Procedures for gluing light guides

All questions can be accompanied by yes/no checkboxes and, in some cases, text boxes for inputting information about successful or failed steps.

Front Page

• Front Page Stuff
• Reference Document:

Barrel Calorimeter Light Guide Assembly and UV Gluing Procedure, Scot Spiegel, March 28, 2012

Inspection of Components

• Eighty (40) light guides unpacked?

Four (4) of each size, "A" through "K?"

• Light guides inspected for scratches and other abberations?
• Checked that all light guides are acceptably sized using the gauge plate?
• Module face inspected for scratches, dead fibers, and other abberations?

List number/location of dead fibers.

Cleaning of Components

• Module face cleaned?
• Light guide faces cleaned?
• Light guide LED mounting hole cleaned?

Setup and Preparation

• Light guide alignment fixture fit to module face?
• Glue dispensing unit powered on?
• Settings correct (Pressure - 25 psi, Time - 0.050, Vacuum operational)?
• UV light source powered on?
• Rotary vacuum pump powered on, valve to wand assemply open?
• Record glue batch/bottle number.
• Glue inspected for opacity, consistancy, and loose particles?

Column One

• Light guides arranged from "A" at top of wand to "K" at bottom of wand?
• O-ring surfaces checked, vacuum gauge reads appropriate value?
• Vacuum wand elevated, suction will hold light guide column?
• Glue applied, set successfully?
• Excess glue removed?
• Glue joints acceptable?

If not, give correction page (to follow).

Column Two

• Light guides arranged from "A" at top of wand to "K" at bottom of wand?
• O-ring surfaces checked, vacuum gauge reads appropriate value?
• Vacuum wand elevated, suction will hold light guide column?
• Glue applied, set successfully?
• Excess glue removed?
• Glue joints acceptable?

If not, give correction page (to follow).

Column Three

• Light guides arranged from "A" at top of wand to "K" at bottom of wand?
• O-ring surfaces checked, vacuum gauge reads appropriate value?
• Vacuum wand elevated, suction will hold light guide column?
• Glue applied, set successfully?
• Excess glue removed?
• Glue joints acceptable?

If not, give correction page (to follow).

Column Four

• Light guides arranged from "A" at top of wand to "K" at bottom of wand?
• O-ring surfaces checked, vacuum gauge reads appropriate value?
• Vacuum wand elevated, suction will hold light guide column?
• Glue applied, set successfully?
• Excess glue removed?
• Glue joints acceptable?

If not, give correction page (to follow).

Correction Page 1

• Light guide column to be corrected removed successfully?
• Module face/light guide faces re-cleaned?
• Light guides arranged from "A" at top of wand to "K" at bottom of wand?
• O-ring surfaces checked, vacuum gauge reads appropriate value?
• Vacuum wand elevated, suction will hold light guide column?
• Glue applied, set successfully?
• Excess glue removed?
• Glue joints acceptable?

If not, give correction page.

Correction Page 2

• Light guide column to be corrected removed successfully?
• Module face/light guide faces re-cleaned?
• Light guides arranged from "A" at top of wand to "K" at bottom of wand?
• O-ring surfaces checked, vacuum gauge reads appropriate value?
• Vacuum wand elevated, suction will hold light guide column?
• Glue applied, set successfully?
• Excess glue removed?
• Glue joints acceptable?

If not, give correction page.

Correction Page 3

• Light guide column to be corrected removed successfully?
• Module face/light guide faces re-cleaned?
• Light guides arranged from "A" at top of wand to "K" at bottom of wand?
• O-ring surfaces checked, vacuum gauge reads appropriate value?
• Vacuum wand elevated, suction will hold light guide column?
• Glue applied, set successfully?
• Excess glue removed?
• Glue joints acceptable?

If not, give correction page.

Post-Procedure Inspection

• Light guide edges fit within module boundaries?

If not, assess viability of replacing problematic guide. Light guide replacable?

• If so, give correction page.

If not, consult superviser immediately.

• Gluing procedure completed (including necessary corrections)?

If not, consult superviser immediately.

Next-Day Inspection

• All light guides firmly attached (no breaks in the glue)?
• (Re-check) Light guide edges fit within module boundaries?
• (Re-check) Glue joints acceptable and all excess glue removed?