STF B.L.C. #4 second Vertical Test Summary Period : 2006/09/05~09/08 Contents : ▪ Q 0 -E acc 2K&4K ▪ Q 0 &E acc time 2K&4K ▪ Summary of RF Conditioning ▪ Experimental Log ▪ Sensor 2K&4K ▪ After the Vertical Test… ▪ About Inspection of Cavity Inside ▪ Summary 2006/09/15 Kirk

Q 0 -E acc 2K for this measurement π mode only ! 14.1MV/m

Q 0 -E acc 2K&4K for all measurements 7.0MV/m 17.1MV/m 16.3MV/m π mode only ! 6.8MV/m 14.1MV/m

Q 0 &E acc time 4K

Q 0 &E acc time 2K π 8π/9 7π/9 π 6π/9 5π/9 4π/9 π 3π/9 8π/9

Q 0 &E acc time 2K π 8π/9 7π/9 π 6π/9 5π/9 4π/9 3π/9 π

Summary of RF Conditioning dateTemp. [K]Total time [h:m]π mode only [h:m]Max. E acc [MV/m] 9/524:032: /624:171: /724:021: /840: /825: ~10:00 (π mode

Experimental 2006/09/04 9/04 16:40Cavity installation into the cryostat 17:00~Vacuum evacuation for the cryostat 17:17Dewar valve open Cool down start 21:05Cavity temp. 3.9K

Experimental 2006/09/05 9/05 10:401000ℓ dewar exchange 11:10Pass-band measurement 12:20cable correction 14:27calibration for RF diode :30standard data 4.2K (over-coupled) f 0 = [MHz], τ=28.8[msec] :34standard data 4.2K (under-coupled) f 0 = [MHz], τ=29.6[msec] :41decompression start 15:10We found that the helium pressure data had been mistaken. 18:00decompression finish R s =14.26[nΩ] :082K Run start :21electron 8.1[MV/m] :32X-ray emission 11.0[MV/m] 14.0[MV/m] ⇒ self-pulse mode 14.1[MV/m] ⇒ self-pulse mode 14.1[MV/m] ⇒ self-pulse mode :32Mode change (π ⇒ 8π/9 mode, f 0 = [MHz]) 16.0[MV/m] ⇒ self-pulse mode 20:22Mode change (8π/9 ⇒ π mode, f 0 = [MHz]) 14.1[MV/m] :28self-pulse mode 21:01Mode change (π ⇒ 4π/9 mode, f 0 = [MHz]) 9.1[MV/m] 9.9[MV/m]

Experimental 2006/09/05 (cont.) 9/05 21:44Mode change (4π/9 ⇒ 3π/9 mode, f 0 = [MHz]) 10.1[MV/m] 12.1[MV/m] 12.4[MV/m] ⇒ self-pulse mode 22:11Test was finished

Experimental 2006/09/06 9/06 9:43He transfer start 10:52He transfer stop 11:08decompression start 16:45RF Amp. On Set the concrete shielding 17:002K Run start 13.0[MV/m] 18:50Mode change (π ⇒ 4π/9 mode, f 0 = [MHz]) self-pulse mode 19:13Mode change (4π/9 ⇒ 7π/9 mode, f 0 = [MHz]) 14.1[MV/m] 15.2[MV/m] 20:36Mode change (7π/9 ⇒ 6π/9 mode, f 0 = [MHz]) 14.3[MV/m] :48electron detected self-pulse mode :58Mode change (6π/9 ⇒ 5π/9 mode, f 0 = [MHz]) 21:00electron detected 12.1[MV/m] 12.8[MV/m] self-pulse mode :17Mode change (5π/9 ⇒ 8π/9 mode, f 0 = [MHz]) self-pulse mode Test was finished

Experimental 2006/09/07 9/07 9:35Dewar exchanged 10:30He transfer start 12:00decompression start 15:10decompression stop :20RF On 2K Run start 14.0[MV/m] ⇒ self-pulse mode 16:00Mode change (π ⇒ 8π/9 mode, f 0 = [MHz]) 16.6[MV/m] ⇒ self-pulse mode :21Mode change (8π/9 ⇒ 7π/9 mode, f 0 = [MHz]) 15.2[MV/m] ⇒ self-pulse mode :50Mode change (7π/9 ⇒ 6π/9 mode, f 0 = [MHz]) 14.6[MV/m] ⇒ self-pulse mode 17:17Mode change (6π/9 ⇒ 5π/9 mode, f 0 = [MHz]) 12.6[MV/m] ⇒ self-pulse mode :48Mode change (5π/9 ⇒ 4π/9 mode, f 0 = [MHz]) 7.5[MV/m] ⇒ self-pulse mode 9.9[MV/m] ⇒ self-pulse mode 18:29Mode change (4π/9 ⇒ 3π/9 mode, f 0 = [MHz]) 12.4[MV/m] ⇒ self-pulse mode :59Mode change (3π/9 ⇒ π mode, f 0 = [MHz]) 14.0[MV/m] ⇒ self-pulse mode 19:28Test was finished

Experimental 2006/09/08 9/08 9:25He transfer start 10:18He transfer stop :30RF On :504K Run start 6.1[MV/m] 6.8[MV/m] 6.8[MV/m] RF Off decompression start 14:35decompression stop 15:092K Run start 14.0[MV/m] self-pulse mode 20:14Test was finished

Experimental 2006/09/09 9/09 9:35Warm-up start 12:52Warm-up finish

E pk per cell cellπ8π/97π/96π/95π/94π/93π/9 1 & & & & unit : [MV/m]

Sensor Position in this measurement Cell #4 HOM #1 tip weld

Heating detected by Carbon Resistor Around cells Cell #1 had the heating spot at 4K.

Heating detected by Carbon Resistor Around cells π 8π/9 7π/9 π 6π/9 5π/9 4π/9 3π/9

Heating detected by Carbon Resistor Around #4 cell π 8π/9 7π/9 π 6π/9 5π/9 4π/9 3π/9 Cell #4 APD 45mm

Heating detected by Carbon Resistor Around cells ππ