Logbook IFplate-Assembly-Mirca-JanFeb2018

Enter comments in reverse time order

Date	Who did it?	Action	Comments	Documents
2018-02-21	Taka, Tomo, Pepa	IF plate assembly & installation starts	We put LOCTITE on the bolts to fix actuator pins and the bolts to fix actuator rings for 16 plates (in total 141 plates). 4 boxes(16 plates) were transported to the site. Three plates were already installed to the telescope.
2018-02-20	Taka, Tomo, Pepa	IF plate assembly & packing	We put LOCTITE on the bolts to fix actuator pins and the bolts to fix actuator rings for 45 plates (in total 125 plates) and packed 40 plates(in total 26 boxes ready to transport).
2018-02-19	Taka, Tomo, Pepa	IF plate assembly & packing	We put LOCTITE on the bolts to fix actuator pins and the bolts to fix actuator rings for 24 plates (in total 80 plates) and packed 64 plates(16 boxes ready to transport). When we put LOCTITE on the bolts, we found 3 stripped bolts of actuators(threads of screw were broken) before we screwed. Those bolts are used for connection between an actuator(2-axis) itself and its ring.
2018-02-17	Taka, Satoshi, Tomo	IF plate assembly	We put LOCTITE on the bolts to fix actuator pins and the bolts to fix actuator rings for 24 plates (in total 56 plates).
2018-02-16	Taka, Satoshi, Tomo	IF plate assembly	We moved 20 racks of mirrors which will be installed on LST1 to the area close to a big entrance of Mirca. We put LOCTITE on the bolts to fix actuator pins and the bolts to fix actuator rings for 32 plates.
2018-02-15	Taka, Satoshi, Tomo	IF plate assembly	We checked the tightness of bolts to fix actuator rings, positions of small threaded pins, tightness of actuator caps and rotation angles of actuators. We assembled 2 IF plates close to the dish center which have only one actuator each.
2018-02-14	Taka, Satoshi, Tomo	IF plate assembly	We put actuator caps to 77 of the completed IF plates (in total 178). We discussed and fixed how to pack IF plates to a box.
2018-02-13	Taka, Satoshi, Tomo	IF plate assembly	We put actuator caps to 101 of the completed IF plates.
2018-02-09	Satoshi	CMOS camera settings	I adjusted iris and focus, put LOCTITE, labeled coordinates and configured IP addresses for 64 CMOS cameras (in total 144 cameras).
2018-02-08	Takayuki, Satoshi, Tomohiro	IF plate assembly & CMOS camera settings	We removed unnecessary tube spacers for all of the 12 specified IF plates. We also adjusted iris and focus, put LOCTITE to small screws fixing them, labeled coordinates and configured IP addresses for 80 CMOS cameras.
2018-02-07	Satoshi, Tomohiro	IF plate assembly	We attached LOCTITE on 85 IF plates. (in total 180 plates) We started to remove unnecessary tube spacers for some IF plates close to the dish edge, according to Robert's drawing.
2018-02-06	Satoshi, Tomohiro	IF plate assembly	We attached LOCTITE on 95 IF plates. (in total 100 plates)
2018-02-05	Satoshi	IF assembly	For 5 plates I attached LOCTITE to the nuts to fix fixed-point milling parts & small gaps between the milling parts and two big plates. It measured ~7 min/plate by one person.
2018-02-01	Masahiro, Daniel, Satoshi, Tomohiro	attachment of actuator caps and some discussions	We bought gris for O-ring of actuator tops. We discussed the preparation of AMC box installation and CMOS camera installation.
2018-01-31	Masahiro, Daniel, Satoshi, Tomohiro	unpacking shipments and some discussions	We unpacked deliveries from ICRR. They include actuator caps to attach to IF plates. We made discussions about LOCTITE for the fixed-point nuts of IF plates, the number of screws of actuator caps or CMOS holders, and so on.
2018-01-30	Satoshi	CMOS camera settings	I prepared for setups of CMOS cameras and finished 56 cameras.
2018-01-29	Satoshi	CMOS camera settings	I fixed the measures of iris and focus of the CMOS lens with orange LED 28 m away. I installed a software of IP address configuration for the cameras and tried with some cameras.
2018-01-26	Martin, Satoshi	IF plate assembly	We replaced wrong-positioned watertight belts with new ones and adjusted vertically the actuators which have >5 mm error (in total 8). We did the same adjustment to the actuators whose watertight belts were slipped off by mistake (in total 3).
2018-01-25	Martin, Satoshi	IF plate assembly	We tried to replace watertight belts of actuators with new ones from MAGIC experiment. Satoshi broke a new one while screwing. We learned how strongly we fix the belts.
2018-01-24	Koji, Satoshi, Tomohiro	IF plate labeling	We attached coordinate-labels on all the completed plates.
2018-01-23	Martin, Koji, Satoshi, Tomohiro	IF plate assembly	We finished attaching actuators to 42 plates. (in total 180 completed). We finished all the ordinary IF plates except the ones on edges.
2018-01-22	Martin, Koji, Satoshi, Tomohiro	IF plate assembly	We finished attaching actuators to 86 plates. (in total 138 completed).
2018-01-21	Koji, Satoshi, Tomohiro	IF plate assembly	We finished attaching actuators to 18 plates. (in total 52 completed) We stored completed IF plates so that their positions correspond to the ones in the dish structure of the telescope.
2018-01-19	Martin, Satoshi, Tomohiro	IF plate assembly	We confirmed how to adjust fixed points horizontally (with a caliper Martin bought today). We finished attaching actuators to 14 plates. (in total 34 completed) We cannot fix actuator covers as they have not arrived in Mirca yet. We also received all the threaded 700 pins we ordered last week.
2018-01-18	Martin, Satoshi, Tomohiro	IF plate assembly	We finished attaching tube spacers on 30 plates. (in total 20 completed & 160 tube spacer attached) We stopped attaching them as the total number reached 180, enough for ordinary IF plates.
2018-01-17	Martin, Satoshi, Tomohiro	IF plate assembly	We finished attaching tube spacers on 30 plates. (in total 20 completed & 130 tube spacer attached) Eduardo brought 150 threaded pins to Mirca.
2018-01-16	Martin, Satoshi, Tomohiro	IF plate assembly	We finished attaching tube spacers on 35 plates. (in total 20 completed & 100 tube spacer attached)
2018-01-15	Martin, Satoshi, Tomohiro	IF plate assembly	We finished attaching tube spacers on 36 plates. (in total 20 completed & 65 tube spacer attached)
2018-01-14	Satoshi, Tomohiro	IF plate assembly	We finished attaching tube spacers on 19 plates. (in total 20 completed & 29 tube spacer attached)
2018-01-12	Martin, Satoshi, Tomohiro	IF plate assembly	We completed 11 plates and finished attaching tube spacers on 10 plates. (in total 20 completed & 10 tube spacer attached)
2018-01-11	Martin, Satoshi, Tomohiro	preparation for IF plate assembly	We removed 351 unnecessary aluminum plates from actuators and 700 small pins to be threaded. We also confirmed how to assemble IF plates and completed 2 plates additionally (in total 9 completed).
2018-01-10	Satoshi, Tomohiro	arrival in La Palma

