The spent SiC#36 has been moved from the south hot cell to the spent target vault.

After re zeroing alignment telescope to master jig and adjusted parts into place:

Orientation: X = Left -, Right+; Y = Up +, Down -

Front wire target

X = 0.000, Y = 0.000

Rear wire target

X = 0.000, Y = +.008" (high)

All fasteners torqued to specification, steerer housing and assembly not installed yet. Weight of steerer assembly might cause rear to sag into place. Otherwise may attempt to split difference between the front and rear elements (alignment is on an angle in the horizontal vertical plane.)

HS line is leak checked at SHC this afternoon by helium spay.  Leak detector base LR 0.0 XE-9atm.cc/sec. Base pressure 0.0Xe-4 torr. No leak has been found. This line will be helium pressured  at TCS. It had  a 1.7XE-7 atm.cc/sec leak rate on 70 psi helium at TCS  during last two target  checks.

 2017-08-03. Helium pressure test on TM2 HS line at TCS is done. 70psi helium, 3 minutes. base leak rate 0.0xE-7 atm.cc/sec. Result: 1.8XE-7atm.cc/sec leak which is almost same as before. This line has a very small leak on water block seal under helium pressure test  which we knew already. 

Tm2 was disconnected in ITW yesterday. ITW EL cable crimp ring was broken. John Chow replaced this ring this afternoon.

The electrical check of TM#2 with SiC#36 attached. Post beam at the south hot cell. See attached results allow the before beam electrical check results are posted here as well.

 TM#3 has been moved back to the NE silo from the conditioning station.

Conditioning continues today with resistors removed from the HV cable

Tuesday, July 18, 2017, 16:53: BIAS / EZL 50 / 25 kV - no sparks

 Tuesday, July 18, 2017, 16:56: BIAS / EZL 55 / 27.5 kV - one spark

TM3 remained at 55 kV over night. Turbo pumps tripped twice and was restarted and HV recovered by RIB ops. Last recovery brought EZL to 16 kV (not 27.5 kV)

About 25 sparks over 15 h. No sparks for the last 3 h

Wednesday, July 19, 2017, 08:12: EZL to 27.5 kV

Wednesday, July 19, 2017, 08:38: BIAS to 57 kV

Wednesday, July 19, 2017, 08:46: BIAS to 57.5 kV

Wednesday, July 19, 2017, 09:05: BIAS to 59 kV

Wednesday, July 19, 2017, 09:19: BIAS to 60 kV

Wednesday, July 19, 2017, 09:28: EZL to 30 kV

Wednesday, July 19, 2017, 12:25: Heavy sparking. Lowered BIAS to 30 kV

Wednesday, July 19, 2017, 12:37: Increased BIAS again towards 50 kV, but heavy sparking again between 45 and 50 kV. Lowered back to 30 kV

Wednesday, July 19, 2017, 12:40: BIAS at 46 kV

Wednesday, July 19, 2017, 12:42: BIAS at 47 kV

Wednesday, July 19, 2017, 12:44: BIAS at 48 kV

Wednesday, July 19, 2017, 12:48: BIAS at 50 kV

Wednesday, July 19, 2017, 14:50: BIAS at 55 kV after ~2h without sparking at 50 kV

Wednesday, July 19, 2017, 15:12: Sparking. Lowered to 40 kV

Wednesday, July 19, 2017, 16:39: BIAS at 55 kV

Friday, July 21, 2017

Observed top of module inside target hall during HV sparks using crane cameras. No sparks observed, but some faint sound could be heard. Module still sparks at 60 and 55 kV. Have to lower to 40 kV to stop sparking.

Friday, July 21, 2017, 13:25: BIAS / EZL at 50 / 25 kV for without sparking for the last 90 min

 Earlier in the day it was noted that the rotate function of the crane had creased operation. After David has finished the block moves. Don and I checked the Crane's control unit in the ISAC crane control room and found the breaker tripped for the rotation. The breaker was reset and the crane's rotation is now operational. If this occurs in the future only Travis Cave, Don Jackson or a TRIUMF Electrician are allowed in that control box as it is a 480Volt system. Don or I because we know what we are looking for and the Electrician because they are allowed to touch with and deal 480 V systems. 

