# Presentation: 223124

## ILC R&D at FermilabH. Carter

**ILC R&D at Fermilab****H. Carter**

**    **_**1.3GHz Single Cell Processing**_
** ****12 single cell cavities being procured (6 are**
**    ****in house at this time)**
** ****Processing will occur at ANL facility**
** ****HPR will occur at FNAL A0 facility**
** ****Full thermometry system to support this**
**   ****program is under construction**

**              **_**Cavity Fabrication**_
**  ****Procure sufficient 9-cell 1.3GHz **
**   ****cavities in FY08 (24) & FY09 (48) to **
**   ****support the ILC S0 goal of achieving**
**   ****a reproducible gradient of 35MeV/m**
** ****Continue to work to develop U.S. **
**   ****cavity fabricators**
**  ****Explore alt. fabrication strategies**

** **
**             **
**        **_**Cavity Horizontal Test**_** **
**  ****Commission and operate HTS in support**
**    ****of dressed cavity testing for **
**  ****3.9GHz CM Project**
**  ****1.3GHz CM Program**

**   **_**Cavity Failure and Improvement of  Manufacturing Yield**_
** ****Goal is to achieve >90% yield in manufacturing and processing**
** ****Present world wide yield is <50%**
** ****Requires focused R&D to study failure mechanisms related to**
** ****Raw materials**
** ****Manufacturing processes (Rolling, forming, EBW, etc.)**
** ****Cavity processing (BCP, EP, and HPR)**

**              **_**R&D on Cavity Processing**_
**  ****Mechanical Polish (tumbling) for bulk material **
**   ****removal (first 120-180 microns)**
**  ****Systematic study of EP process (S0 plan)**
** ****Nine cavities (3 from each region) are interchanged**
**  ****and regionally processed and tested**
** ****Additional processing parameter studies are **
**  ****planned in the Americas and Asian Regions**

**       **_**Main Linac EDR:  Cavities & Cryomodules**_
**  ****Participate in the development of the ML document sections dealing with**
**    ****cavities and cryomodules as well as cryogenic systems**
**  ****Develop cavity and CM engineering designs that incorporate**
** ****cost reduction methods**
** ****value engineering principles**
** ****design for manufacture techniques**

**See Andy Hocker’s Poster for Details**

**     **_**ACD Cavity Shapes**_
** ****U.S. main focus on Tesla Shape**
**  ****however two alternate designs **
**  ****are being explored**
**Reentrant shape (Cornell)**
**Low Loss shape (JLab)**

**See Nandhini’s Poster for Further Details**

**     **_**Cavity QC and Tuning**_
**  ****Mechanical inspection and measurement **
**    ****of formed half cells**
**  ****RF measurements (bead-pull) and**
**   ****tuning of completed cavities**
**  ****An automated tuning machine (DESY**
**   ****design) is planned for FY08**

## ILC R&D at FermilabH. Carter

**   **_**SCRF Materials R&D**_
** ****Niobium Material**
** ****RRR measurements**
** ****Eddy current scanning**
** ****Surface profilometry**
** ****Microhardness testing**
** ****Mechanical properties (warm and cold)**
** ****Alternate niobium material**
** ****Large grain and single crystal materials**
** ****Formability**
** ****Weldability**

**                       **_**Cavity HPR Systems**_
**  ****Existing A0 System for single cell 1.3GHz and**
**   ****9-cell 3.9GHz cavity rinsing**
**  ****Single cell and nine-cell 1.3GHz system (based on **
**   ****the Cornell HPR design) under development and **
**   ****planned to be operational at ANL in early CY08**
**  ****State-of-the-art system design under consideration**
**and planned for acquisition and installation at **
**FNAL in FY09**

**                     **_**Industrial Development**_
** ****Continued development of US. Vendors in FY08-09 **
**   ****in the areas of:**
**Cavity fabrication (both single and 9-cell)**
**Helium vessel fabrication**
**Cavity processing (EP and BCP)**
**Power coupler fabrication**
**Vacuum vessel and cold mass manufacture**

**ILCTA_NML**

**         **_**Cavity and Cryomodule Processing  **_
**                **_**and Testing Infrastructure**_
** ****A next generation, pre-production processing facility **
**  ****capable of 100 process cycles/year is being designed**
** ****Design and construction expected to take 2 years **

_**Cavity Processing**_

**                 **_**Planned Facility Upgrades**_
**FNAL**
**VTS upgrade to three test pits**
**HTS upgrade to two units, one capable of **
**  ****simultaneous testing of two cavities or one**
**  ****cavity plus a quad **
**In FY09 start construction of a cryomodule test **
** ****stand patterned after the DESY test stand**
**ANL Processing Facility**
**Addition of PLC controls to EP**

**ILC R&D at Fermilab****H. Carter**

**CM-Related Functions:**
**     ****-****Receive cryomodule assembly from CAF-ICB**
**     ****-****Install cryomodule in NML test cave**
**     ****-****Operate cryomodule as part of the NML test accelerator**
**     ****-****Perform a complete RF unit test**