Targets Ta#50 and SiC#34 have been transferred from their old pails to new ones. Ta#50 was done on April 12th 2019 it was moved from pail #148 to pail #200 and a new field measurement was done and found to be 3.57mSv/hr. SiC#34 was done on April 18th 2019 it was moved from pail #143 to pail # 206 and a new field measurement was done and found to be 2.20mSv/hr. Both measurements were done by the RAM that is mounted at the south hot cell.

April 24 2019

Target Ta#46 has now been transferred to a new pail with a number 207 from pail 143 it was 3.62 mSv/hr when removed from the south hot cell.

April 25 2019

Target Ta#47 has now been transferred to a new pail with a number 201 from pail 137 it was 2.25mSv/hr when removed from the south hot cell. The bag that the target was in has shown signs of degradation.

Target Ta#45 has now been transferred to a new pail with a number 202 from pail 124 it was 1.45mSv/hr when removed from the south hot cell. The bag that the target was in was destroyed. Also in the pail was a shutter, IMG Gauge, some altem parts, wire and bolts.

The extraction electrode from Ta#47 was added to this pail as it was left behind from last transfer.

Broken handle cable of east manipulator has been replaced and manipulator is operational again.

Pail transfer was undertaken in the south hot cell. went very well except near the end the master tong cable of the right hand manipulator broke. Not entirely a surprise due to the amount of use it has seen lately.

• Drop test performed January 8, 2019 with 25 lb target, UN pail and lug cover. Drop failed. Lug cover half removed. Pictures and video in docushare collection 24626.
• Second test January8, 2019 UN pail, "new" dish cover, old lock lever ring, 25 lb target. Single drop from 1.2m onto latch, no sealant. No leaks 24 hours later. Pictures in docushare collection 24626

• Drop test performed April 2, 2019 repeat of previous test using until that was loaded in north hot cell test. Target punctured can. Pictures in docushare collection 24626.

• Drop test performed April 5, 2019 repeat of previous test with the addition of a aluminum sleeve (0.05" thick) inside the pail between pail and target.

New UN rated pail with 9.55 kg target, 1.2 kg 16 gauge Al sleeve (10.75 OD x 14.75" tall), 3 liters of water with red food coloring no sealant on gasket.

First drop standard drop test from 1.2m onto latch

Second drop test 1.2m onto bottom of pail

Third drop 1.2m onto side of pail

Drops 4-6 1.2m onto lid

Pail was left inverted for an hour after the first three drops with no leaks after 1 hour.

No leaks after the remaining 3 drops .Bottom very damaged suggesting need for protective disc in bottom of pail.

Pictures can be found in docushare Collection-24627

• Drop tests performed May 2, 2019 with 9.7 kg target, 1.346 kg of mixed module and target components, sleeve and disc. First drop on latch from 1.2m, no leak, second drop straight on bottom from 1.2m, no leak, third drop on side from 1.2m leak. Drop test described in more detail in document drop test witness document on docushare. Pictures and video in docushare collection 24626.

With the SMP vacuum vessel now installed inside the shield box, a test was performed to measure the torque required to rotate the vessel.  At a moment arm distance of 2.0m a force of 89N was required to rotate the vessel (with no module installed) resulting in a torque of 178Nm.  Based on this, the coefficient of rolling resistance (CRR) was calculated to be 0.007;  This is fairly close to available data for similar applications such as cast iron wheels on steel rail (https://en.wikipedia.org/wiki/Rolling_resistance).  The CRR used for design of the SMP drivetrain was 0.054 which was based on empirical data for a similar product.  Because this is significantly higher than the friction of the as-built system the drive-train components are stronger than required and should have no problem rotating the vessel when loaded with a module.

Further details and calculations included in the attached PDF.

 Last week drilling of the additional required holes in the SMP shield box was completed in the Target Hall.  This morning the shield box (IRH1675) was moved to its final installation position in the silo area on the B2 level.  The vacuum vessel (IRH1806) was then installed inside the shield box.  The center of the vacuum vessel is 2-3" north of the south travel limit of the crane.  Photos as well as measurements of the final position are attached below.

David Wang wrote:

Helium pressure test on TM2 all water circuits is done. 70 psi helium , 10 minutes test time. Leak detector :base leak rate 0.0XE-9 atm.cc/sec, base pressure 0.0Xe-4torr. No any response on LD during the test. All TM2 water circuit are leak free.

