Short Introduction to MuTr at PHENIX

BY AHMED AL-JAMEL

NEW MEXICO STATE UNIVERSITY2002

MuTr Group Ahmed Al-Jamel 2002Some of the MuTrians with some of the “MuIdrians

MuTr at PHENIX

● MuTr stands for Muon Tracking.● The MuTr subsystem has two arms:

North and South.● Both arms are completely installed

now. The North was recently installed, and will be used for the first time in RUN-03.

Components of Each arm

● Each arm has three stations: [1]. Station 1 [2]. Station 2 [3]. Station 3 Interaction

region IR

S3

S2

S1

Station 1● Station 1 is divided into

four quadrants

● Each quadrant has three gaps : gap1, gap2 , gap3

● Each gap consists of an anode plane sandwiched between two continuous cathode planes.

● Thus in each quadrant, we have 6 cathode planes

● --> 3 hit points (6 -coordinates) from Station 1.

A quadrant

Station 2, S2● Station 2 is divided

into 8 octants, or chambers.

● Each octant has 3 gaps: gap 1, gap 2, gap 3.

● Each gap consists of an anode plane sandwiched between two continuous cathode planes.

● -----> 3 hit points from S2.

An octant from S2

Station 3, S3 (The biggest)

● Station 3 has 8 octants● Each octant has two

gaps: Gap 1, Gap 3.● Each gap consists of

an anode plane sandwiched between two cathode planes.

● ----> 2 hit points .

Some octants of S-3 while they were comissioned in 905.

MuTr SubsystemsThese are the top MuTr operating systems:

( PLEASE SEE THE STANDING ORDERS OR THE MUON HOMEPAGE TO LEARN MORE!)

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● High Voltage HV : ~ 1825-1850V on the anode wires.

● Low Voltage LV : For the electronics and cameras.

● Gas System: To mix and supply the gas to the chambers.

● Front End Electronics FEM: To read the signals from the cathodes ----> DAQ.

● Optical Alignment System OASys: To monitor the relative motions of the chambers ...

● Others: water flow through hoses to keep the temperature of the FEMs low. Air tubing, to reduce the humidity. Also, and without doubt, the lamp shades (magnets)

High Voltage GUI

● How to read from this GUI: Example: N341 means North, S3, Oct4, gap1.

Currents

Voltage

FEEs and cooling

Cooling

FEE boxes

Optical Alignment System

Cameras:7 camerasper Octant

Lamp Shades (magnets!)

Scaffolding for the North

Other lamp shades to be installed here

Physics

● Looking for peaks of j/psi from Dimuon analysis

● Heavy Quark production via Single High Pt muons...

● Others, of course, in the muon webpage....

P.S. This figure is borrowed from Raphael's muon software tutorial

MuTr Standing Orders

● The MuTr Standing orders are written as a guide to the people on shift during RUN-03.

● Please visit: http://www.phenix.bnl.gov/phenix/WWW/run02/manual/orders/mutr/mutr_standing.html

● Read them, and if you have a question, please feel free to ask the experts !.