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.

 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. 

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

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. 

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.)

 Thursday, August 03, 2017, 17:08: Restarting vacuum and water system

 The NHC drain line was tested by pouring approximately 10 gallons of water through the drain grate at the base of the NHC partition wall.  Water was seen a few minutes later pouring into the sump labeled "ACTIVE SUMP" from the light coloured pipe on the west side of the inside of the sump.  Rob Walker had previously said that the hot cells drain into the sump next to this one which is labeled "SANITARY SUMP", which appears to be incorrect.

The ISAC active sump in the Active Service Room (#002 on B2 level) was pumped out yesterday using the standard procedure (Section 5.5.2 of the ISAC Operators' Manual, V1.0).  The procedure makes use of the auto stop feature of the pump-out system which stops when a low level float switch is triggered.  The water level was measured after pumping stopped, and was found to be approximately 21" above the base of the sump.  A new section of pipe will be added to the 4" drain line in the sump to move the drain opening below the low level water line so that air in the sump is not pulled into the drain network (which could end up in the NHC or TCS space).

 Roof blocks IRH1641, IRH1642, IRH1643, and IRH1644 have been fully assembled, labeled, and installed as per drawing IRH1652.  Fabrication of TCS shield block (IRH1646) and NHC module port block (IRH1645) is still in progress.

 The BIAS voltage was brought up to 70 kV today and held there for 1h. No sparking observed.

TM4 HS line leak checks are done, at SHC and TCS. SHC: Helium spray. TCS: Helium  pressurize 70psi.  LD base LR 0.0 X E-9 atm.cc/sec.  No leak has been found on both leak checks. 

TM4 has been connected at TCS. TCS water system has been started for TM4. TM4 and TCS vacuum pumping down is good so far.

Argon vent and disconnect TM4 at TCS.

TM3 is located at TCS and it is pumping down now. TCS water system has been started.  All TCS water lines for TM3 module internal cooling are bypassed and looped at TCS top ground plate. Water only supply to TCS high  current conductors.

Preparing vent the TCS/TM3. We will remove TM3 service tray cover plate  after venting.

TM3 service tray cover plate has been removed. It is bagged and placed to TH b2 level south wall beside the silo.

TCS and TM3 all vacuum pumps are started. Everything is fine.

Entered hot cell to preform replacement of slave tong cable. Existing cable shows no signs of wear so it has been re-installed. A spare tong cable has been loaded into a spare tong while in the hot cell in preparation for next time this cable needs to be replaced.

Broken insulators ITD0053 and ITD0054 have been uninstalled from TM2.

Insulators ITD0053 and 54 have been replaced. All fasteners torqued to 56 in lbs.