stations there are six stations of rpcs. they are 1-3 north, and 1-3 south. rpc3srpc2s rpc1srpc1n...

StationsThere are six stations of RPCs. They are 1-3 north, and 1-3 south.

RPC3S RPC2S

RPC1S RPC1N

RPC2N RPC3N

This document is available at http://www.phenix.bnl.gov/WWW/trigger/muonupgrade/nomenclature/numenclature.pptKeller Andrews, June 26, 2008

Stations (cont.)

• Each station is composed of eight octants.• On station two and three, each of the octants

is divided into two half octants to make them easier to handle.

• This is done because of the Muon tracker chambers divided into octants.


Half-octants

• Each half octant is composed of separate modules.

• Station three is made up of three modules, named A-C.

• Station two is made up of four modules, named A-D.

A

A

B

BC

D C

Station 2 Station 3This document is available at http://www.phenix.bnl.gov/WWW/trigger/muonupgrade/nomenclature/numenclature.ppt

Keller Andrews, June 26, 2008

Module Side NamingThe outer radius side is the

side farthest away from the beam pipe

The inner radius side is the side closest to the beam pipe

The half-octant side is the side that shares a perpendicular side with another half octant

The octant side is the side that (if you put two half-octants together) would be the octant boundary.

Outer Radius Side

Inner Radius Side

Oct

ant S

ide

Hal

f-O

ctan

t Sid

e


ModulesEach module is composed of several parts.

The aluminium casing, referred to as the module casing (easy to remember)

Two gas gapsA set of readout stripsFront End Electronics (FEE) consisting of:

•An Amplifier•A Discriminator

Inside of the module casing, the readout strip is placed between the two gas gaps with the readout electronics on the outside of the module.This document is available at http://www.phenix.bnl.gov/WWW/trigger/muonupgrade/nomenclature/numenclature.ppt


Gas GapsEach gas gap is composed of the following:Two parallel plates of Bakelite coated on one side

by graphite (for conductivity)Polycarbonate spacers in between the plates to

keep them apart a uniform distanceTubes for gas in and out on each corner (two in,

two out)High voltage is connected to the outer surface of

oneGround is connected to the outer surface of the

other.This document is available at http://www.phenix.bnl.gov/WWW/trigger/muonupgrade/nomenclature/numenclature.ppt


Readout Strips•The readout strips (also called the signal plane are in between the two gas gaps•Each strip is numbered according to it’s corresponding strip in station one•The strip in the center is completely radial and is numbered

•16 on the bottom •48 on the top

• You then place 15 imaginary strips on each side of the center strip•This leaves some strips off on the sides of the module. This is called dead space.•For example: the signal plane for Prototype 4,Module A starts with strip 8 and ends on 25 on the bottom. 8 16

48

25This document is available at http://www.phenix.bnl.gov/WWW/trigger/muonupgrade/nomenclature/numenclature.ppt


Octant/Half-Octant Naming SchemeThe half-octants are named

in order from one t0 eightOne is the top octant, two is

the clockwise (when viewed from the IR), adjacent octant, three is the next clockwise, adjacent octant, and so on.

Each half octant is named according to it’s octant, and which side (clockwise or counterclockwise) it is on

1

2

3

4

5

8

7

6

1co 1cl

2co

2cl

3co

3cl

4co

4cl


stations there are six stations of rpcs. they are 1-3 north, and 1-3 south. rpc3srpc2s rpc1srpc1n...

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