CC33FF88 detection in N detection in N22 pixel volume pixel volume

environmentenvironment

Rusty Boyd, Martin Doubek, Jan Godlewski

Greg Hallewell Sasha Rozanov,Vic Vacek

ATLAS ID Sonar Coolant analysis kickoff meeting, CERN, Dec 6 2009

Transmittingtransducer

Receiving transducer

Temperature sensors

L

CoolantInsulation

TransmitterDriver

Triggergenerator

DC biassupply

Amplifiercomparator

Latch

4mHzreadout

clock

Computer

45 kHzoscilator

Pressure gauge

Not a new idea: CNot a new idea: C55FF1212/N/N22 mixed for SLD RICH mixed for SLD RICH

and analysed by sonar (1988and analysed by sonar (1988))

Pixel group wants with an analysis Pixel group wants with an analysis of possible Cof possible C33FF88 leaks leaks

into the pixel nitrogen volume. into the pixel nitrogen volume.

This involves the attachment of one or two This involves the attachment of one or two temperature-monitored sonar analysis tubes temperature-monitored sonar analysis tubes (fabricated at CPPM with transducers installed) (fabricated at CPPM with transducers installed) at the output of sniffer pipes from the Pixel at the output of sniffer pipes from the Pixel nitrogen volume made available in USA15, nitrogen volume made available in USA15,

described here described here

Development System

Driver Logic AnalyzerAmpDisc.

Off line

Analysis

Transducer TransducerSignal generation, real time analysis, DAQ

- Sonar tube (or 2 tubes*) with pairs of Polaroid 6000 - Sonar tube (or 2 tubes*) with pairs of Polaroid 6000 transducers located a known distance apart transducers located a known distance apart

- - To start with: SLAC driver, receiver/discriminator boxesTo start with: SLAC driver, receiver/discriminator boxes

- Thermostatic bath / recirculator circulating ethylene - Thermostatic bath / recirculator circulating ethylene glycol through cooling loop on sonar tube glycol through cooling loop on sonar tube

- - Readout for temperature and pressure sensorsReadout for temperature and pressure sensors on sonar tube on sonar tube

- Logic analyzer to emulate previous SLAC readout system - Logic analyzer to emulate previous SLAC readout system (gated 50 kHz sound pulses, fast transit time clock) (gated 50 kHz sound pulses, fast transit time clock)

- Vacuum pump to evacuate tube, various valves, - Vacuum pump to evacuate tube, various valves, exhaust bubblers, insulation etc exhaust bubblers, insulation etc

* * Possibility of 2Possibility of 2ndnd tube & active C filter for TRT CO tube & active C filter for TRT CO22 leak study leak study

..

Requirements for CRequirements for C33FF88/N/N22

analyzer in USA15analyzer in USA15

Sniffer tubeentry here

TRT table

Sniffer tubeEntry here

Material delivered to Jan Godlewski for this installation:Material delivered to Jan Godlewski for this installation:

- 56 cm Sonar tube with pair of Polaroid 6000 transducers - 56 cm Sonar tube with pair of Polaroid 6000 transducers

- 5 pneumatically-actuated sampling valves with OPEN/CLOSE- 5 pneumatically-actuated sampling valves with OPEN/CLOSE indicators and Honeywell/Skinner K2P3LO actuators indicators and Honeywell/Skinner K2P3LO actuators

(5V 100mA,TTL Open Collector interfaceable) on air manifold (5V 100mA,TTL Open Collector interfaceable) on air manifold

- 2 Bubblers for back-to-back anti-syphon installation- 2 Bubblers for back-to-back anti-syphon installation

Other requirements:Other requirements:

- Rack- Rack- Vacuum pump to evacuate tube- Vacuum pump to evacuate tube- Various hand valves, insulation etc- Various hand valves, insulation etc

* * Possibility of 2Possibility of 2ndnd tube & active C filter for TRT CO tube & active C filter for TRT CO22 leak study leak study - - Assembly, test, installation manpowerAssembly, test, installation manpower- Dedicated computer interfacing to ATLAS network via ethernet- Dedicated computer interfacing to ATLAS network via ethernet

..

* = PT100

Back-to-back Bubblers (anti-syphon)

in vented boxes

Sampling lines from different tracker envelope regions,

entering USA15 from UX15

Active Carbon filter for CO2 removal(replacable or in-situ regenerable)

*

Thermostatic bathrecirculator

Jacketed sonar tube 1:C3F8 in N2

Jacketed sonar tube 2: C3F8, CO2 in N2

* *Insulated box

Possible monitor for CPossible monitor for C33FF88 & CO & CO22 ingress into ID volume ingress into ID volume

Suction by extraction to surface or UX15

trough

Sketches of piping for proposed pixel/SCT volume C3F8 in N2 sonar analyzer/sniffer: Left: Phase 1 installation with single tube. Right: second phase with second tube and possible effects sampling of CO2

NIM Crate (5U)

Rack for USA15 position Y59—24-A2 : neighbouring rack height ~ 38U (short)

6U panel with pneu-matic valves, actuators,

air regulator behind

FRONT REAR

98

cm s

ona

r tu

be

(ini

tial)

SHELF

56cm

so

nar

tu

be

(1 o

r 2

late

r)

Act

ive

C f

ilter

(d

iim. u

nkn

ow

n)

4 U panel: E-LMB, TVC, bias supplies for xducers

etc. behind panel

LOGIC ANALYZER ON PROJECTING FRONT SHELF

Assume 50/50 depthwise split for panel-mounted electronicsand vertically-mounted sonar

tubes

Space for thermo-circulator :

choose to fitValve selection between

mixed water & chiller

Sonar tube lengths are internal,between flanges:

Tubes assumed to be inIndividual Armaflex jacketng

56cm

so

nar

tu

be

(1 o

r 2

late

r)

In addition to sniffer tubesand air extraction, rack requires

8 bar compressed air entry, mixed water entry/exit

and selection between M.W. and chiller

56cm

so

nar

tu

be

(1 o

r 2

late

r)

Example (1) of Valve Driving and Position sensing reconciliation (CPPM)

Example (2): single Valve Driving and Position sensing reconciliation

Present status:Present status:

Sonar should have resolution to do (sub percent 10-3 -10-4) C3F8 in N2

Marzio and Beniamino are prioritizing with Jan for priority to finish the work in USA15 before the end of

the year so to have at least a manual readout.