 Thursday, March 28, 2019, 12:40: Found valve to expansion tank TCS:TK2 to be closed. Opened valve. This allow air to escape out of the system and the water system is running as expected again

Friday, March 29, 2019, 11:15: Changed EE to conditioning mode

Friday, March 29, 2019, 11:35: BIAS / EZL 20 / 10 kV

Friday, March 29, 2019, 13:47: BIAS / EZL: 25 / 12.5 kV

Friday, March 29, 2019, 16:09: BIAS / EZL: 30  / 15 kV

Friday, March 29, 2019, 17:23: No sparks for >60 min

Friday, March 29, 2019, 17:26: BIAS / EZL off

Monday, April 01, 2019, 08:13: BIAS / EZL: 30  / 15 kV

Monday, April 01, 2019, 08:33 BIAS / EZL: 35  / 17.5 kV

Monday, April 01, 2019, 09:00: Sparking at about 37.5 kV BIAS. Lowered below 20 kV to stop. Now sparking at around 20 kV

Monday, April 01, 2019, 10:00: BIAS/EZL 22 / 20 kV. Occasional sparking on BIAS as voltage is increased.

Monday, April 01, 2019, 10:05: Change of strategy. Will heat target to bake out the vacuum before continuing with HV conditioning.

Monday, April 01, 2019, 10:43:

BIAS / EZL / EE: 15 / 7.5 / 1.5 kV
COIL / ANODE: 10 A / 200 V
Ramping TGHT / TBHT at 1 A/min. Good/bad vacuum (IG2): 1E-6 / 2E-6 Torr

Monday, April 01, 2019, 19:16: TGHT / TBHT: 500 / 270 A. Vacuum increasing. IG1/2 1.2E-7 / 1.4E-6 Torr

Monday, April 08, 2019, 09:28: BIAS / EZL: 20 / 10 kV (some periods of multiple sparks)

Monday, April 08, 2019, 10:28: BIAS / EZL: 30 / 15 kV (some periods of multiple sparks)

Monday, April 08, 2019, 11:24: 3 sparks for the last 60 min

Monday, April 08, 2019, 14:43: BIAS / EZ: 40 / 20 kV (after two periods of sparking around 39 kV requiring voltage to be reduced below 30 kV to recover)

Monday, April 08, 2019, 15:57: Two sparks in 70 min

Tuesday, April 09, 2019, 12:40: BIAS / EZL 40 / 20 kV with >90 min without sparking

Tuesday, April 09, 2019, 16:00: BIAS / EZL 48 / 24 kV

Tuesday, April 09, 2019, 16:07: Sparking tripped TPs and IG1S, then power supplies.

Tuesday, April 16, 2019, 16:41: BIAS / EZL 50 / 25 kV for 1 hour without sparking.

Wednesday, April 17, 2019, 15:23 : Continued without problems to 50 kV earlier, but sparks tripped off vacuum just above 50kV. Continue later.

Helium pressure test on TM2 all water circuits is done. 70 psi helium , 10 minutes test time. Leak detector :base leak rate 0.0XE-9 atm.cc/sec, base pressure 0.0Xe-4torr. No any response on LD during the test. All TM2 water circuit are leak free.

 The four electrical check done on TM#2 during the source tray change.

 Electrical Check of TM#2 with the dummy target attached.

 TM#2 with a new source tray and the dummy target has been moved from the south hot cell to the conditioning station.

Link to previous target information: https://elog.triumf.ca/TIS/RH-ISAC/1039

Monday, March 25, 2019, 10:00: Target electrical checks (See Attachment 1)

Tested for TM2 

This morning new water block fasteners and gas line capture nut fasteners were inserted into the hot cell. Window waterline blank off was removed from TM2, surfaces inspected and given a polish with Veltex (30 seconds, 70 psi) as there was a small bit of c seal residue. Transfer try with new source tray has been latched to the module.

 TM#2 has been moved from the conditioning station to the south hot cell.

 The TCS will be vented soon for TM2 move.

New seals with a blank off cap are installed on TM2 window line water block.   The seals are checked at TCS with 70 psi helium for 5 minutes with LD at 0.0xE-9atm/cc.sec. No response on LD during test. Seals are good.

 TM#2 has been moved from the south hot cell to the conditioning station.

Phase 2 (intermediate) and Phase 3 (Final) polishing is complete on all water blocks on TM2 (minus ground electrode circuit which has only had a cursory cleaning). Phase 2 with 2000 grit wet sand paper and isopropynol for 1 minute with tool at 75 psi, Phase 3 with Veltex polishing cloth for 1 minute with tool at 75 psi.

Stage 1 polish has been achieved on all single seal water blocks using the single pad tool run at 75 psi, 2 3 minute cycles per block using red scotch brite.

Stage 1 polishing (water scale and at least 99% of visual indium removed) has been achieved on all 2 seal water blocks that will be used (Ground electrode has not been polished). Process required 3-4 3minute cycles of the tool using scotch brite pads with the tool running at approximately 75 psi.