Preparation for L2-5 silicon sensor arrival and L0/L1 PRR

•desperately expecting the first 130 L2-L5 sensors from HPK in July - probably coming in two batches only

•not yet arrived …

TYPE L1 L2-5 L0 TOTAL

QTY

3/4 0

3/5 0

3/6 0

3/7 130 130

3/8 130 130

3/9 270 270

3/10 110 270 380

3/11 270 50 320

3/12 270 50 320

4/1 106 270 60 436

4/2 270 56 326

4/3 400 400

4/4 400 400

4/5 55 55

4/6 0

4/7 0

TOTAL 216 2735 216 3167

Frank LehnerU Zurich

Run IIb meeting 7/24/03

Silicon sensor arrival - preparation

• we have a detailed QA plan with established procedures All people involved in that business should check on

http://www.physik.unizh.ch/~lehnerf/dzero/qa/qa.html QA document v4.0

definition of tests general procedures for testing note that depletion voltage determination has changed and we adopt

the HPK criterion• depletion voltage equals lowest voltage point where increase of

1/C2 versus bias is smaller than 2% • do not need interpolations - 10 V granularity is fine

Sensor QA part flow v2.0 detailed part flow for testing timing estimates

Procedures for sensor visual inspection v1.1 Guidelines for clean room and sensor S&H v2.0

Sensor arrival - preparation

• testing sites have started to setup www accessible directories for excel spreadsheets FNAL:

http://d0server1.fnal.gov/users/lipton/www/asptest/sensor_test.html KSU: http://www.phys.ksu.edu/hep/dzero/Testing SB: http://sbhepnt.physics.sunysb.edu/silicon/ UR: tbd

• spreadsheets will be copied (raw) into database

• only summary info on a special sheet will be transferred into ORACLE tables (via perl scripts)

• spreadsheet templates exist on http://www.physik.unizh.ch/~lehnerf/dzero/db/db.html and http://www.phys.ksu.edu/~evt/D0database

Sensor arrival - preparation

• following spreadsheet exists now (see E.v.T. talk): sensor_manufacturerinfo (for FNAL) sensor_keytest (for FNAL L2-L5 and UR L0/L1) sensor_fullstriptest (for SB, UR, KSU) sensor_irradiation (for KSU) sensor_mechanical (for FNAL, specific data format) sensor_finalgrade (for Zurich, UR)

• templates on http://www.physik.unizh.ch/~lehnerf/dzero/db/db.html and http://www.phys.ksu.edu/~evt/D0database

• please use these formats: use consistent units: pF, nA, MOhm, V, pA/V charts are optional and up to the testing site use consistent file naming containing sensor type and

number, location, date and spreadsheet type comment if necessary asap

Sensor arrival - preparation

• Key tests: initial registration into DB (Nina R.)

checking paperwork/floppy disk from vendor for completeness use of old-fashioned log book for sensor arrivals checking if accompanying test structure has been shipped inserting vendor info into “sensor_manufacturerinfo”

spreadsheet visual inspection (Nina R.)

visual inspection station in Lab A set up I will train her the next days follow visual inspection guidelines use traveler form during inspection (form attached to visual

inspection guide line) insert main visual inspection comment into

“sensor_manufacturerinfo” spreadsheet

Visual Inspection Traveler

• traveler is supposed to guide technician through the visual inspection steps

• only major comments will be entered in sensor_manufacturer-info spreadsheet

• estimate time for visual inspection: 20 minutes

Sensor arrival - preparation

•Key tests cont’d: IV and CV for all sensors FNAL: L2-L5 (Md. Mao, R. Lipton) UR: L0, L1 (R. Demina, S. Korjenevski) FNAL: 5% per batch I-stabil test for 24h

select sensors with suspicious I-V curves & flaws from visual inspection

enter data or work on program to transfer data into sensor_keytest spreadsheet

Sensor arrival – preparation

• 10% L2-L5 full strip test (FST) at KSU (35%) & SB (65%) FST information goes into “fullstriptest” spreadsheet summary sheet contains averages

