h1. Wire Scanner and Collimator Meeting Minutes, May 23, 2006
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h2. Contents
{maketoc}^
h1. Attendees:
| James Bong, | René Correa, | Tim Montagne, |
| Tom Porter, | Patrick Krejcik (_absent_), | Doug Murray |
| Hamid Shoaee | Doug McCormick | Bob Fuller |
h1. Agenda:
# Status updates; wire scanners, collimators, and BC1 motion.
# Procurement status
# Diagram status
# Software status
# Look at updated schedule
# Issues and Concerns
h1. Previous Actions:
# *James* will order the remaining motion control equipment for injection commissioning.
# *Doug* will request 4 ethernet ports for collimator and beamline motion testing in Bldg 26.
h1. New Actions: (_summary; see details below_)
# *Doug* will check that existing Linac collimators will be instrumented with EPICS controls.
h1. Minutes:
# Review locations of wires and collimators
## We reviewed the location of wire scanners and collimators on a map of the LCLS areas.
## There was some discussion about existing collimators in sectors 29 and 30. ^ *Action*: *Doug* will check that existing Linac collimators will be instrumented with EPICS controls. ^
# We reviewed the schedule and upcoming tasks:
## James is updating the electrical interconnect and block diagrams for wire scanners.
## Tom reminded us that switches will be needed on collimators, 5 switches in total.
## We discussed cable lengths, and Doug McCormick asked about LVDT signals. It was pointed out that the Highland LVDT module compensates for cable lengths, after proper calibration.
### He mentioned that results from the step-counting method of measuring position are often within comparable range of the Sony magnescale measurements.
## James will check on the status of our hardware order; he must also delete the Highland component from the Hytec order, and then order Highland equipment separately.
## Bob reminded us that we need to have the cable plant understood by end of May. Cables must be identified and entered. James said his work is 75-80% complete, but needs naming scheme information.
## Doug McCormick has spoken with Photonis and Hamamatsu regarding specs. He mentioned that Philips has sold their tube company which is now known as Photonis. He said the price is $335 for PMT and base from Hamamatsu with 4 - 6 week delivery. Bob asked if a Hamamatsu order implied extra delay because they're a foreign vendor. Doug thought not, but we agreed it was worth looking to buy from vendors with representatives in this country.
## Doug then asked when the detectors and cabling were needed. Bob pointed out that the downtime is from Aug 1 to Nov 31.
## Doug then mentioned he has a light box for testing. Nice to test Caen equipment against Camac readout.
## Tim mentioned he expects to have a new wire scanner assembly in mid June.
## Doug McCormick will ask Tim about stands outside of the meeting time.
# Rene said the design review for the first collimator was held last Thursday. He mentioned that some changes are forthcoming.
# We discussed software status. Doug Murray mentioned that the software for the motor, LVDT, Industry Pack carrier and charge integrating adc is all underway.
# Doug McCormick estimates he is halfway done with first ion chamber, fast ion chambers are ready.
## He also suggested we talk with Arturo to use the same gas lines as the PLIC.
# Tom gave some motor information to Tim regarding the KML62 motor. We are waiting for delivery to test with wire scanners.
## He pointed out that non-teflon wiring is a problem. He is expecting the motor within 2 weeks.
## The LVDT for BC1 has been ordered.
# Rene also mentioned that the BC1 collimator might not be available until August.
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