This courtroom sketch depicts Attorney Brenda G. Bryn, far right, speaking in front of from l-r, Associate Justice Samuel Alito Jr., Associate Justice Elena Kagan and Associate Justice Brett Kavanaugh, at the Supreme Court in Washington, Tuesday, Oct. 9, 2018. (Dana Verkouteren via AP)
This courtroom sketch depicts Attorney Brenda G. Bryn, far right, speaking in front of from l-r, Associate Justice Samuel Alito Jr., Associate Justice Elena Kagan and Associate Justice Brett Kavanaugh, at the Supreme Court in Washington, Tuesday, Oct. 9, 2018. (Dana Verkouteren via AP) Credit: Dana Verkouteren

Brett Kavanaugh took the bench with his new Supreme Court colleagues for the first time Tuesday in a jovial atmosphere that was at odds with the tension and rancor surrounding his confirmation.

The new justice dived into his new job, asking a handful of questions in the first arguments of the day following a traditional welcome from Chief Justice John Roberts, who wished Kavanaugh โ€œa long and happy career in our common calling.โ€

Kavanaugh took his seat at the end of the bench to Robertsโ€™s far left, a visible manifestation of a moment that Republicans have dreamed of for decades, with five solidly conservative justices on the court, and Democrats have dreaded.

His path to confirmation was turbulent โ€“ opposition intensified after Christine Blasey Ford accused him of sexually assaulting her decades ago, when they were teenagers. Kavanaugh denied it.

In court, Kavanaugh asked questions of both sides in arguments over increased prison sentences for repeat offenders. He jumped in with his first question after most of the other justices had spoken.

Questions from Kavanaugh and Justice Neil Gorsuch, President Donald Trumpโ€™s two high-court picks, suggested they could vote against the Trump administration and side with a criminal defendant from Florida who is fighting an increase in his sentence from just over six years to possibly more than 15 years.

As Gorsuch did in his first arguments last year, Kavanaugh focused heavily on the importance of following earlier decisions of the court. Both men testified about their respect for Supreme Court precedent, though Gorsuch already has been in the majority to overrule four high-court rulings.

Referring to a 2010 decision known as Curtis Johnson, Kavanaugh asked Justice Department lawyer Frederick Liu what the court should do โ€œif weโ€™re trying to follow Curtis Johnson strictly?โ€

There were no disruptions in the courtroom, and the justices laughed at one anotherโ€™s jokes. Justice Sonia Sotomayor even appeared to playfully pinch Gorsuchโ€™s arm as she asked a question about the kind of physical force necessary to have a crime be treated as violent under a federal enhanced sentencing law.

When the session came to an end, Kavanaugh shook hands with his new seatmate, Justice Elena Kagan. They also chatted privately before the arguments began. From time to time, Kavanaugh put on reading glasses to glance at papers in front of him.

Kavanaughโ€™s wife and two daughters were in seats reserved for justicesโ€™ guests, along with retired Justice Anthony Kennedy. Kavanaugh replaced Kennedy on the bench.

There was a long line of people hoping to see Kavanaughโ€™s first appearance. Police put up barricades in front of the court, but there were few protesters in the early morning.

Those who were there held signs saying โ€œWe will not forgetโ€ and โ€œWe do not consent,โ€ following the acrimonious fight that culminated in Kavanaughโ€™s 50-48 Senate confirmation Saturday.

Kennedyโ€™s presence in the courtroom underscored the changing of the guard on the bench. Kennedy was a more moderate conservative who sometimes sided with the courtโ€™s four liberal justices. Kavanaugh, in contrast, is expected to be a more decidedly conservative vote, tilting the court right for decades and leaving Roberts as the justice closest to the ideological middle.

Republicans had hoped to confirm Kavanaugh by Oct. 1, the start of the new term. Instead, the former D.C. Circuit judge missed the first week of arguments as the Senate considered an allegation that he had sexually assaulted a woman in high school.

Kavanaugh has had busy days since he was confirmed Saturday. That evening, he took his oaths of office in a private ceremony at the Supreme Court while protesters chanted outside the court building.

And on Monday evening he was the guest of honor at a ceremonial swearing-in at the White House.