for averaging leave out bad channels charts in spreadsheet optional

• initially 10% sensors per batch will be mechanically measured on OGP at FNAL measure: thickness, flatness, cut tolerances 2x (sides and

ends) operator: Gordie G. – program on OGP ready sensors which show chips/cracks at edges during visual

inspection have to be measured Jim provided mechanical data format containing target values

and mech. grading

Sensor arrival – preparation

•irradiation test and IV & CV characterization at KSU 1.5% of the sensors (irradiation on baby

detector and/or test diodes) two irradiation steps up to 2.5·E13 10 MeV

p/cm2 irradiate roughly half of the baby detectors

which are at KSU anyway for FST tests L0 & L1 baby detectors have to be shipped

from UR to KSU for irradiation

Sensor QA plan

Sensor arrival – preparation issues

• grading: in the beginning done by FL/RD filled in sensor_finalgrade spreadsheet will wait with this to get a more complete picture of first batches

• www access @ FNAL have to setup a d0server1 www-directory for access to

spreadsheets/data for manufacturer_info, key-tests and mechanical results: Ron’s www-directory ?

• sensor storage @ FNAL all incoming L2-L5 sensors will be stored during key tests in Lab A dry boxes for sensor storage ordered after the key tests the sensors, which will not leave FNAL, will be

stored in Lab C

• sensor shipping read S&H guideline do not ship more than 5 sensors per shipment

L0/L1 PRR preparation

• L0/L1 PRR will be on August 8th, 9 a.m. CT

• documents & infos posted on http://www.physik.unizh.ch/~lehnerf/dzero/prr/prr_l1.html

• following documents are prepared and are more or less finalized Note on electrical characterization of L1 sensors

editors: Marcel & Frank status: 2nd version exists plots and results complete waiting for feedback should we include results from 3 new L1 sensors?

Note on irradiation of L1 sensors editor: Frank status: version 2.5 plots and results complete results on strip capacitance are a somewhat weaker point,

went up from 1.1 pF/cm to almost 1.5 pF/cm results on strip capacitance versus HV after irradiation

thanks to Md. Mao

L0/L1 PRR preparation

• Note on comparison of strip measurements between SB and KSU editor: Bob status: 2nd version exists (from July) gives a very nice overview, shows the overall good agreement

between KSU and SB on many measurements with some exceptions though

wait for results on four sensor comparison

• Note on fluence determination and dosimetry checks at KSU irradiation facility editor: Tim status: 2nd version exists (from July) contains leakage current vs. fluence plots which are also in the

other note have different values for alpha (10 MeV p) due to different data sets

• Tim: 7.9E-17 A/cm using L1-11/12, L2-59/62• Frank: 11.6E-17 A/cm using L1-11/12, L2-59/62 and testdiodes

foil activation double check between FNAL & KSU within ~20%

L0/L1 PRR preparation

• older note on L2 irradiation document for L2-L5 PRR from March 6, 2003 editor: Regina & Tim status: updated by Tim last week changed all relevant fluence numbers in plots from 1

MeV eq. n to 10 MeV p alpha for 10 MeV for L2-59/62 is low: 6.8E-17 A/cm

• other existing notes: quality assurance document v4.0 -> will do some

smaller typo corrections visual inspection guidelines v1.1 sensor S&H document v2.0 generally in good shape …

L0/L1 PRR preparation

•all documents released to PRR committee by latest mid of next week

•everybody, please read and send comments in to all notes

•again, all notes are posted on:• http://www.physik.unizh.ch/~lehnerf/dzero/prr/prr_l1.html

L0/L1 PRR preparation

• first suggestions how to organize the PRR session (expect 3h in total):

• 20+5’ talks on general project overview response to L2-L5 PRR findings/comments presentation of general sensor QA program sensor characterization of L1 sensors probing comparison between FNAL/KSU/SB irradiation results on L1 & test diodes flux normalization cross checks

• need video link to SLAC, UR, SB, KSU, Zurich