Nov 3-5, 2009 Calorimetry Backup

BCAL Fabrication Readiness Review BACKUP

Draft Charge

The goal of the Barrel Calorimeter Readiness Review is to assess whether the University of Regina is ready to begin production of the fabrication of the Hall D barrel calorimeter modules. Specifically the following questions need to be examined:

1. Environment
   1. General
      • Are the MSDS information sheets available for all products used during production?
      • What support do you get from university EH&S services?
   2. Fibers
      • Is the lighting and handling of the fibers performed in accordance with the recommendations by Kuraray?
      • Is the storage of fibers such that damage will be minized before and during fabrication?
   3. Lead
      • Are proper procedures taken to minimize worker exposure to lead during handling?
      • Is the storing and handling organized to minimize any deformations or kinks of the swaged lead?

1. Parts: Acceptance Testing
   1. Fibers
      • Are the testing procedures clearly defined?
      • Is the criteria for rejecting fibers to be used in the matrix clearly specified?
      • How are the fibers selected for use in a given module?
      • How is the origin, i.e. fiber batch number, traced to each module?
   2. Machined parts
      • What acceptance will be performed to verify dimensional tolerances of all features of the Al front and base plates?
2. Matrix: Acceptance testing
   1. Which measurements, and what frequency is planned for dimensions of the matrix during stacking? What documentation is recorded after each layer is added?
3. Matrix: Recovery
   1. What are the procedures for reporting an anomally in measurements during the stacking?
   2. What are the procedures for rectifying any problems encountered during stacking? Is this documented?
4. Training:
   1. What are the training procedures for first-time workers in each of the areas where they will work?
5. Machined module
   1. How are the dimensions checked and verified against drawings?
   2. How is the light transmission measured for a completed module?
   3. How is the uniformity of transmission determined?
   4. What criteria are used to accept a completed module before shipment?

Contract Requirements

1. Final Construction Plan
2. Final Acceptance Test Plan
3. Quality Assurance Plan.

Testing and Tracking: Section 5 of the Statement of Work

Testing

The vendor shall include a draft Acceptance Test Plan with their contract proposal with the final plan to be formally approved by JLab at the Readiness Review. The following items must be included:

1. Acceptance of lead sheets upon receipt
2. Acceptance of fibers upon receipt
3. Acceptance of swaged lead sheets
4. Acceptance of fibers during sorting
5. Dimensional tests of aluminum base plates
6. Dimensional tests of lead-scintillation matrix during stacking
7. Acceptance of completed modules based on the following criteria:
   1. Dimensional testing of modules after machining
   2. Measurement of light transmission of completed modules.
   3. Determination of the uniformity of transmission across the face of the BCAL module, e.g. digital photos showing the number of damaged fibers.
8. Measurements of the response of a sample of completed modules to cosmic rays.

Tracking

The vendor must keep a record (travelers) of all raw materials and inspections that are used in the construction of each module, and document the procedures followed during fabrication.