| CDR RIDS |
Responsible: Effland |
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| RID 230 |
| Doc. Title | | Band 6 Cartridge Design Report | Originator: Hans Rudolf | Date: 2007-08-31 |
| Description: | | 7.1.2 Changes in Optics with temperature (Page 27): Does the compensation also include |
| changes of the ellipiticity due to thermal contraction? |
Suggested Solution: |
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| RID 1666 |
| Doc. Title | | Cross Polarization | Originator: Yutaro Sekimoto | Date: 2007-09-10 |
| Description: | | FEND-40.02.06.00-060-D-DSN, FEND-40.02.06.01-035-A-PRO, FEND-40.02.06.01-020-B- |
| PRO |
| |
| Cross polarization is higher than specification. Because the phase was measured as FEND- |
| 40.02.06.01-021-B-PRO, it can be converted to far field. It seems better to check |
| compliance for the new specification of [FEND-40.00.00.00-00226-00 / AT] "The |
| polarization efficiency of the tertiary optics system shall exceed 99.5 %" in ALMA- |
| 40.00.00.00-001-A-SPE. |
Suggested Solution: | | Comparison between simulation and measurement of optical components (horn, horn + |
| OMT, horn + Optics block) may be useful for solving this discrepancy. |
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| RID 1667 |
| Doc. Title | | Vacuum Requirement | Originator: Yutaro Sekimoto | Date: 2007-09-10 |
| Description: | | I can not find compliance status for outgassing requirements of TML and CVCM in vacuum |
| requirements ALMA-40.03.00.00-015-A-SPE. |
Suggested Solution: |
| *************************************************************************************** |
| RID 1671 |
| Doc. Title | | Interface Control Document between | Originator: Shin’ichiro Asayama | Date: 2007-09-10 |
| Front End Band 6 Cartridge and Front End |
| IF Switch |
| Description: | | IF specification should be defined with 4 GHz bandwidth (6 to 10 GHz). |
Suggested Solution: |
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