CMS EMU Alignment Meeting at Fermilab

14, 15 Jan 2000

Present: D. Eartly, E. von Goeler, R. Lee, D. Loveless, S. Lusin

K. Maeshima, J. Moromisato, R. Terry, L. Uvarov

The goal of this meeting was to report on the status of alignment

tasks and organize the effort of the alignment group for the series

of tests in the next few months (SLM, ISR) and the Lehman Review

(11-13 April '00).

SLM test -- The goal of the SLM test is to build a complete SLM line

at Fermilab and develop a readout system that stores data from

all sensors. This is both a hardware and software exercise.

An SLM line has cross-hair lasers with 10 DCOPs sensors, 2 R

sensors, Z sensors, etc and a prototypye POINT 2 transfer plate.

Completion of this test is essential before moving the endcap

alignment equipment to CERN for the ISR test. We expect to set up the

SLM test during Feb and early Mar. We anticipate little time for

monitoring the results of the SLM test before sending the

equipment to CERN for the ISR test.

* Status of hardware --All hardware for the SLM test items is designed

and drawings completed. Northeastern has completed all the batch 1

machining and most of the batch 2. The estimated date to

completion of batch 2 is 1 1/2 weeks. Wisconsin has completed the

batch 3 machining.

The laser mounts do not fit the supplied lasers (due to the optics heads)

and must be modified. Purchased 306 SS sensor adjusting screws are too

short. Substitute adjusting screws will be made at Fermilab.

The MAB interface plate was made from Delrin and has class H6 and H7

fits which may not be possible in a soft material like Delrin.

Wisconsin will make another MAB interface plate from Al.

* Status of electronic parts -- Most parts have been ordered. Some parts

were not available via Northeastern and Sten Hanson found some local

vendors and some parts were ordered on 14 Jan '00. Sten believes

he can find the remaining items at Fermilab. Assembly of 10 sets

(mother board and sensor board) will begin at Fermilab as soon as

the required parts arrive.

We have ordered 15 sets of PC boards (sensor, mother, and interface

boards). We have ordered parts for 10 sets. Page (1)

CMS EMU Alignment Meeting at Fermilab

14, 15 Jan 2000

We have 15 sets of PC boards (sensor, mother, and interface

boards). We have ordered most parts for ten (10) sets.

We have 4 readout boards at this time. One board (voltage regulator)

failed and was repaired/tested at Fermilab on Friday.

* Status of DCOPs sensors -- We currently have 12 sensor boards (4 flat, 8

bi-directional) and an additional 12 sets of CCDs (48 CCDs). In an

SLM line we plan to have 3 uni-directional and 11 bi-directional

DCOPs sensors and we plan to make another 6-7 more bi-directional

sensors. We should have sufficient sensor boards and spares for

the ISR test at CERN.

* Status of DAQ system -- Fermilab has chosen to use the Agilent (HP)

commercial DAQ system and a prototype was purchased. This is the

same system that CDF is using for the endplug calorimeter and we

expect to get help from the experts at Fermilab. The Agilent system

has 3 serial ports which we will use for reading out the SLM sensors,

the axial sensors and the various analog sensors (radial, proximity,

Z tube, etc) of the endcap alignemt system. The Agilent system

is running at Fermilab and reading out 2 of the serial I/O cards.

Northeastern is developing a DAQ system based on Labview which is

working of the desktop computer. Due to timing problems it does

not yet work on the laptop PC. Northeastern plans to use Labview

for testing DCOPs at Northeastern. This DAQ system is a backup in

case we have problems with the new Agilent system.

ISR test -- The ISR test is a joint test at CERN with the link and barrel

alignment groups. We anticipate going to CERN to begin setting up

in late Mar '00.

The primary goals of the ISR test are:

test and verify the transfer plate resolution and stability.

test interface to MAB system

develop analysis procedures to reconstruct all the data.

develop photogrammetry procedures and check the calibrations

of the sensors.

monitor resolution and stability of the endcap alignment system.

Page (2)

CMS EMU Alignment Meeting at Fermilab

14, 15 Jan 2000

* Co-ordinator -- Dave Eartly will serve as the co-ordinator of the ISR

test. Dave will go to CERN in early Feb '00 to co-ordinate

schedules and hardware, survey, setup details details with the link and

barrel alignment groups.

* ISR tasks -- Fermilab will build an SLM line and test all hardware and

the DAQ system for all sensors. Northeastern will measure and

calibrate all DCOPs sensors. One option is to use special masks

on a calibration bench to allow us to locate pixels to 5-50 microns.

Fermilab will design and get bids. Fermilab will also look into

multiline laser sources and calibration to handle more general future

DCOPS sensor geometries. This may be a better solution couple with

Optical CCM measurements.

Northeastern wil develop an analysis plan for the ISR test and present

it to the alignment group in early Feb '00. This plan should cover

the goals of the test for the endcap alignment: resolution,

stability, interface to barrel and link, reconstruction of sensor

locations, confirmation of transfer plate connections, and

development of efficient databases and file structures.

DAQ system -- A vigorous discussion took place on the relative merits of the

Labview and Agilent DAQ systems. At this time we are continuing to

investigate both systems. Northeastern will use Labview for their

DCOPs tests at Northeastern. Fermilab will develop the Agilent

system with the idea it can be used in CMS since it has good

connectivity via ethernet and can do controlling as well as readout.

We need additional experience before making a final decision on a

system. Both systems were advertised as "easy to learn". We expect

to have a much better sense of how easy they are in a few months.

WBS Budget and schedule -- Dick presented the new version of the WBS (MS

Project file) showing the list of tasks and the budgeted money

for each. We spent some time trying to allocate tasks. Northeastern

would like to have some time to become acquainted with the new task

list and will send comments to Dick within a few weeks.

DSP programming -- Richard Terry is beginning programming of the DSP chip

by modifying the cycle time. Eventually we want to program the

DSP chip to find the centroid of a sensor measurement and report

only this centroid to the DAQ system. Page (3)

14, 15 Jan 2000

PNPI visitors–FNAL has issued invitations and tentative arrangements are made.

We await Visa approval for V. Sknar and E. Orichtchine. We hope they may

be able to help us with the ISR testing. They will work on readout system

development and hardware, new DCOPS front end development, and DSP

programming. G. Makarenkov (mechanical design) remains at FNAL

through February to complete Transfer plate and support designs.

Purdue U visitor–FNAL has issued a visiting appointment for R. Lee starting in

early February. Purdue U has apporved the arrangement. He is starting to

work with Kaori on C++ interface programming, etc and will help in ISR

software setup. After that he will begin to do simulation work. His term will

will extend for one or two years.