Tuesday meeting held on 10 th Oct, 2006: Dear Colleagues, The details of the magnets tested during the week 3-10-2006 to 9-10-2006 are as follows: Total 16 magnets were in this week, 5 magnets stripped off. 7 – Dipoles (2344 ROBTC), 7 - Arc SSS, ( 2 Nos under ROBTC, SSS354 and SSS355) 1 - 500 series ( SSS515 despite ROBTC but did not reach 12000 Amp in 2 quenches) 1 - 600 series (666 (125 hrs). Test coordinator: Gilbert. Equipment Support: Guy / Salem Following are the minutes in brief: 1) Nick mentioned about the poor performance of ARC SSS magnets like SSS 355,354 and 500 series magnet SSS-515. Magnet SSS515 did not perform well in 5 quenches. The bench D2 was again occupied for the repair of silver shoes, taking overall long bench time. SSS515 is put on standby now. 2) Considering the poor performance of the magnet SSS515, it was decided that the further tests carried out shall be discussed with the test coordinators, if the magnet do not obey the normal quench rules even in a thermal cycle. ROBTC was performed on 18-20 magnets. Since we do not have spare magnets of 500 series, the efforts needs to make for the acceptance of the magnet. Regarding the above matter Louis pointed out that the magnet acceptance authority will discuss over the NCs opened during the tests for above magnets and may over rule them (NCs) taking suitable decision. So it was suggested that for the balance 16 Nos of 500 series magnets, the test coordinator shall be contacted before proceeding further. 3) On bench TBD1 there was a CRYO OK was lost during MM. This problem has occurred third time between the ramping. It was explained that one cryo pump was auto tripped. The reason of the TRIP was not presently known, which shall be investigated by the cryo team. In general it was also indicated by Lionell that the OP shall not wait for a longer time once the temperature reaches 1.9 K since there is chance of pressure fluctuations, may be due to change of priority or subsequent cryo problems. 4) On bench TBC2 ( SSS339), there was a Q-loc and cryo, MRB side leak problem. Giorgio told that the ‘O’ rings were changed on yesterday night and the problem is solved. The further tests can be carried out now. The shafts will be installed on today evening. 5) Halik mentioned the magnets expected on B1 and D2 benches. These are SSS518,520, S4-662,675, 671and 679. He also indicated that some changes needs to be made on bench-D2. The magnets S4-671 and 679 will undergo CHACONSA measurement. 6) Guy and Giorgio will be on leave for next 2 weeks. 7) Stephane explained various problems occurred during the week ended. Some of them are as bellow: - Dipole magnet-1380 is going to come on bench-A for magnetic measurement. This magnet is with CORRECTORs. - There was AC-compensation problem on TBC2. One of the voltage tap was bad and hence this problem had occurred. -Shaft positioning was re done for magnet- 2178 and MM was repeated. -On the morning of 4-10-2006 water leak problem on TBD2 was reported in the log book, but after checking it was not observed. -There was problem in corrector powering for TBB2 (SSS354). This was due to pressure fluctuations on CFB.(cryo problem) - Faulty quench occurs due to bad clamp. In this case the test shall be repeated. -The wrong magnet name was appearing. For some SSS there is single collared coil. The name of the coil appears in the magnet name in this case. -On the magnet on TBF1 the temperature sensor was reading 283 K even the ambient temp was about 295 K that day. Salem explained that it was due to the reason that the magnet was outside and since outside temp is low now a days, it can happen so. The further tests were carried out. - No test could be carried out during 6-9 AM on 9-10-2006 due to the server problem (HWREC) That’s all was discussed in the meeting. Have a nice week ahead. Best Regards Niranjan Tayade