# Presentation: 724358

## Endcap Muon  System 

**Giorgio Apollinari**
**CMS Week  - CERN**
**Jun 14-18, 1999**

## Outline

**Chambers Factory **
**Organization**
**R&D Status and Plans**
- Prototypes
- Aging Test Chamber Results
- Summer ‘ 99 CERN Test Beam
**Procurement (Tooling/Production)**
- Chambers Panels
- ME234/2 Parts
- Panel Cleaning Machine
**Chamber Production**
- ME234/2 Production Status
**Integration & Alignment**
**International Collaboration**

## Outline

**Chambers Factory **
**Organization **
**R&D Status and Plans**
- Prototypes
- Aging Test Chamber Results
- Summer ‘ 99 CERN Test Beam
**Procurement (Tooling/Production)**
- Chambers Panels
- ME234/2 Parts for Production
- Tooling & Panel Cleaning Machine
**Chamber Production**
- ME234/2 Production Status
**Integration & Alignment**
**International Collaboration**
**June CMS Week Issues**

## EMU Chambers

**                       ****C**
**     ****	****   ****H**
**  ****F E R M I**
**          ****N**
**R U S S I A**

**EMU Chambers**

## Production Tooling

**Production tooling:**
**Operational**
**Consistently used on**
**	****prototype production**

**Wire Tension and Position**
**Measurement**

**Ionized Air **
**Cleaner**

## Panel Cleaning Machine

## Panel Cleaning Machine

**Plans for Panel Cleaning Machine**
**Sample Panels Cleaned **
- 3M R&D Machine
- Wood-working Sander
**Electrical Properties Measurements**
- Interstrip Resistance	OK
**Systematic Visual Inspection****	****	**
- Number of Loose Fibers/Unit Length		Inconcl.
- Copper Burs Presence			Both OK
- Surface Finish				3M Better
- Dust/Chip Removal				Both OK
**Test Chamber Assembly**
**Decision on Procurement****	****	****Done**

## Organization

** ****Fermilab Site:**
**- panel production**
**- large CSC assembly**

**Procurement**

**wire fix bars**

**gap bars**

**guard strips**

**etc.**

**PNPI Site**

**UC Site**

**UF Site**

**IHEP Site**

**frames**

**parts and critical tooling**
**(smaller chambers)**

**parts and critical tooling**
**(smaller chambers)**

**large CSCs**

**large CSCs**

**CERN**

**large CSCs+Electronics, tested**
**installation/commissioning**

**large CSCs+Electronics, tested**
**installation/commissioning**

**smaller CSCs+Electronics, tested**
**installation/commissioning**

**smaller CSCs+Electronics, tested**
**installation/commissioning**

** ****Fermilab Site:**
**- panel production**
**- large CSC assembly**

** ****Electronics Site (OSU,**
**UCLA,CM):**
**- FE & Trigger**

## Organization

**What’s in the project ?**
**Design**
- CSC ME1/2,ME1/3,ME2/1,ME3/1,ME23/2
- Tooling,Procedures and Testing equipment
**Materials**
- 144 chambers to be assembled at FNAL, 144 at IHEP-Bejing and 72 at PNPI-Russia
- Procure materials and critical tooling for all the sites
**Assemble ME234/2 at FNAL**** **
**What are the goals for Y99 ?**
**Y99 is still an “R&D” year:**
- Assemble P3 (ME2/1 russian prototype)
- Assemble Aging Test Chamber (CERN GIF Test)
- Assemble P2’’ (Summer CERN Test Beam)
- Design and Assemble P4 (ME1/2 chinese prototype)
- Procure and commission critical tooling for PNPI
**Setup Chamber Assembly factory**
**Start ME234/2 Panel production (April 1****st****)**

## R&D Status and Plans 

**Pre-Production Prototypes **
**Goals**
- Learning devices
**design changes**
**assembly specifications**
- Debug tooling
- Refine procedures &QC
**travelers**
**QC test**

**Aging Test Chamber**
**Anode Panel**

## Prototypes 
P2’	Completed 10-98
P3	Completed 1-99
Aging Test Chamber 01-02
			Completed 2-99
Aging Test Chamber 03-04
			Completed 4-99
P2’’	Being Assembled
P4	Scheduled  7-99

**P2’**

**P3**

**Aging Test Chamber**

**Prototypes **
**P2’****	****Completed 10-98**
**P3****	****Completed 1-99**
**Aging Test Chamber 01-02**
**	****	****	****Completed 2-99**
**Aging Test Chamber 03-04**
**	****	****	****Completed 4-99**
**P2’’****	****Being Assembled**
**P4****	****Scheduled  7-99**

**R&D Status and Plans **

## Prototypes 
P2’	Completed 10-98
P3	Completed 1-99
Aging Test Chamber 01-02
			Completed 2-99
Aging Test Chamber 03-04
			Completed 4-99
P2’’	Being Assembled
P4	Scheduled  7-99

_**P2’**__**	**__**Completed 10-98**_
**P3****	****Completed 1-99**
**Aging Test Chamber 01-02**
**	****	****	****Completed 2-99**
**Aging Test Chamber 03-04**
**	****	****	****Completed 4-99**
**P2’’****	****Being Assembled**
**P4****	****Scheduled  7-99**

**R&D Status and Plans **

_**Misplaced Wires**_

## Prototypes 
P2’	Completed 10-98
P3	Completed 1-99
Aging Test Chamber 01-02
			Completed 2-99
Aging Test Chamber 03-04
			Completed 4-99
P2’’	Being Assembled
P4	Scheduled  7-99

**Prototypes **
**P2’****	****Completed 10-98**
**P3****	****Completed 1-99**
**Aging Test Chamber 01-02**
**	****	****	****Completed 2-99**
_**Aging Test Chamber 03-04**_
**	****	****	****Completed 4-99**
**P2’’****	****Being Assembled**
**P4****	****Scheduled  7-99**

**R&D Status and Plans **

_**Gas Leaks**_

** **
**Glue Bead for sealing**
**“****Assumption” on capillarity**

## Prototypes 
P2’	Completed 10-98
P3	Completed 1-99
Aging Test Chamber 01-02
			Completed 2-99
Aging Test Chamber 03-04
			Completed 4-99
P2’’	Being Assembled
P4	Scheduled  7-99

**P2’****	****Completed 10-98**
**P3****	****Completed 1-99**
_**Aging Test Chamber 01-02**_
**	****	****	****Completed 2-99**
**Aging Test Chamber 03-04**
**	****	****	****Completed 4-99**
**P2’’****	****Being Assembled**
**P4****	****Scheduled  7-99**

**R&D Status and Plans **

** ****Guard Strip Region**
- After irradiation corresponding to 6-8 LHC years at GIF, we observed a rather substantial increase in the counting rate (i.e. spikes) from wire located close to the guard strips ( ~ 1 KHz vs. 50 Hz for all the other wires). The current was also substantially increased.
- The FR4 guard strip (used to decrease the field on the last wires of an HV sector) is not a good insulator after irradiation.