Trouble Shooting

- Some of actuators have watertight belts so far from their tops that IF plates cannot be adjusted to the right positions vertically. We found ~10 with ~5 mm displacement out of 180. We replaced the belts with new ones (Martin brought ones used for MAGIC).

- We put strong force and slipped off 2-3 watertight belts by mistake while adjusting actuators vertically. We also replaced them with new ones.

- 2018/02/07 : Beforehand Daniel took one IF plate by car to Roque and came back, and that plate had a threaded cylinder pin loosened. We have to specify if the loosening may come from vibration of the car or just forgetting tightening. We checked loosening of the pins for other plates and found (out of 180 plates) 3 with one missing pin, 1 with one loosened pin, 1 with one wrongly rotated pin and ~5 with one loosened bolt to fix pins.

- 2018/02/15 : We found ~10 errors for 180 IF plates. Some are that rotation angles of actuators are wrong and others are that pins are not sufficiently injected or not fixed enough. A few actuator caps and actuator rings are loosened.

- 2018/02/19 : When we put LOCTITE on the bolts, we found 3 stripped bolts of actuators(threads of screw were broken) before we screwed. Those bolts are used for connection between an actuator(2-axis) itself and its ring.

Tips

adjusting fixed points and actuators horizontally :

- When milling parts cannot move smoothly, you may have to loosen bolts fixing pentagonal spacers inside.

- We adjusted horizontal positions of fixed points with tail of a caliper.

adjusting actuator positions vertically :

- We adjusted vertical positions of actuators with a simple tool below.

- In case a watertight belt interferes, and 3-4 mm is enough to shift actuators farther, it is enough to cut the rubber sticking out.