Anders Mjos wrote:

50 kV stable with less than 1 spark/h during the weekend by RIB obs. Today 57 kV reached, but observed sparking on the resistors of the new HV cable. The cable will be removed to take out the resistors, before reinstalling it. The target hall was locked out, but has now been reopened. This was to avoid sparking to the HV cover.

 EL was brought to 27.5kV.

50 kV stable with less than 1 spark/h during the weekend by RIB obs.

Today 57 kV reached, but observed sparking on the resistors of the new HV cable. The cable will be removed to take out the resistors, before reinstalling it.

The target hall was locked out, but has now been reopened. This was to avoid sparking to the HV cover.

 TM#3 has been moved from the north east silo to the conditioning station.

The target hall has been locked-out as per Document-70039.

Forced IG1, IG1S and IG2 to switch on BIAS power supply

Wednesday, July 12, 2017, 11:53: 70 kV at 0.16 mA

2 sparks observed shortly after 70 kV was reached

Wednesday, July 12, 2017, 12:59: No sparks for the last hour.

BIAS power supply off. Forces removed.

 TM#4 with Ta#52 has been moved from the conditioning station to the east target station.

Prepare for TM4 move tomorrow morning.

A  hydraulic leak was found on the manipulator  install and repair cart, upon further investigation the cause was a faulty cylinder. Once the cylinder was removed and disassembled the inner bore was found to be scored beyond repair. Another point of interest was that the rod was painted to the point that when retracted it compromised the rod seal causing the cylinder to leak. attached are photos outlining the issues. new cylinders are being sourced and will be installed upon arrival. We have found that there is interaction between the tops of the cylinders and the bed of the cart when fully retracted and compressed, this might require some modifications to ensure proper operation in the future.

The NHC right side manipulator was evaluated today to check if operation was normal through all ranges of motion.  The manipulator was first moved through usual motions without the electric motion drives: the feel was fairly normal, a sound could be heard from the master side Z motion tapes rubbing on the sides of the pulleys, this problem had been identified a few weeks ago however it was significantly reduced since the master side upper and lower Z motion tapes were tensioned yesterday (using CRL repair manual)

The Y motion drive was then tested:  with the master arm close to the window we attempted to move the slave arm close to the slave side window using the Y motion drive; part way through travel the arm stopped moving and would not move any further towards the window.  At this point it was approximately 1 foot from the slave side window.  (I recall that when the manipulator was installed in the wall it was difficult to get the slave end fully horizontal, the arm would travel part way, then stop for seemingly no reason.  Eventually after multiple attempts I got it to reach the horizontal position)

The Z motion was then tested.  The slave end was moved to the fully extended position.  At this point when the Z drive was continued downwards the master side moved up.  Once it reached the upper limit the drive continued which caused the Z motion tape on the slave end to snap.  At this point testing was stopped.

Our plan is to assemble and test the left side manipulator after the manipulator handling cart repair is completed.  If the left side has the same problems it is likely a manufacturer defect.  If not, the problems with the right side may be due to a timing error introduced when we removed the slave end to fit the assembly and cart through the roof hatch from the ISAC-1 experimental hall.  In either case we plan to have  CRL technician come in to address the issues and tune-up both arms before use.

 Installation of new flow sensors and transmitters for the NHC and SHC duct lines was completed in the target hall today.  The sensors are Dwyer DS-300-8 in-line sensors for 8" pipe; The transmitters are Dwyer MS0121 magnesense differential transmitters with 4-20mA output.  The transmitters will be wired to the new PLC control system when the upgrade is done.

 John Chow configured TCS to cathode bias mode (IRH1538). The anode P/S is in positive mode.

 The spent UC#20 has been moved from the south hot cell to the spent target vault. It was placed in pail #150 and spot 1B in the vault. See attached for details of the vault.

John Chow and I installed new TCS HV cable and feed through with their mounting panel back to TCS Faraday cage this Tuesday. ECO-4269 has been issued for the new cable feed through and mounting panel.