Spreadsheet: 1328e37f-8701-4c79-873a-6d96649ec6dc
Sheet: Sheet1

Tests needed? | # [NAME] units needed | must be in string? | need beam? | risk | homework assigned to | Comments
Test reliability of components. Of particular concern are components with long MTTR such as tuners, piezos, and couplers. |  | n | n |  |  | with reasonable size test can catch major screw-ups, but can't assure we meet the MTBF goals. Some items can be tested separately with perhaps accelerated tests.  Nobus Vancouver talk has many numbers for this.
Evaluate cavity quench and breakdown rates |  | n |  |  | himel | Evaluate [NAME] allowable rate and recovery times
measure dark current (effects cryo load) (including how much is accelerated) and radiation (question for both electronics and people in tunnel with RF on). |  | y | n |  | kephart
Long term testing of cryomodules to evaluate degradation or other weaknesses before large scale series production begins |  | n | n
Check cryo control (maintain liquid levels, feedback time response etc.) and vibrations due to cryogen flows | 1 or 4 | y | n |  | himel | ask [NAME]
Check both static and dynamic cryo heat loads | 1 |  |  |  |  | Helps size cryoplant correctly
Check for cavity and quad vibration due to use of piezo tuners
check for emittance growth due to cavity misalignments | 200 | y | y | 5 |  | Beam wasn't accelerated to maximize sensitivity
Check for emittance growth before and after DFS steering | 10 | y | y | 5 |  | 10 RF units is marginal with RF gun.  All cryomodules had a quad to maximize the sensitivity
Check for quad vibration by seeing beam jitter | 10 | y | y | 5 |  | better to check quad vibrations directly with accelerometer
test beam based feedbacks (steering? Energy? Intratrain?) |  | y | y
Check for beam losses |  | y | y
check beam phase and energy stability |  | y | y
check dispersion effects of following earth's curvature |  | y | y
Provide a reason to build cryomodules that need to be built anyway to get industrialization going |  | n | n
KEPHART additions 7/30/06
Tight loop cryomodule system: Provide a test bed for evolving industrially produced cryomodules.  Scale is set by preproduction that is ~10% of full scale ILC production per year and desire to test preproduction cryomodules before full production | 7-10? | n | n
Understand RF control issues in a system with many cavities and cryomodules distributed over a large physical space |  | y | y
Assemble one or more full ILC cryostrings to evaluate cryo control, cooldown, vibration and other issues not easily evaluated with fewer cryomodules | 5 | y | n
Develop RF fault recognition and recovery software.  Insure that adequate instrumentation is available to sense likely faults. (coupler breakdowns, cavity quench, broken tuner motor, broken coupler motor, defective sensor…) |  | n | n
Evaluate performance of enough cryomodules reengineered for manufacturibility and cost reduction to approve changes for mass production |  | n | n
Is cryomodule instrumentation adequate but not excessive ( ie costly) |  | y
Mock up actual tunnel layout to explore installation,maintenance, and repair issues prior to large scale construction of ILC, could influence civil designs | 2 | y | n
Measure x-ray emissions and evaluate adequacy of shielding for personnel protection before mass production of equipment |  | n | n
Below added during meeting of 7/31/06
try a dirty vent on some cryomodules and see if things still work |  | y | n
Do above with a fast acting valve to see effects both of valve and of the dirty vent |  | y | n
measure dark current (including how much is accelerated) and radiation (question for both electronics and people in tunnel with RF on). |  | y | n |  |  | combine with line 27 (xray emission)?
measure heating of HOM coupler in presence of the beam |  | y | y
check for trapped HOMs |  | y | y