural frequencyinto tension.

11/05/2000 Wire Chamber Working Group

CMS EMU - Manufacturing Tooling

Cathode Panel Gluing Station:

A computer controlled mixingand dispensing system placesprecise amounts of epoxy onto each panel in preciselocations as required.

11/05/2000 Wire Chamber Working Group

Frame Assembly:

Chamber P2’ (ME 2/2) is shown assembled with frame attached. Note the main alignment pin and critical mounting plate assembly.

CMS EMU - Manufacturing Tooling

11/05/2000 Wire Chamber Working Group

Chamber Design: – The conceptual design of the CSC Chambers is solid

Tooling and Production:– The manufacturing process of the CSC chambers is

optimized for mass production – The experience and knowledge gained from completed full

size CSC Prototype chambers is of tremendous value for us

-> Given the time available for us to finalize the chamber design and prepare for mass production, we should follow the CMS EMU chamber and tooling design as closely as possible.

Summary and Conclusions