# Presentation: 526485

## Preparation for silicon sensor arrival

- sensor delivery schedule aggressive
- expect 130 L2-L5 sensors each in July and August
- sensor lot/batch will likely be in the order of 50-70
- from 9/2003 until 4/2004 270 L2-L5 sensors each month
- first L0/L1 (110 pcs) sensors in October 2003 (but effectively later)

- Frank Lehner
- U Zurich

## 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](http://www.physik.unizh.ch/~lehnerf/dzero/qa/qa.html)_
- QA document v4.0
- definition of tests
- general procedures for testing
- Sensor QA part flow v2.0
- detailed part flow for testing
- timing estimates
- Procedures for visual inspection v1.0
- Guidelines for clean room and sensor S&H v2.0

## Sensor arrival - preparation

- Key tests:
- initial registration into DB
- checking paperwork from vendor
- inserting vendor info into “vendor information spreadsheet” -> perl script -> database
- visual inspection
- follow visual inspection guidelines
- use traveler form during inspection (form attached to visual inspection guide line)
- insert visual inspection comments into “key test spreadsheet”
- I-V and C-V
- data go into “key test spreadsheet”
- all L2-L5 sensor key tests at FNAL
- Technician for DB and visuals: Nina Ronzhina
- Physicists for IV & CV: Md Mao/R.Lipton

## Sensor arrival – preparation

- 10% L2-L5 full strip test (FST) at KSU (35%) & SB (65%)
- sensors selected for FST by RD and FL
- FST information goes into “full strip test spreadsheet” -> perl -> database
- 5% sensors are subject to long term bias test at FNAL (Md. Mao/R. Lipton)
- selection based on visual inspection and I-V results from key tests
- initially 10% sensors per batch will be mechanically measured on OGP at FNAL
- agreement what to measure: thickness, flatness, cut tolerances 2x (sides and ends)
- sensors which show chips/cracks at edges have to be measured
- not yet an agreement on data format

## Sensor arrival – preparation

- irradiation test at KSU
- 1.5% of the sensors (irradiation on baby detector)
- 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 (do we need a higher dose for them?)

## Sensor QA plan

## Sensor arrival – preparation questions

- Questions:
- Is Nina trained for visual inspection?
- Is the visual inspection station in Lab A ready?
- When do we have the vendor information and key test spreadsheet ready?
- Do we have dry boxes for sensor storage at FNAL?
- Are the programs for the mechanical measurements on the OGP written?
- Is the output format defined?

## 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 or have to be prepared/finalized
- Note on electrical characterization of L1 sensors
- editor: Marcel
- status: 1st version exists
- plots and results are there, need only additional layout work
- I will finalize it
- Note on irradiation of L1 sensors
- editor: Frank
- status: 2nd version
- plots and results are there
- however results on strip capacitance are a very weak point, went up from 1.1 pF/cm to 1.5 pF/cm
- no reults on coupling capacitor value after irradiation
- no results on strip capacitance versus HV after irradiation

## 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
- to be included in electrical sensor characterization note or separate note ??
- 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
- 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: unchanged
- do we need an update of this at all?
- other existing notes:
- quality assurance document v4.0
- visual inspection guidelines v1.0
- sensor S&H document v2.0
- generally in good shape ...

## L0/L1 PRR preparation

- all documents released to PRR by July 25 (i.e. two weeks in advance)
- everybody, please read and send comments in to all notes by latest July 20
- again, the notes are posted on:
- _[http://www.physik.unizh.ch/~lehnerf/dzero/prr/prr_l1.html](http://www.physik.unizh.ch/~lehnerf/dzero/prr/prr_l1.html)_