# Presentation: 650738

## A suggestion for the naming of parts in Silicon Run IIb

- L. Bagby, E. Chabalina, A. Nomerotski,   _E. von Toerne_ + others
- February 2003

## General Remarks

- Labeling of production parts and installed parts differs
**Worst case naming scenario:** Each subgroup uses different  names for the same installed object: HV naming different from DAQ naming different from reconstruction different from MC simulation ...
- It might be convenient to have a scheme similar to RunIIa
- Because it is convenient not to have to learn new names
- It might be better **NOT** to have a scheme similar to RunIIa
- Because the detector geometry is very different and the naming should reflect the geometry.
- The proposed scheme is a good compromise of these two principles

## Naming of Installed Parts

- A few technical terms
- Module: 	A sensor/hybrid combo in Layers L2-5 		Types: 1010A  2020A  1010S  2020S
- 		A= axial  S=stereo
- Stave:	1010A+2020A+1010S+2020S+support
- Ladder:	Sensors ganged together in readout
- 		(1 Module = 2 Ladders)

## D0 Coordinate System

- Right-Handed coordinate system,
- Positive z and positive eta point south
- Protons travel along positive z-axis (south)
- Documentation
- _[http://www-d0online.](http://www-d0online.fnal.gov/www/groups/cap/quick_guide/Coordinate_System.htm)__[fnal](http://www-d0online.fnal.gov/www/groups/cap/quick_guide/Coordinate_System.htm)__[.](http://www-d0online.fnal.gov/www/groups/cap/quick_guide/Coordinate_System.htm)__[gov](http://www-d0online.fnal.gov/www/groups/cap/quick_guide/Coordinate_System.htm)__[/www/groups/cap/quick_guide/Coordinate_System.](http://www-d0online.fnal.gov/www/groups/cap/quick_guide/Coordinate_System.htm)__[htm](http://www-d0online.fnal.gov/www/groups/cap/quick_guide/Coordinate_System.htm)_
- Positive y points upwards
- Positive x points East (x increases while going east)

- Protons

## Module Position on Stave

**2020**

- South End

- North End

**1010**

- Naming of ladders:
- Lisa will use “barrel” label

**Protons**
**Going along **
**positive Z axis**

**Z-Axis**

## Stave Location in R-phi

-  Compromise between STT note and reconstruction needs
- Label with 3 digits
-  highest significant digit indicates layer
-  Start at x-axis, similar to U.Heinz’s STT note)
-  Go counterclockwise
-  Odd numbers have always smaller radius than even numbers in the same layer, consis-tent with Table 9, TDR

**Seen from South end**

- North/South,Axial/Stereo    labels: **AN, AS, SS, SN**

## Punch-through symmetry:

- L5-18South is OPPOSITE of L5-18North

- Seen from North End

- Seen from South End

- North End

- South End

**Z-Axis**

## Naming of Layer 0 and 1 - RPhi

**3**

**4**

**2**

**1**

**12**

**11**

**10**

**9**

**8**

**7**

**6**

**5**

**Analog to Stave map**
**Seen from South End**

## Naming of Layer 0 Sensors/Hybrids in Z

- North End

- South End

**6**

**5**

**4**

**3**

**2**

**1**

**2**

**3**

**4**

**5**

**6**

**1**

**South**

**North**

**Z-Axis**

## Naming of Layer 1 Modules in Z

- South End

**South**

**North**

- Module 56-South

- 34-South

- 12-South

- 12-North

- 56-North

- 34-North

**Module/Hybrid**

**Z-Axis**

## Naming of Module/Staves – Part2

- How to address a module: **L4-05NA-1010**
- How to address a sensor located inside the run IIb detector?
- Use stave number and local sensor number
- It is in layer **3**, **N**orth side, **A**xial alignment
- in an outer radius stave (because of even stave number)
- the **6****th** sensor from the middle of the detector => outermost sensor on the north side
- Advantage: Everybody is able to find it using the map

**L3-08NA****-6**

## Naming of Production Parts

## Naming of Production Parts, Hybrids

- Name of Production parts conveys part properties.
- Hybrid properties to appear in naming:
- Layer 0 / L1 / L2-5 Axial / L2-5 Stereo
- I suggest to label production hybrids with a 4-digit number, following a suggestion by Jim Fast
- Highest significant number could indicate the hybrid type

- Example:	Hybrid-0001 Layer0
-  		Hybrid-1001 Layer1
- 		Hybrid-2001A Layer2-5 Axial
- 		Hybrid-3001S Layer2-5 Stereo

**How does the database handle preceding 0’s ?**
**Does the database accept hyphens?**
**How do we handle pre-production parts?**

- Highest Significant Digit

## Naming of Production Parts, Sensors

- Layer 0 / L1 / L2-5
- production sensors with a 3-digit number, preceded by
- L0, L1, L2
- Pre-production sensors have the version number appended.

## Naming of Production Parts, Modules

- Naming of junction cards/adapter cards

- No differentiation by layer
- Assign consecutive production numbers

- L2-5 Modules named after hybrid they contain
- + appendix to indicate 10/10 and 20/20 Modules
- Hyb-2001A (L2-5, axial hybrid) becomes either
- M-2001-10/10A or
- M-2001-20/20A

## Naming of jumper cables

- Differentiation by length

-  Naming of L0 flex cables

- Assign production numbers based on          layer and length

- Naming of twisted pair cables

- Consecutive production numbers

## Naming of Production Parts, Staves

- Are all staves alike? Yes!
- We can label staves with consecutive production numbers:  Stave-1, Stave-2, Stave-3, ... Stave-199 ...
- Once the staves are installed, they receive numbers that indicate their location. Location numbers and production numbers will be different and can be mapped onto each other using the database.
- The map can be put into excel and posted on the web.
-  That way everybody will know where his/her favorite stave/hybrid/sensor ended up. This knowledge is important for the operation of the detector.