IB1 Vertical Test Cryostat (ILCTA-IB1)

1
IB1 Vertical Test Cryostat (ILCTA-IB1)

• Project Requirements
• 16.December 2005

2
From Giorgios Re-org peptalk

• Vertical Test Cryostat (ILCTA-IB1)
• Goal Design, procure components, assemble, and
  place into operation a vertical test cryostat
  system for high power testing of single 3.9GHz
  and 1.3GHz cavities
• Task Manager(s) C. Sylvester / (T. Peterson )
• Task Engineer(s) M. Wong (Mechanical) / A.
  Lounine (RF) / R. Carcagno (LLRF)
• Task Designer C. Reid
• Task Scientific Input C. Ginsburg (Project
  Physicist) / Oleg Prokofiev (Applications
  Physicist)
• Task Procurement P. Olderr / M. Steinke
• Task Deliverable Complete vertical test cryostat
  system

superceded
3
Task Scope

• Deliverable
• Build complete vertical test cryostat system for
  testing single bare 1.3 GHz TESLA-style cavities
  for ILC (and dont preclude 1.3 GHz PD cavity
  tests) by 30Sept06
• Coordination
• Cosmore (Task Manager) with help from Camille
  (Project Physicist)
• Today 1st pass project requirements
• Aim to develop 1st cost/schedule estimate 15Jan06
• Subtasks
• Design cryostat What equipment do we need inside
• Procure components
• (Cryostat Build will be outsourced)
• Build infrastructure as needed pit, power, cryo,
  What instrumentation(power
  reqs) do we need outside
• Assemble remaining items
• Commission What test instrumentation do we need

For today concentrate on these issues
4
Start VMTFTESLA design

• 6.7m (22 foot) deep shaft, filled with a
• 6.4m (20 foot ) deep, 1.3m (50 in ) diameter
  fiberglass shell, recessed 0.6m (2ft), into which
  is placed a
• gt3.5m deep, 1.1m diameter dewar, into which a
• gt3.4m deep, 0.6m diameter insert is placed, sized
  to fit single 1.3 GHz Tesla-style cavity

VMTF
TESLA
Design in progress. Need to identify any
test-driven specs asap!
5
RF

• Parameters
• lt400 W (low power) 1.3 GHz
• Cable rather than waveguide inside dewar
• RF
• People Andrei Lounine (start March) and an
  Eng.Phys. to be named later (gtJan)
• Cost/schedule estimate
• Initially use a combination of A0 and Cornell
  designs
• LLRF
• People Ruben Carcagno
• Cost estimate exists for ILC LLRF! (RC,
  B.Chase,G.Cancelo)

6
RF system

• LLRF (from Ruben et al.)
• VME crate
• Spare CPU
• Simcon 2.1
• Simcon 3.1
• Timing Board
• Fast ADC
• Function Generator
• Vector Modulator
• Master Oscillator
• Oscilloscope
• Misc. Hardware
• RF (model after A0 thanks Tim Koeth)
• Preamplifier
• TWT amplifier (400W)
• Dual-directional coupler
• Coaxial phase shifter
• Mixer
• Three-channel power meter

Should project scope Include LLRF developmt?
Padamsee p.161
7
A0 vertical dewar test stand
Power heads inside
Phase shifter
mixer
Safety interlock
Pre-amp
TWTA in cave by dewar
Signal generator not shown
8
Tests wed want to make(?)

• X-ray measurement position resolution (Oleg)
• Dark current measurement w/Faraday cup (Allan
  Rowe?)
• Magnetic field measurements, including magnets
• Piezo tuner
• Move the cavity up/down wrt antenna motor
  control position detector
• Quench detection thermometer array
• Camera to view bubbles from heated He also to
  see too-low He level (Cristian Boffo?)
• Real-time analysis software
• Bake-out heaters to speed up dewar warming up
• Vacuum gauges
• Radiation detectors (safety)
• Temperature measurements?
• Helium level probe
• Thermometers inside for bath temperature

9
Other stuff requiring thought

• Radiation shielding neutrons??